MERCURY AND AIR POLLUTION: A BIBLIOGRAPHY WITH ABSTRACTS U.S. ENVIRONMENTAL PROTECTION AGENCY ------- MERCURY AND AIR POLLUTION: A BIBLIOGRAPHY WITH ABSTRACTS Air Pollution Technical Information Center ENVIRONMENTAL PROTECTION AGENCY Office of Air Programs Research Triangle Park, North Carolina October 1972 ------- The AP series of reports is published by the Technical Publications Branch of the Informa- tional Services Division of the Office of Administration for the Office of Air Programs, Environmental Protection Agency, to report the results of scientific and engineering studies , and information of general interest in the field of air pollution. Information reported in this series includes coverage of intramural activities and of cooperative studies con- ducted in conjunction with state and local agencies, research institutes, and industrial organizations. Copies of AP reports are available free of charge to Federal employees, current contractors and grantees, and nonprofit organizations - as supplies permit - from the Air Pollution Technical Information Center, Environmental Protection Agency, Research Triangle Park, North Carolina 27711 or for the cost indicated on the title page from the Superintendent of Documents. Office of Air Programs Publication No. AP-114 For sale by the Superintendent ol Documents, U.S. Government Printing Office, Washington, D.C. 20402 ------- CONTENTS INTRODUCTION ANNOTATED BIBLIOGRAPHY A. Emission Sources 1 B. Control Methods 6 C. Measurement Methods 9 D. Air Quality Measurements 19 E. Atmospheric Interaction 22 F. Basic Science and Technology 24 G. Effects - Human Health 26 H. Effects - Plants and Livestock 40 I. Effects Materials (None) J. Effects - Economic (None) K. Standards and Criteria 44 L. Legal and Administrative 46 M. Social Aspects 48 N. General (None) AUTHOR INDEX 49 SUBJECT INDEX 51 ------- MERCURY AND AIR POLLUTION: A BIBLIOGRAPHY WITH ABSTRACTS INTRODUCTION The Air Pollution Technical Information Center (APTIC) of the Office of Air Programs has selected and compiled this bibliography of abstracts on mercury and air pollution. The abstracted documents are thought to be representative of available literature, and no claim is made to all-inclusiveness. The abstracts are arranged within the categories listed in the Contents. Within each category, they are arranged in ascending order by APTIC accession number. Generally, higher numbers, representing later accessions, have been assigned to more recent docu- ments. Subject and author indexes refer to the abstracts by category letter and accession number. The author index lists all authors individually. Primary authorship is indicated by an asterisk (*). All documents abstracted herein are currently on file at the Air Pollution Technical Information Center, Environmental Protection Agency, Research Triangle Park, North Carolina 27711. Readers outside the Environmental Protection Agency may seek duplicates of the documents directly from libraries, publishers, or authors. ------- A. EMISSION SOURCES 06351 R. F. Abernathy and F. H. Gibson RARE ELEMENTS IN COAL. (Bureau of Mines, Washington, D.C.) (Information Circular 8163). (1963). 73 pp. Data are presented showing trends in the content of chlorine, phosphorus, titanium, and manganese although these elements are not included in the category of rare and uncommon ele- ments hi coal. It is suggested that elements may be called rare when the amount in the earth's crust is not much greater than 0.01 percent. By uncommon is meant unusual concentrations of elements greater than normally occur in the mineral matter of coal. The occurrence of 34 elements in coal is reviewed. These do not include the elements silicon, aluminum, iron, cal- cium, magnesium, sodium, potassium, and sulfur, which con- stitute the main part of the mineral matter hi most coals. Some of the rare elements found in coal probably were derived from the original coal-forming plant material. Elements occuring in sufficient concentration to be detected as minerals usually are considered as extraneous substances deposited in coal beds from external sources. Three main stages of the enrichment of elements in coal are suggested: (1) Concentration during the life of the plants; (2) concentration during decay of the plants; and (3) concentration during mineralization of the coal. There are three hundred eighty (380) references. 06909 I. M. Trakhtenberg K. I. Luchina 'MERCURY DANGER' AND ITS PREVENTION IN SECON- DARY SCHOOLS. ('Rtutnaya opasnost" i ee profilaktika v usloviyakh obshcheobrazovatel'nykh shkol.) Hyg. Sank. (Gi- giena i Sanit.) 30 (12), 411-4 (Dec. 1965) Russ. (Tr.) The potential dangers and means of preventing micromercuri- alism in secondary schools were discussed. In the last 10 years, health workers hi different cities have reported facts in- dicating the potential danger of micromercurialism in standard secondary schools. Contamination with mercury vapor was de- tected in several physics rooms at schools as well as in the laboratories attached to them. Mercury contamination is possi- ble also in chemistry rooms. We sampled and analyzed for mercury 626 air samples and 342 samples of different building materials taken from several schools. The principal source of air pollution with mercury in chemistry rooms was found to be the mercury vapor liberated during the demonstrations of the decomposition of mercuric oxide and of metallic mercury as an example of a liquid metal. The dissociation of HgO to metallic mercury and oxygen takes place at a high tempera- ture, thus facilitating the intensive evaporation of mercury and the liberation of large amounts of its vapor into the air. The laboratories often keep compounds that are not on the stan- dard lists, including mercury nitrate which liberates mercury vapor even at ordinary temperatures. 08489 Korshun, M. N. PREVENTION OF AIR POLLUTION WITH MERCURY IN- SIDE INDUSTRIAL PREMISES OF SYNTHETIC FIBER COMBINES. ((0 preduprezhdenii zagryazneniya rtutyu voz- dukha pomeshchenii kombinatov iskusstvennogo volokna.)) Text in Russian. Gigjena Truda i Prof. Zabolevaniya (Moscow), 10(ll):18-22, Nov. 1966. lOrefs. Mercury vapor concentrations in the chemical department of a synthetic fiber combine were determined. A source of the vapors appears to be the mercury present in the alkali which is produced by electrolysis of salt, using mercury electrodes. Factors contributing to air pollution include the high tempera- ture of the alkali, the operating procedures, and equipment which does not comply with sanitary regulations. The chemical department of a synthetic silk industry is included in the category of plants which are deemed harmful due to the presence of mercury vapors. Health recommendations aimed at improvement of working conditions are given. (Author's summary, modified) 12422 Lutz, G. A., S. B. Gross, J. B. Boatman, P. J. Moore, R. L. Darby, W. H. Veazie, and F. A. Butrico DESIGN OF AN OVERVIEW SYSTEM FOR EVALUATING THE PUBLIC-HEALTH HAZARDS OF CHEMICALS IN THE ENVIRONMENT. VOLUME I. TEST-CASE STUDDJS. (FINAL REPORT). Battelle Memorial Inst., Columbus, Ohio, Colum- bus Labs., Contract PH-86-66-165,146p., July 1967. 203 refs. Potential environmental health hazards due to the utilization of mercury, nickel, vanadium, fluorocarbons, and the chemicals used by the pulp and paper industry were reviewed. Pertinent information was identified and selected by examining ap- propriate subject indexes of journals, abstracts, and current periodicals. The combined activities of collection and evalua- tion were directed specifically toward the following interpreta- tions: current status of environmental contamination by each of the five contaminants, current status of environment-related medical knowledge of the effects of the contaminant, technological changes likely to lead to the entrance of new contaminants of the selected types, demographic-related changes that would affect the degree of population exposure to the contaminants, and deficiencies in the available informa- tion. The studies revealed potentially hazardous situations. Mercury showed a substantial increase hi the amount used in the electrolytic production of chlorine. There also exists a lack of fundamental information on national levels of mercury in air, water, and food. The vanadium study showed a signifi- cantly increased usage of volatile compounds in industrial ap- plications. The nickel study raised the question of possible chronic effects of small quantities of nickel hi food from the use of large quantities of nickel equipment in food processing. A need was demonstrated for the establishment of the en- vironmental fate of fluorocarbons used hi aerosols and refrigerants. A review of information on chemical processes employed by the pulp and paper industry demonstrated the need for surveillance of the atmospheric pollutants resulting from increased use of kraft pulping operations. Economics in- formation and die toxicity of the five contaminants were discussed in detail. ------- MERCURY AND AIR POLLUTION 14286 Pakter, M. K., D. P. Dubrovskaya, A. V. Pershin, and G. K. Talalaev MERCURY IN CARBONIZATION BY-PRODUCTS. Coke Chem. (USSR) (English transl.), no. 11:41-44,1968. 7 refs. The mercury content of various carbonization products from Soviet coke and Chemical works was checked. Mercury was present in the precipitates from tar and tar liquor, predominately in the form of sulfides. The tar contained ap- proximately 40% of the mercuric sulfide. When the tar was rectified, about 40% of the mercury was released in metallic form. Under appropriate cooling conditions, it is liberated in the condensing apparatus. The remainder of the tar mercury contained mainly anthracene, oil, and pitch. Nearly all the mercury was distilled off when hard pitch was produced. It was established that mercury collects in significant quantities only in coal tar, in certain precipitates, and in sulfuric acid tar. (Author conclusions modified) 17624 Melekhina, V. P. DATA RELATED TO SANITARY CLEARANCE ZONE SUR- ROUNDING THE KLINSK THERMOMETER PLANT. U.S.S.R. Literature on Air Pollution and Related Occupational Diseases, vol. 8:184-187, 1963. (B. S. Levine, ed.) CFSTI: 63- 11570 The safety of a sanitary protection zone 100 m wide around a mercury thermometer plant was investigated. Mercury vapor in the air was determined microcolorimetrically. One hundred and seventy three samples were collected with an aspirator on the lee side of the plant of 100,250, 500, 1000,1500, 2000, and 3000 m. All atmospheric air samples collected at points up to 2000 m from the plant contained mercury vapor in concentra- tions exceeding the allowable concentration limit. The high at- mospheric air mercury vapor concentrations penetrated into living quarters and into the soil. The analyses pointed to a general gross environmental mercury vapor pollution caused by the mercury vapor discharged into the atmospheric air by the thermometer plant. It was concluded that the sanitary clearance zone should be widened and apparatus be installed in the plant for the purification of emissions prior to discharge into the air. 21751 Stahl, Quade R. PRELIMINARY AIR POLLUTION SURVEY OF MERCURY AND ITS COMPOUNDS. A LITERATURE REVIEW. Litton Systems, Inc., Silver Spring, Md., Environmental Systems Div. Contract PH 22-68-25, NAPCA Pub. APTD 69-40, 96p., Oct. 1969. 243 refs. CFSTI: PB 188074 The effects, sources, abatement, and methods of analysis are reviewed for pollution due to mercury and its compounds. Sig- nificant sources appear to be the mining and refining of mer- cury and the use of mercury in industrial and scientific labora- tory applications. Russian experiments with animals indicate that continuous exposure to mercury vapor above 0.3 micro- grams/cu m of air may present a health hazard. Mild symp- toms of mercury intoxication are psychopathological in nature and thus can present serious problems in diagnosing the cause. Recent air measurements of participates in New York indicate that the mercury concentration of indoor samples is as high as 40 micrograms/cu m, or several times higher than that found safe in animal experiments using mercury vapor. Some organic mercury compounds, particularly the alkyl derivatives, are much more toxic than elemental mercury or the inorganic compounds. Portable continuous monitoring detectors, battery- operated vapor detectors, absorption techniques, radiochemi- cal methods, and colorimetry are some of the approaches available to detect mercury vapor. Mercury can be removed by use of water scrubbers, a pyrolusite absorber, sweeping with special vacuum cleaners, and chemical treatment. (Author abstract modified) 23561 Morgan, George B. and Guntis Ozolins THE IMPACT OF AIR POLLUTION ON THE ENVIRON- MENT. Preprint, National Air Pollution Control Administra- tion, Cincinnati, Ohio, Div. of Air Quality and Emission Data, 12p., 1970. The population of a large part of the world has been exposed to polluted air for many decades and, in some cases, centuries. Significant increases are forecast for the future. If control ac- tions are not intensified, air pollution may increase by a factor of six to ten by the year 2000. Before any meaningful control efforts can be carried out, we must know what the ambient levels of pollution are and how they relate to levels established as causing health or economic effects. Many pollutants have always been a part of the natural atmosphere. They are now called pollutants because, with man's help, they are now ex- cessive in quantity. Particulate pollution is the most recognized and pervasive. Its health effects are functions of both particle size and composition. Another significant effect is that, suspended in the atmosphere, particulates reflect away part of the sun's energy and could result in an over-all lowering of the earth's temperature. Gases, 90% of all pollutants, are the second class of pollutant. Examples are sulfur dioxide, nitric oxide, nitrogen dioxide, carbon monoxide, and hydrogen fluoride. A third major pollutant class is the family of hydrocarbons. These participate in photochemical reactions which result in the formation of secondary pollutants such as peroxyacyl nitrates, ozone, formaldehyde, other aldehydes, and ketones. It is from these secondary pollutants that the pri- mary danger to both animal (including the human animal) and vegetable life arises. Numerous industrial processes and the ubiquitous automobile emit these assorted products that are a serious problem in the environment surrounding their source. Almost all human activity results in some form of air pollu- tion, direct or indirect, particulate or gaseous. High-tempera- ture combustion, automotive, industrial, and domestic, is the principal offender. Parameters that must be considered when evaluating effects of pollution include quantity, distribution, and environmental tolerance for pollutants, individually and in concert. Locally, micrometeorology and topography also require consideration. Of all identified pollutants, suspended particulates and sulfur dioxide have been the most extensively measured and studied. As analytical techniques become availa- ble, other pollutants will come under programmed surveillance. Among these are asbestos, mercury, lead, pesticides, fluorides, and biologically active metals. International assess- ment of these problems is necessary for the preservation of the biosphere. 27081 McCarthy, J. H., Jr., J. L. Meuschke, W. H. Ficklin, and R. E. Learned MERCURY IN THE ATMOSPHERE. In: Mercury in the En- vironment. Geological Survey, Washington, D. C., Profess. Paper 713, p. 37-39, 1970. 7 refs. The abundance of mercury in the earth's crust is estimated to be about 60 ppb, and the abundance of mercury in soils is esti- mated to be about 100 pb. Mercury in the atmosphere is derived from surface rocks and solids and from continuing ------- A. EMISSION SOURCES hypogene and supergene processes. In general, the maximum mercury concentration is found in areas over mercury mines, lower concentrations over base and precious metal mines, and still lower concentrations over porphyry copper mines. The concentration of mercury in air over nonmineralized areas ranged from 3 to 9 ng/cu m. Mercury concentration in air as a function of altitude is shown graphically. A seasonal variation is ascribed to seasonal temperature differences, while daily variations result from changes in barometric pressure. Lesser concentrations of mercury are found in air over the ocean. 29643 Grant, Neville MERCURY IN MAN. Environment, 13(4):2-15, May 1971. 29 refs. Perhaps the largest quantities of mercury added to the en- vironment by man are released with the burning of natural fuels. From available evidence it appears that TJ. S. coal may average between 0.5 and 3.3 ppm mercury; at present rates of coal consumption, between 275 and 1800 tons of mercury are probably being released to the air annually. The extraction and use of mercury itself is a substantial source of pollution. Ac- cording to one estimate, mining, smelting, and refining opera- tions released 170,000 pounds of mercury into the enviomment in 1965. Agricultural uses of mercury, although small com- pared to the total, are of concern because of their immediacy to man. Mercurial fungicides may enter the food chain in a variety of ways. Most recent concern over mercury has been focused on water pollution and the resultant contamination of fish. The conversion of inorganic mercury to organic by microorganisms has been shown. The two general classes of mercury compounds-organic and inorganic-differ greatly in the extent to which they are absorbed by the body and the degree of damage they may do, once absorbed. Methyl mercu- ry is far more readily absorbed, and much more slowly excreted, than inorganic compounds. Mercury compounds have been shown to cause breakage and abnormal chromosome division in concentrations lower than any other known substance-as low as 0.05 ppm. The derangement of chromosomes by mercury probably depends on its interaction with sulfhydryl groups essential for normal spindle formation that directs an equal division of chromosomes into each newly formed cell. Other toxic effects of mercury are indicated as well as the behavior of mercury in the body. Levels of expo- sure are cited. An intake of not more than 0.03 milligram methyl mercury per day has been recommended. 29787 Eda, Shizuo, Hiroshi Ito, Hiroshi Hikichi, Sadakichi, Ejiri, Shigeo Nagayama, and Kaoru Nishiyama INVESTIGATION OF HEAVY METAL POLLUTION IN IWAKI CITY. (Iwaki shi ni okeru jukinzoku osen chosa). Text in Japanese. Kogai to Taisaku (J. Pollution Control), 7(4):317-324, April 1971.15 refs. There are pollution problems of sulfur dioxide, heavy metals, dust, hydrogen sulfide, cyanide, mercury, and cadmium, in the Onahama industrial area. Analyses of the soil, paddy field rice, cadmium, copper, zinc, lead, and other heavy metals. Results showed that there is typical heavy metal pollution of the air which is carried by the wind. There is no need to worry about pollution of paddy fields, upland fields, and soils by fac- tory effluents. Cadmium pollution of the soil exceeding 1 ppm is seen in only a few spots, and is considerably lower than Bandai Town, Fukushima Prefecture. A Pollution Prevention Agreement was imposed. The enterprises must comply with smoke emission standards and environmental standards and adjust their operation in accordance with meteorological condi- tions. 30017 Joensuu, Oiva, I. FOSSIL FUELS AS A SOURCE OF MERCURY POLLUTION. Science, 172(3987):1027-1028, June 4, 1971.10 refs. One suspected source of environmental mercury pollution is mercury-containing fungicides used in treatment of grain seeds. However, the amounts used are much too small to ex- plain high mercury contents in wildlife. A large part of the mercury found in the environment is derived from industrially produced mercury, approximately 10,000 tons/yr, most of which is discarded in waste streams. Another possible source could be fossil fuels and ores. Although the concentration of mercury in fuels is small, they are consumed at an enormous rate and must be considered as a possibly significant source of mercury release. The amount of mercury in coal is not well known. To obtain a preliminary value, 36 American coals were analyzed by a mercury vapor detector. It was concluded that 3000 tons of mercury/yr are released to the environment by the burning of coal. The upper limit of mercury released by weathering is 230 tons/yr. Detailed studies are needed to deter- mine the distribution of mercury near power plants and other users of coal. 30292 Goeij, J. J. M. de and J. P. W. Houtman MERCURY IN THE ENVIRONMENT. (Kwik in het milieu). Text in Dutch. Chem. Weekblad., 67(10):13-20, March 5, 1971. 62 refs. Studies using neutron activation analysis show the average mercury content of the lithosphere to be about 0.07 ppm. The erosion of rocks and soil containing mercury liberates about 2.5 million kg of mercury annually into the biosphere. The present mercury content of ocean water is 0.15 ppb. Total production of mercury has been estimated at about 10 million kg per year. Mercury used in thermometers and electrical equipment does not usually need replenishing. Mercury used in various chemical and metallurgical processes is partially lost to the environment, while mercury used for pesticides, batteries, paints, lubricants explosives, and fireworks is consumed beyond recovery. The literature on mercury pollution in Japan, Sweden, Canada, and the United States is reviewed, and original data are given from Dutch investigations. Certain in- dustrial processes, such as the roasting of ores, can release mercury into the air. Some combustible materials, such as paper and textiles, contain fungicides with mercury content; it is also present in coal as a level of 0.4 ppm. Petroleum has been known to contain as much as 20 ppm and tobacco as much as 0.4 ppm. Mercury in the Toronto atmosphere was found at concentrations of 0.14 and 0.35 mg/cu m in 1962; eight years later the levels were 0.25 and 0.75. A San Fran- cisco study revealed that the mercury content of the at- mosphere is strongly dependent on meteorological conditions. When the wind blew in from the ocean, a minimum of 1 mg/cu m was recorded. With a northerly wind in winter, values reached 15 and 25 mg, while in summer, when influenced by the industrial area of San Francisco, values reached 50 mg. Especially high values of mercury have been noted in conjunc- tion with the occurrence of smog. The pollution of food with mercury and the direction of future research in technology and biomedicine are also discussed. ------- MERCURY AND AIR POLLUTION 30457 Ruch, R. R., Harold J. Gluskoter, and E. Joyce Kennedy MERCURY CONTENT OF ILLINOIS COALS. Illinois State Geol. Surv., Environ. Geol. Notes, no. 43:1-15, Feb. 1971. 7 refs. A neutron activation method with a sensitivity of 0.01 ppm and a precision of + or - 20% was used for the determination of mercury in coal. Fifty-five raw coal samples from 10 coal seams in Illinois had a mean mercury concentration of 0.18 ppm and a mode between 0.10 ppm and 0.12 ppm. Eleven coal samples from other states had mercury concentrations within the same range, or slightly lower. Three coal samples were in- dividually separated into specific gravity fractions in the laboratory; all exhibited a mercury reduction of at least 50% in the lightest coal fraction and a concentration of mercury in the heaviest fraction. A significant part of the mercury was as- sociated with the pyrite in the coal, and the remainder (per- haps up to 50%) was in organic association. 31313 Ullmann, William W. HEAVY METALS IN THE CONNECTICUT ENVIRONMENT. Assoc. Food Drug Offic U. S. Quart. Bull., 35(3):147-152, July 1971. (Presented at the New England Association of Food and Drug Officials, Winter Meeting, Windsor, Conn., Feb. 4, 1971.) Connecticut s involvement with the prevention of lead poison- ing originated in the 1930 s with a program aimed at protecting occupationally exposed workers. Industrial air samples from areas where lead is used in manufacturing processes were periodically collected and analyzed, and urine and blood analyses were performed by industry on all workers who may have been exposed. Once a worker s blood lead level has reached 0.08 mg/100 cc, he is removed from the job to a func- tion not involving lead until the level has returned to 0.07 mg/100 cc or less. Fatalities in Connecticut due to lead poison- ing totaled 14 in the ten-year period from 1959 through 1968. Many more victims certainly were afflicted with non-fatal symptoms including mental retardation, damage to the central nervous system, convulsions, and anemia. As a result of the awareness of the critical problem of lead poisoning, a Gover- nor s Task Force was commissioned in 1969 and has been ac- tive in reviewing all aspects of the hazards associated with lead-based paints and in developing recommendations to help formulate preventive programs. Lead poisoning in children and screening programs are discussed. Sources of lead and its ab- sorption in the body are mentioned. The problem of mercury in food is also cited. 31548 Bolker, Henry L OUT OF THE WOODS. Tech. Rev., 73(6):22-29, April 1971. Except for the recycled paper which yields a product for only limited and uses, and the small amount of rags converted into special fine papers, most of the pulp and paper industry s raw material comes from trees. Both the mechanical and chemical methods for rendering wood into pulp are described. The kraft process and the acid-sulfite process are cited. Rendering wood into pulp, and then bleaching and processing the pulp into a suitable base for paper, cause the most serious waste problems in the papennaking process. One of the greatest errors of the paper industry was to use organo-mercury slimicdes in its mills to stop the growth of slimy molds on paper machines. The problems with fibers are also mentioned, but every new mill is now being equipped with facilities to remove solid and other wastes before water is returned to the land. Older mills are also acquiring suitable facilities-mainly in the form of large settling tanks where the water can be clarified and secondary aeration systems. Waste materials in true solution constitute a different problem. After separation of the pulp fibers, the spent liquor from a sulfite cook contains lignosulfonic acid, degraded carbohydrate polymers, and free sugars, as well as some residual bisulfite. 33004 Rancitelli, L. A. INORGANIC EMISSIONS FROM THE HANFORD STEAM PLANT. In: Pacific Northwest Laboratory Annual Report for 1970 to the USAEC Division of Biology and Medicine. Vol. II: Physical Sciences. Part 2. Radiological Sciences. Battelle Memorial Inst., Richland, Wash., Environmental and Life Sciences Div., p. 37-38, March 1971. NTIS: BNWL-1551, Part 2 An effort was made to establish the inorganic emissions of a Hanford steam plant by characterizing the trace element con- tent of coal and ash. Neutron activation analysis of 12 ele- ments in samples of coal and ash indicated that the chromium, iron, sodium, and rubidium are conserved, while mercury, an- timony, selenium, and scandium are depleted in the ash, rela- tive to the coal. Based on a 20,000 tons/yr consumption rate and a dry ash production of 1200 tons/yr, approximately 2.9 Ibs of mercury, 2.9 Ibs of selenium, and 2.6 Ibs of arsenic are emitted by the plant annually. An extrapolation of these values to the annual consumption rate of coal in the U. S. suggests that 30 tons of arsenic and mercury and over 300 tons of selenium/yr will be placed in the atmosphere by coal burning. 33058 West, J. M. MERCURY. Preprint, Bureau of Mines, San Francisco, Calif., lip., 1970.21 refs. The domestic production, consumption and uses, prices, foreign trade, and a world review of mercury were presented. In the field of technology, progress was made in geochemical exploration techniques for mercury deposits and for the trace mercury associated with base-metal deposits. Precision of mer- cury analyses with the atomic absorption spectrophotometer had a lower limit of detection of 0.05 micrograms. Using a one gram sample, a content as low as 50 ppb was detectable. A U. S. Geological Survey report was released describing a new technique of detecting the presence of mercury in vapors either in the soil or in the atmosphere above a deposit. Mercu- ry content of 12 ppb was detectable in airborne tests. 33641 Eshleman, Alan, Sanford M. Siegel, and Barbara Z. Siegel IS MERCURY FROM HAWAIIAN VOLCANOES A NATU- RAL SOURCE OF POLLUTION? Nature (London), 233(S320):471-472, Oct 15,1971. 7 refs. Field air samples were collected and analyzed to determine whether active volcanism on the island of Hawaii is producing significant amounts of mercury. A Utopia Instruments flame- less mercury analysis kit and a 10 cm absorption cell mounted on the burner of a Beckman 1301 atomic absorption spec- trophotometer were used to analyze the mercury contents of the trapped sample. Significant amounts of mercury were produced from volcanoes, with 98% of the mercury issuing from the Hawaiian fumaroles either in the form of a gas or as particles less then 0.3 micrometer in diameter. ------- A. EMISSION SOURCES 34424 Weiss, Herbert V., Minoru Koide, and Edward D. Goldberg MERCURY IN A GREENLAND ICE SHEET: EVIDENCE OF RECENT INPUT BY MAN. Science, 174(4010):692-694, Nov. 1971.11 refs. Neutron activation analysis of glacial ice from Greenland revealed significantly higher rates of mercury deposition in recent years. Samples from waters deposited prior to 1952 had from 30 to 75 ng mercury/kg of water with an average value of 60 + or - 17. The mercury concentration in waters deposited between 1952 and 1965 averaged 125 + or - 52 ng/kg of water with a range between 87 and 230. The background concentra- tion of mercury in the atmosphere appears to result from the degassing of the terrestrial upper mantle and lower crust. In- creased fluxes of mercury to the atmosphere may be the result of human activities that enhance the degassing process by in- creasing the exposure of crustal materials. Industrial activities that release significant quantities of mercury to the at- mosphere are chloralkali production, fossil-fuel combustion, cement production, and the roasting of sulfide ores. 34754 Stock, Alfred and Friedrich Cucuel THE OCCURRENCE OF MERCURY. (Die Verbreitung des Quecksilbers). Text in German. Naturwissenschaften (Berlin), vol, 22:390-393,1934. 9 refs. The mercury trace content of many inorganic and organic sub- stances was determined by highly sensitive analytical methods. In most cases mercury was isolated by heating pulverized material in a porcelain tube to 800 C for several hours and by condensing the mercury vapors in a U-shaped absorption bulb. The mercury was dissolved in chlorinated water and elec- trolytically precipitated on copper wire. From materials which yield interferring distillates, mercury was solubilized by a potassium chlorate-hydrochloric acid solution. The trace quan- tities of mercury found in some of the tested materials were: rocks (granite, syenite), 2.1 gamma; slate, 48 gamma; humus soil, 3-81 gamma; fossil coal, 0.8-2.2 gamma; spring water, 0.01-0.05 gamma; rain water, 0.05-0.48 gamma; lettuce, 0.9 gamma; dried beans, 4.6 gamma; pork, 0.6 gamma; calf s liver, 2 gamma; and fish, 2.4-19 gamma. Humans ingest approxi- mately 5 gamma Hg every day in meals. Thus traces of mercu- ry are ubiguitous, approximately in the order of magnitude of 0.00000001 g which is due to its great volatility which sets mer- cury from other metals. It is possible that mercury plays a biological role and that, like iron, it is one of the catalytic ele- ments. 34827 Wallace, Robin A., William Fulkerson, Wilbur D. Shults, and William S. Lyon MERCURY IN THE ENVmONMENT. THE HUMAN ELE- MENT. Oak Ridge National Lab., Tenn., National Science Foundation Interagency Agreement AAA-R-4-79, 61p., March 1971. 281 refs. NTIS: ORNL-NSF-EP-1 Numerous aspects of environmental mercury are reviewed in- cluding: flow of Hg in the U. S. during 1968; man-made and natural sources; environmental and biological levels; forms and transformation of Hg in the environment; turnover, trans- location, and accumulation in plants and animals; criteria for evaluating Hg levels, including human toxicity; existing stan- dards and tolerance limits in air, water, and food; physical and chemical properties; analytical methodology; the mercury cell chlor-alkali process; and recommendations for future work. The most important man-made sources of environmental He in the U. S. are chlor-alkali plants, seed-dressing agents, smelting operations, and fossil fuel combustion; the principal natural sources are the land mass itself and geothermal processes. The social implications of current use practices must be more in- tensively considered, and improved recycling and industrial technology must be developed. ------- B. CONTROL METHODS 06837 D. Lee REMOVAL OF REACTIVE LIGHT GASES WITH IM- PREGNATED ACTIVATED CHARCOAL. Preprint. (Presented at the Fourth Annual Technical Meeting and Ex- hibit, American Association for Contamination Control, Miami Beach, Fla., May 25-28, 1965.) Straight activated charcoal is the most-nearly universal adsor- bent known and for 95 percent of all air contaminants, it does an excellent job. On those light reactive gases for which ac- tivated charcoal does not have too much capacity, im- pregnated charcoals can be used to good effect A series of such charcoals has been developed wherein each member is impregnated with one or more substances and is particularly designed to have high capacity for the specific air contami- nant. Because of the high cost of impregnated charcoal, it may be desirable to use in conjunction with activated charcoal. Im- pregnated charcoal has been very sucessful in air purification to protect electronic equipment from sulfur and in removal of mercury vapor, ammonia, and acid gases missed by alkaline scrubbers. 06883 Petrova, N. I., and Zh. I. Pokrovenko METHODS OF REDUCING AIR POLLUTION DUE TO WASTE PRODUCTS FROM MKITOVKA MERCURY WORKS. ((K voprosu ob umen'shenii zagryazeniya vozdukha vybrosami Nikitovskogo rtutnogo zavoda.)) Hyg. Sanit. (Gi- giena i Sanit.), 30(l):74-77, Jan. 1965. Translated from Russian. CFSTI: TT 66-51033 The pollution of air by mercury vapor depends on the total quantity of the furnace gases; trapping the mercury vapor in condensation systems; hermetic sealing of the equipment and of the gas flues; and special purification of gases before their discharge into the atmosphere. The most efficient method of preventing the pollution of the atmosphere by mercury vapor is by improving technological processes in the plant. For ex- ample, since the quantity of exhaust gas increases if the ore has a higher moisture content, it is important to keep this moisture content within the technical specifications for plants operating tubular and retort furnaces. The most complete con- densation of mercury vapor reduces the amount of vapor in the exhaust gases to 50% and less. Such condensation is achieved by improving the performance of the condensation systems and by spraying the gas with water in scrubbers, or in the final compartment of the condensers. The furnace gases were purified by spraying with water in the retort furnace shop and by the use of the pyrolusite and selective chlorine- gas methods in the tubular furnace shop. Gases from the retort furnaces containing between 30 and 120 mg/cu m mercury pass through two packed scrubbers sprayed with process water be- fore being discharged into the atmosphere. The concentration of mercury vapor is reduced by nearly 80% on the average. 06884 Krupitskaya, I. D., and I. L. Pisarevskii AN INCIDENCE OF MERCURY VAPOR CONTAMINATION OF RESIDENTIAL BLOCKS. ((Sluchai zagryaznenia parami rtuti zhilykh kvartir.)) Hyg. Sanit. (Gigiena i Sanit.), 30(1):81- 83, Jan. 1965. Translated from Russian. CFSTI: TT 66-51033 In view of the possibility of the poisonous effect of mercury, the preparation of amalgam in dentist's offices is authorized only in an exhaust hood with the fan turned on. Three such hoods were installed in the new dental clinic in Chelyabinsk. The ducts in the exhaust system leading from them were made out of asbesto-cement ductwork and ran through builtin closets in the apartments on the floors above the clinic. When the clinic was being accepted for operation, the sanitary- epidemiological station demanded the submittal of documents pertaining to the concealed work, with an indication that the exhaust ventilation had been executed according to the design. A year after the dental clinic had begun to operate, the sanita- ry-epidemiological station received complaints from the te- nants in three stairwells in the building that medical smells were entering their apartments. After determination of the ex- istence of mercury in the areas intended for human habitation, the sanitary-epidemiological station immediately prohibited the clinic from filling teeth with copper amalgam. Simultaneously the decontamination of the mercury in the apartments began. This process was carried out with an acidulous solution of potassium permanganic. At the request of the sanitary- epidemiological station, a commission was created, which established that the air seal of the exhaust ducts had been broken as a result of the settling of the building and by the fact that the asbestos-cement ducts had broken in a number of places where they fitted into the ceilings. Repeated tests on the apartments for the existence of mercury in them after the carrying out of all these measures yielded negative results. 28918 Neal, Paul A., Robert H. Flinn, Thomas I. Edwards, Warren H. Reinhaut, J. Walter Hough, J. M. Dallavalle, Frederick H. Goldman, David W. Armstrong, Albert S. Gray, Allan L. Coleman, and B. F. Postman MERCURIALISM AND ITS CONTROL IN THE FELT-HAT INDUSTRY. Public Health Bull., no. 263, 132p., 1941. 57 refs. Fifty-nine cases of chronic mercurialism were found on medi- cal examination of 534 hatters employed in five representative felt hat factories. Four of the twenty-one men engaged in mix- ing and blowing; 8 of the 34 coners; 6 of the 29 hardeners, and 33 of the 179 starters, wetters-down, and sizers were so diag- nosed. Mixers and blowers were exposed to 5 mg Hg per 10 cu m of air; hardeners to 2.7; and starters, wetters-down, and sizers to 2.1 mg Hg per 10 cu m of air. In any range of expo- sure above 1.0 mg Hg per.100 cu m the incidence of mercurial- ism increased with increasing duration of employment. No cases were found among hatters exposed to less than 1.0 mg Hg per cu m of air, as measured by the Nordlander instru- ment Chronic mercurialism is characterized by fine, intention ------- B. CONTROL METHODS tremor; psychic irritability of an exaggerated degree; dermographia, excessive perspiration, and abnormal readiness to blush; exaggerated tendon reflexes; pallor; and certain ab- normalities of the mouth. Mercurialism cases were found to excrete slightly less mercury in their urine than similarly ex- posed but nonaffected workers. Workers with elevated systolic blood pressure and albuminuria tended to excrete less mercury in their urine than similarly exposed workers who were normal in these respects. The most direct means of preventing the oc- currence of mercurialism among hatters is to substitute a non- toxic carroting agent for mercury. Until this is practicable, control of the mercury hazard depends on coordinated general and local exhaust ventilation so arranged and maintained as to prevent the escape of mercury into the breathing zone of wor- kers, and upon enclosure or segregation of fur storage rooms, blowers, driers, and other sources of volatile mercury. Sketches of hoods and other enclosures, and specifications for air flow are presented. Methods for quantitative chemical anal- ysis of the mercury content of air, fur, tank water, etc., and for the quantitative spectrographic analysis of mercury in urine are described in detail. (Author abstract) 29328 Rastas, J., E. Nyholm, and J. Kangas MERCURY RECOVERY FROM SO2-RICH SMELTER GASES. Eng. Mining J., 172(4): 123-124, April 1971. 1 ref. When Outokumpu Oy put on-stream its zinc plant at Kokkola, Finland, about half of the mercury contained in the zinc con- centrate went to the sulfuric acid produced, and Outokumpu had to find a method for mercury removal from roaster gases. If roasted in a fluidized bed furnace at 950 C, the mercury sul- fide contained in zinc concentrates decomposes and the mer- cury vaporizes. The heat contained in the gases is recovered in a waste-heat boiler. Dust is separated from the gas with cyclones and electrostatic precipitators, and the gases at a temperature of 350 C go to the sulfatizing unit. The mercury sulfatizer is a. brick-lined tower containing ceramic packing; here, the mercury-bearing gases are contacted by a counter- current flow of strong sulfuric acid which sulfatizes the mer- cury. Sulfuric acid flows from the bottom of the tower to an intermediate storage tank, from where it is pumped through a heat exchanger and recycled to the tower. Part of the acid is taken from the storage tank to a thickener, where mercury sulfate and selenium compounds are separated from the solu- tion. Zinc and iron salts formed from the dust of the gas are also separated from the acid in the thickener. Gas leaving the mercury sulfatizer at a temperature of 180 C contains less than 0.2 mg/cu Nm of elemental mercury. The gas is then washed with weak sulfuric acid in a venturi scrubber to decrease the temperature to about 70 C and to lower the chlorine content to a level permitted for sulfuric acid production. The underflow which is obtained when the mercury and selenium compounds are separated from this weak acid in the thickener is combined with the underflow of the thickener of the mercury sulfatizer. Precipitates from the combined underflow are washed with water. The filtered residue is mixed with lime in a certain pro- portion, and the batch charged to a resistance-heated furnace whose temperature is raised gradually to about 650 C. The mercury compounds decompose, and metallic mercury vaporized is carried out of the furnace together with an air stream. 29450 Kanbara, Shu HIGH POLYMER WASTE DISPOSAL AND TECHNICAL RENOVATION. (Kobunshi haikibutsu shori to gijutsu kakushin). Text in Japanese. Preprint, Japan Society for High Polymers, Tokyo, 8p., 1971. 8 refs. (Presented at the Symposi- um of High Polymer Disintegration, 2nd, Tokyo, Japan, April 14-16, 1971, paper 4.) The relationships between raw materials and production, con- sumption and values, and products and by-products are criti- cally reviewed to establish the basic guidelines for an industri- al waste disposal system. The desulfurization of heavy oils and the procedsing of the iron ores from mainland and China will occur at the place of production. New manufacturing process are mentioned in the processing of high quality lubricants without using sulfuric acid; the development of inexpensive and effective polymerization preventive agents other than sul- fur used in refining styrene monomer; the synthesis of e- caprolactam with less ammonium sulfate byproduct; the development of a new catalyst for polypropylene polymeriza- tion with less attacktic (?) production; the separation of oil droplets of less than 100 ppm in waste water by polypropylene or polyurethane; and the removal of the minute mercury con- tent of water by polyethylene glycol. Research on collection, shredding, and disintegration by light or microorganisms are explained and the improvement of the energy efficiency in chemical manufacturing processes is emphasized. In mechani- cal manufacturing process, such as rolling the development of new lubricants is desired. An example of the new types of combined industry which utilize each other s by-products is the use of sodium sulfite from the sulfur dioxide of a thermal power plant in pulp manufacturing. Iron oxides and S02 are being recovered by burning the iron sulfate from a titanium white factory and sulfuric acid pitch from a lubricant factory. A global look is taken on the waste disposal problem. 30117 Flewelling, F. J. LOSS OF MERCURY FROM CHLORALKALI PLANTS. Chem. in Can., 23(5):14, May 1971. (Presented at the Royal Society of Canada, Symposium on Mercury in Man s Environ- ment, Montreal, Quebec, Feb. 1971.) Approximately 60% of the chlorine and caustic soda manufac- tured in Canada is produced by the mercury cell process, the remainder by a diaphragm cell process in which mercury is not involved. Starting in 1970, the mercury cell plants undertook extensive modification to reduce mercury losses in products, in solid wastes, to the atmosphere, and to sewers. Typical abatement methods are reviewed, and the extent to which they reduce losses indicated. The methods include filtration, sulfide precipitation, cooling of hydrogen, mist elimination, and restricted use of water. The mercury emission limit per ton of chlorine produced is 0.005 Ib/ton, effective Sept 1, 1971. 31390 Zemskov, I. F. and A. S. Stepanov MECHANISM OF INTERACTION OF ORGANOMETALLIC COMPOUNDS ON THE SURFACE OF ACTIVATED CAR- BON. J. Appl. Chem. (USSR) (English translation from Rus- sian of: Zh. Prikl. Khim.), 43(1):185-188, Jan. 1970. 6 refs. Organometallic vapors in air-gas mixtures were adsorbed on activated carbon and studied for the nature of their surface in- teractions. The vapors were tetraethyl lead (TEL), diethylmer- cury (DEM), tetraethyl tin (TET), and ethylmercuric chloride (EMC). Tetraethyl lead and TET interacted with oxygen of the gaseous mixtures on the activated carbon surface. Adsorbed TEL AND TET underwent mineralization. Treatment of car- bon saturated with TEL vapors with oxidants such as chlorine or ozone accelerated mineralization of the adsorbed TEL, ------- 8 MERCURY AND AIR POLLUTION Mineralization of TEL increased the activity of activated car- bon with respect to TEL vapor. Diethylmercury and EMC vapors did not interact with oxygen on the carbon surface to any appreciable extent. When the vapors were adsorbed in the presence of ozone, the adsorbate content of the carbon in- creased only in the case of TEL. This was due to the ease with which TEL is oxidized. (Author conclusions modified) 32461 Kangas, J., E. Nyholm, and I. Rastas SMELTER GASES YIELD MERCURY. Chem. Eng., 78(20):55-57, Sept. 6, 1971. A technique was developed which scrubs the sulfur dioxide- rich gases from smelter or roasting operations of mercury be- fore the gas is processed for sulfuric acid production. At the Kokkola plant of Outokumpu Oy (Finland), zinc concentrates are roasted in a fluidized-bed furnace at at temperature of 950 C. Mercury sulfide contained in the concentrate decomposes completely and mercury vaporizes. The heat contained in the gases is recovered in a waste heat boiler, and dust is separated from the gas by means of cyclones and electrostatic precipita- tors. Mercury-containing gases coming from the electrostatic precipitators at a temperature of 350 C go to the sulfatizing unit The mercury sulfatizer is a brick-lined tower containing ceramic packing, in which mercury-bearing gases contact a countercurrent flow of strong sulfuric acid. Mercury and selenium are scrubbed from the gas by the acid. Sulfuric acid flows from the bottom of the tower to an intermediate storage tank, it is then pumped through a heat exchanger and recycled to the tower. Zinc and iron salts, as well as chlorides and fluorides, can also be removed in this process. Washing the precipitate, and the production of metallic mercury are men- tioned. 34795 Porter, D. H. and J. D. Watts ECONOMIC ASPECTS OF CONVERTING A CHLOR-AL- KALI PLANT FROM MERCURY CELLS TO DIAPHRAGM CELLS. Preprint, American Inst. of Chemical Engineers, New York, 15p., 1971. (Presented at the American Institute of Chemical Engineers, National Meeting, 68th, Houston, Tex., Feb. 28-March 4, 1971.) In 1969 the U. S. electrolytic chlorine-alkali industry purchased over 20,000 flasks of mercury, or over 25% of the total U. S. consumption to become the largest single purchaser. This industry does not consume mercury to form a product. Following the initial charge, for which another several thousand flasks were purchased in 1969, all mercury entering a plant is used to replace losses — losses to the sewer, losses in sludges, losses in ventilation air, and losses to product La the form of contaminants. In March 1970, the Chlorine Institute formed an ad-hoc committee to concern it- self with the subject and set up several task forces to examine the many phases of the problem. Threshold Limit Values, con- trol programs, and estimated costs are considered. Conversion to diaphragm cells is recommended to eliminate possibilities of mercury pollution. Differences are discussed between the mer- cury cell and diaphragm cell plants. These pertain to the cell house, rectifiers and amperage, chlorine temperatures and cooling equipment, hydrogen temperatures and recovery, the brine system, caustic handling and waste handling or effluent treatment Costs are considered. ------- C. MEASUREMENT METHODS 05191 A. R. Barringer DEVELOPMENTS TOWARDS THE REMOTE SENSING OF VAPOURS AS AN AIRBORNE AND SPACE EXPLORATION TOOL . Proc. Symp. Remote Sensing Environ., 3rd, Ann Ar- bor, Mich., 1964. pp. 279-92. Feb. 1965 The remote sensing of geochemical parameters is investigated. The techniques under study and development are concerned with sensing the dispersion of volatile components of orebodies or their oxidation products in the surface soils and in the air above. The elements and compounds of interest in- clude mercury, iodine and sulphur dioxide in connection with metal bearing deposits, and hydrocarbon gases and iodine in association with oil fields. (Author abstract) 05977 Browett, E. V. ANALYTICAL METHODS. Ann. Occupational Hyg. (London) 8, (1) 21-8, Mar. 1965. (Presented at the 16th Conference, British Occupational Hygiene Society, Apr. 7-8,1964.) Techniques of performing 'spot' tests for the presence of metallic or metal-containing contaminants in atmospheres are reviewed briefly. The procedures for more accurate determina- tion of the concentration of atmospheric contaminants and for the determination of the metal content of blood and of urine are treated as comprising three steps: collection, pre-treatment and analysis. Methods for the collection and pre-treatment of various amples are are described. Colorimetric and polaro- graphic methods of analysis Methods for the collection and pre-treatment of various samples of prepared sample solutions are discussed with particular refer- ence to the determination of trace amounts of lead and attention is drawn to various precautions that must be taken in order to obtain reliable results. (Author abstract) 06045 D. L. Adamson, J. D. Stephens, and W. M. Tuddenham APPLICATION OF MINERALOGICAL PRINCIPLES AND INFRARED SPECTRA IN DEVELOPMENT OF SPECTRO- GRAPffiC TECHNIQUES. Anal. Chem. 39(6):574-578, May 1967. (Presented at the Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy, March 5,1965.) Correlation of infrared spectra of spectrographic arc residue beads with emission data revealed that samples yielding beads containing olivine and pyroxene group minerals evolved volatile elements in the arc most rapidly and produced the highest elemental line intensities for the volatile elements and the lowest intensities for iron. The hypothesis was developed that combination of iron with silca to form linked ionic groups within the melt decreased iron evolution. The resulting in- crease in arc temperature intensified excitation of the volatile elements. Exclusion of extraneous ions from these ionic groups also appeared to be a factor in the acclerated evolution of volatile elements. Methods were developed for determina- tion of volatile elements-antimony, arsenic, bismuth, cadmi- um, gallium, germanium, indium, lead, mercury, tellurium, thallium, and zinc-in a wide variety of materials, including iron oxides, limonite, magnetite, pyrite, chalcopyrite, man- ganite, silca, and silicate minerals in general. (Authors' ab- stract) 07284 Khrustaleva, V. A. and N. G. Shalya MERCURY POLLUTION OF INDUSTRIAL PREMISES IN WORK INVOLVING MERCURIC CHLORIDE. Text in Rus- sian. Gigiena i Sank. Vol. 9, p. 22-25, 1950. Engl. transl. by B. S. Levine, U.S.S.R. Lit. on Air Pollut. & Relat. Occup. Dist., Vol. 2, p. 4-7, March 1960. CFSTI TT60-21188 An investigation was made into the source of mercury in the atmosphere inside a dry cell plant. The method of HgC12 ab- sorption by a NaCl solution was used in making separate determinations of the simultaneous presence of mercuric chloride and of mercury fumes. Mercury was determined colorimetrically. The results indicated that air pollution in the shops was caused almost entirely by Hg fumes and that the concentration of the HgC12 fumes was negligible. High con- centrations of both substances were found in scrapings from the walls and floor. At this point it became certain that mercu- ry was the source of pollution of the working area; attempts were then made to establish the cause of HgC12 reduction to Hg. The reducing action of the individual ingredients of the electrolyte and of the flour thickener was also investigated. Since calcium chloride, ammonium chloride and zinc chloride did not reduce mercuric chloride, it was assumed that metallic zinc, as an impurity of the zinc chloride, might have been responsible for imparting this property to the electrolyte. How- ever, results of the analyses did not substantiate this assump- tion. An attempt was then made to determine mercury in the final electrolyte which contained the flour thickener. Mercury was found in amounts of 0.099 - 0.2 mg per 100 g of final elec- trolyte. On the basis of information found in the literature con- cerning the property of organic substances to reduce HgC12 experiments were set up to determine the reducing properties of the flour. Subsequent colorimetric determinations of mercu- ry in the electrolyte yielded positive results. To improve the sanitary-hygenic conditions in the shops, it was suggested that mercuric chloride, which is not an electrolyte, be replaced by another less toxic substance, and that substitutes be found for the flour thickener. 07567 Razumov, V. A. and T. K. Aidarov INDIRECT SPECTROPHOTOMETRIC DETERMINATION OF MERCURY VAPOR CONCENTRATIONS IN THE AIR OF WORK PREMISES. (Kosvennyi spektrofotometricheskii metod opredeleniya parov rtuti v vozdukhe rabochikh pomeshchenii.) Text in Russian. Gigiena i Sanit, 30(7), July 1965. Engl. transl. by JPRS. OHYG. Sanit., 30(7):81-83, My 1967. CFSTI: TT66-51033/3 The method proposed states that the sample of air for analysis should be taken by drawing 100 1 air, at the rate of 5 1/min, into an absorbing solution consisting of 5 ml 0.1 N potassium ------- 10 MERCURY AND AIR POLLUTION permanganate and 5 ml 10% sulfuric acid. The absorbing solu- tion is decanted into a separating funnel and 5% solution of oxalic acid is added in small amounts to destroy the perman- ganate until the solution is completely decolorized. The volume is then brought up to 20 ml with twice-distilled water prepared in a quartz apparatus, 5 ml of 6 N acetic acid are added, the liquid is shaken and an addition is made of 10 ml dithizone (C.P.) solution in carbon tetrachloride or chloroform, with a concentration of 1 mg/100 ml. The mixture is vigorously shaken for 15 to 20 sec, 10 ml carbon tetrachloride are added, and the liquid is again shaken. The colored extract is then de- canted into a cell. Mercuric chloride (0.0135 g) is dissolved in water in a 100 ml volumetric flask (the solution can be used for 6 months). The working standard solution, with a mercury concentration of 1 microgram/ml, is prespared by diluting the basic solution with twice-distilled water to 100 times the original volume. This solution is unstable, and it is not recom- mended to store it for long. Measurements are carried out by means of an SF-4 spectrophotometer.* 07772 Christie, A. A., A. J. Dunsdon, and B. S. Marshall FIELD METHODS FOR DETERMINING CERTAIN OR- GANOMERCURIAL VAPOURS IN AIR. Analyst, 92(1092):185-191, March 1967. 10 refs. Two methods are proposed for determining the vapours of cer- tain organomercury compounds in air, at concentrations in the region of 10 microgram of mercury per cu.m. The mercurial vapours are collected either on a glass-fibre pad treated with cadmium sulphide, or on a fhiidised bed of active carbon. Mercury vapour is released by heating, and is determined by comparing the colour produced on selenium sulphide test- papers with a range of standard colours. The cadmium sul- phide method is applicable to the determination of ethylmercu- ry chloride, ethylmercury phosphate, diphenylmercury and methylmercury dicyandiamide; the fluidised-bed method is also applicable to this range of compounds and, in addition, to diethyl mercury. Mercurial dusts can be determined by the cadmium sulphide method, and mercury vapour by a slight modification of the fluidised-bed technique. In both methods the apparatus used is simple to manipulate and the time needed for a complete determination is less than 30 minutes. (Authors' summary) 08134 A. S. Aruin DETERMINATION OF MERCURY IN ATMOSPHERIC AIR. In: Survey of U. S. S. R. Literature on Air Pollution and Re- lated Occupational Diseases. Translated from Russian by B. S. Levine. National Bureau of Standards, Washington, D. C., Inst for Applied Tech., Vol. 3, p. 18-20, May 1960. CFSTI: TT 60-21475 Mercury in atmospheric air is determined colorimetrically. A detailed descriotion of the preparation of samples and stan- dards is given. The experimental samples are compared colorimetrically with the standards. 09333 Lial W. Brewer, (ed.) ANALYTICAL PROCEDURES FOR THE ENVIRONMENTAL HEALTH LABORATORY. Sandia Corp., Albuquerque, N. Mex., Industrial Hygiene Lab., SC-M-3044, 147 p., Feb. 1968. 13 refs. This is a manual compiled of thirty-nine analytical procedures used by an industrial hygiene laboratory. The procedures for the following substances in air are included: The Determinaton of Acetone, Acid and Alkali Contaminants; Benzene, Toluene, and Other Aromatics; Beryllium (Spectrographic Method); Beryllium (Morin Method); Cadmium; Chromic Acid, Chro- mates, and Dichromates; Formaldehyde; Lead; Methanol; Nitrogen Dioxide; Oil Mist; Ozone (Colorimetric Method); Ozone (Titration Method; Phosgene; Silica (Colorimetric Method); Sulfur Dioxide; Thallium; and Zinc. 09369 Wilson, H. N. and G. M. Duff INDUSTRIAL GAS ANALYSIS: A LITERATURE REVIEW. Analyst, 92(1101):723-758, Dec. 1967. 712 refs. Analytical methods are reviewed for: permanent and inorganic gases; analysis of liquefied or pure gases; fuel gases; flue gases; motor exhaust gases; analysis of micro samples; and at- mospheric pollutants. The years from 1958 to about mid-1966 were covered. In no branch of analysis is the swing towards physical methods more marked than in gas analysis. There have been no important developments of the conventional methods during the last ten years; the chief advances have been the application of galvanic methods to 'trace* of certain gases, and gas chromatography. The rapid spread of the elec- trogalvanic methods for the 'on-stream' determination of traces is also most significant. The other most noticeable fea- ture is the vast and increasing attention being paid to at- mospheric pollutants of all kinds, particularly sulphur dioxide, sulphuric acid and hydrocarbons. 09587 Linch, A. L., R. F. Stalzer, and D. T. Lefferts METHYL AND ETHYL MERCURY COMPOUNDS-- RECOVERY FROM AHt AND ANALYSIS. Am. Ind. Hyg. As- soc. J., 29(l):79-86, Jan.-Feb. 1968. 15 refs. (Presented at the 28th Annual Meeting, Ameri- can Industrial Hygiene Associa- tion, Chicago, Dl., May 3,1967.) Attempts to recover dimethyl or diethyl mercury vapor by ab- sorp- tion in the reagents usually recommended for collection of mercury from air met with failure. The absorber design, whether impinger or porous glass diffusion type, contributed only minor differ- ences. However, 0.1N iodine monochloride in 0.5M hydrochloric acid gave quantitative recoveries of dimethyl and diethyl mercury, monomethyl and monoethyl mercuric chlorides, and mercury vaporized into moving airstreams. The reagent also is applicable to the analysis of mercurial-bearing dusts. Again, the absorber design was not critical but impinger recoveries were rate-dependent. The Teflon permeation tube for SO2 calibration was adopted suc- cess- fully to the dynamic calibration of microimpingers developed for personnel monitoring. The ACGIH procedure for analysis was followed after sample collection. (Authors' abstract) 09751 Schmertzing, Hannibal and Julian H. Chaudet UTILIZATION OF INFRARED SPECTROPHOfOMETRY IN MICROCONTAMINANT STUDIES IN SEALED ENVIRON- MENTS. Melpar, Inc., Falls Church, Va., Contract AF 41(609)-1962, Task 793002, SAM-TR-67-2, 20 p., Jan. 1967. CF- STI, DDC: AD 650000 Microcontaminants in a sealed environmental system were separated and identified. The separation and identification of the collected samples were accomplished with gas-liquid chro- matography and infrared spectrophotometry. Fifty-four sets of samples of the atmosphere from a space cabin simulator, com- ------- C. MEASUREMENT METHODS 11 prising 162 individual samples, were analyzed. The method used was gas-liquid chromatography using a flame ionization detector. The retention time on the column was used for identification, while the peak area was used for quantitative estimation of the compounds. A collection of the vapor in- frared spectra of 146 compounds, which are possible contami- nants for space cabin simulators, has been compiled during 2 years. A computer program for sorting infrared spectra with the aid of the ASTM deck of infrared cards has been established. Analyses have been made of gases evolved from paint panels, from the decomposition of a Teflon insulator, and from human waste products. 10392 G. Thilh'ez RAPID AND PRECISE DETERMINATION BY ATOMIC AB- SORPTION OF TRACES OF MERCURY IN THE AIR AND IN BIOLOGICAL MEDIA. (Determination precise et rapide par absorption atomique de traces de mercure dans 1'air et dans les milieux biologiques.) Text in French. Chim. Anal. (Paris), 50(5):226-232, May 1968. 4 refs. A method is described for the determination of traces of mer- cury. The mercury is fixed on a platinum trap which is then rapidly heated by high-frequency induction; mercury is thus vaporized and conducted to a mercury cathode ray tube. A peak is recorded from this tube (at 155.7 nm.) which cor- responds to the mass of mercury. Sensitivity is 1 micro- gram/cu m. Tests are described in which the levels of mercury in blood and urine samples were determined. Sensitivity in biological samples is 2 microgram/1. when a sample of 1 ml. is used. This method is recommended for its speed (requiring about 15 min.), its sensitivity, and the possibility of avoiding unwanted contaminants and intermediates. 11626 Brune, D., S. Mattsson, and K. Liden APPLICATION OF A BETATRON IN PHOTONUCLEAR AC- TIVATION ANALYSIS. Aktiebolaget Atomenergi (Stockholm), AE-333,1968.19 refs. Determinations of iodine in Pharmaceuticals and of fluorine, lead, and mercury in pure compounds were made by photonuclear activation analysis, with a betatron accelerator used as the irradiation facility. The accelerator yields a lower photon flux density than a linear accelerator but has great flexibility with regard to beam direction. Uniform irradiation of the samples was achieved by inserting a rotating sample holder device in the brehmstrahlung beam of the'betatron. The detection limits obtained for iodine, fluorine, lead, and mercu- ry were 50, 3, 400, and 15 micrograms, respectively. It is con- cluded that the betatron has practical applications in the field of pharmacy but is unsuited for lead analyses in pollution stu- dies of air, water, and food. It could be used for the deter- mination of mercury in various biological materials, though better results are expected to be obtained by conventional neutron activation techniques. 15451 Ueda, K. STUDIES ON THE HARMFUL EFFECTS OF MERCURY WITH SPECIAL REFERENCE TO MERCURY INTOXICA- TION AMONT DENTAL TECHNICIANS. (Suigin no dokusei ni kansuru kenkyu: Tokumi shikairyo ni okeru suigjn- chu- doku). Text in Japanese. Shika Gakuho (Monthly Record Dental Sci., Pract., Miscellany), 68(6):941-951,1968. 22 refs. Dentists and dental technicians are exposed to the dangers of mercury inhalation and absorption through the skin. The max- imum tolerable concentration of mercury vapor in the air is 0.1 mg/cu m. The room where mercury amalgam for fillings is compounded can provide a very hazardous environment if ventilation is inadequate, since mercury under such conditions can reach a level of 19 mg/cu m. A mercury vapor meter which directly measures ambient vapor concentrations by means of a mercury lamp at a wavelength of 253.7 mil- limicrons is a convenient instrument with a sensitivity of 0.01 mg/cu m. The atmospheric concentration of mercury vapor is directly proportional to the amount of mercury excreted in the urine. The day after receiving a filling, the patient, as well as the dental technicians, show twice to ten times, respectively, the normal amount of mercury excretion. In recent years, mer- cury vapor meters used in dental offices have helped to main- tain a normal level of urinary mercury excretion in dental wor- kers. Allergic reactions to mercury, occurrence of mercury in foods, symptoms of acute and chronic mercury intoxication, and treatment are also discussed. 19506 Kanebo, M., S. Naito, S. Setsuda, and J. Matsuzaki ATOMIC ABSORPTION PHOTOMETRIC DETERMINATION OF MERCURY IN Am. (Genshi kyukoh kohdohoh ni yoloo kookichu no sooigin no teilyohoh). Text in Japanese. Taiki Osen Kenkyu (J. Japan Soc. Air Pollution), 4(1):105, 1969. (Proceedings of the Japan Society of Air Pollution Annual Meeting, 10th, 1969.) An improved method to determine the air-borne mercury by means of atomic absorption photometry is obtained by modify- ing the method reported by W. Ronald Hatch. Reagents in- clude 1.18 N sulfuric acid; sulfuric acid hydroxyl amine solu- tion where 15 gm of sulfuric acid hydroxyl amine is dissolved into water to 500 ml; tin dichloride solution where 10 gm SnC12.2H20 is dissolved into 0.5N sulfuric acid to 100 ml; and mercury standard solution; where 1 ml of this solution in- cludes 0.1 mg Hg (2)(+). Air is sampled into the equal-volume mixture of 2N sulfuric acid and 0.3% potassium permanganate solution and added sulfuric acid hydroxyl amine solution to decolorise it; this becomes a sample solution. After 100 ml of the sample solution is added with 25 ml of 18N sulfuric acid, 10 ml of sulfuric acid hydroxyl amine, and 10 ml of tin dichloride solution, it is circulated through a measuring instru- ment. The concentration of mercury, called C, is obtained by determining the absorption rate of mercury vapor at 253.7 mil- limicron (A), absorption rate of a standard (As), which con- sists of 4 ml of mercury standard and water in the total 100 ml, and absorption rate of 100 ml of water (A sub O) as fol- lows: 20944 QUANTITATIVE DETERMINATION OF MERCURY VAPOR IN THE MR. U.S.S.R. Literature on Air Pollution and Re- lated Occupational Diseases, vol. 8:30-33, 1963. (B. S. Levine, ed.)CFSTI: 63-11570 A method for the determination of mercury vapor in the air of industrial premises for sanitary control purposes was described. The method is based on the fact that the formation of CuIHgI2 in solution is accompanied by the development of a red color. This compound becomes mixed with the simul- taneously formed copper iodide; in the presence of mercury, it also forms a colorless substance. The air is aspirated at the rate of 2 1/min through two consecutively placed absorbers, each containing 10 ml of absorber solution. The content of each absorber is analyzed separately. The absorber solution is ------- 12 MERCURY AND AIR POLLUTION poured into a 10 ml cylinder graduate. The glass absorber is rinsed with a small amount of water and poured into the same cylinder graduate. Fresh absorber solution is added to obtain a total of 10 ml of solution. Five ml of the solution from each 10 cylinder graduate is placed in separate centrifuge tubes. A standard scale is prepared at the same time. One ml of the composite solution is added to all the tubes and shaken cau- tiously. The solutions then are allowed to stand for 5-10 min to complete the precipitation of CuIHgI2. The precipitates in the centrifuge tubes are then colorimetrically compared. The sen- sitivity of the method is 0.3 mg of mercury in the analyzed volume. The reaction is nonspecific in the presence of mercu- ric chloride or organic mercury compounds. 23771 Patton, W. F. and J. A. Brink, Jr. NEW EQUIPMENT AND TECHNIQUES FOR SAMPLING CHEMICAL PROCESS GASES. J. Air Pollution Control As- soc., 13(4):162-166, April 1963. 7 refs (Presented at the Air Pollution Control Association, 55th Annual Meeting, Chicago, May 20-24, 1962.) When the need for improved sampling equipment and techniques was recognized at Monsanto a number of years ago, a cascade impactor suitable for adiabatic measurements on process gases was developed. Simpler equipment, suitable for routine control of air pollution, can determine accurately the weight or chemical composition of the particles in a gas stream, as well as separately determine the loading of particles greater than three micron in diameter from particles smaller than this. The dust or mist sampling device is contained in a small case with a carrying handle and removable sides similar to an Orsat analyzer. Gases first enter the cyclone where the larger particles are collected, while the smaller particles are carried over and collected by the filter. Sampling preparations are discussed for large particles, fine particles, and isokinetic sampling. The procedures for sampling are outlined, as well as an example for sulfuric acid mist. Calculations of loadings from sampling data are also indicated. Eight sets of the sam- pling equipment have been utilized for sulfuric, phosphoric, and nitric acid mists, mercury mist, various phosphate salt dust, ammonium chloride fume, ammonium nitrate fume, and several organic mists. 25431 Aughey, Henry A RAPID MOBILE ANALYZER FOR MINUTE AMOUNTS OF LEAD IN ADI. J. Opt. Soc. Am., 39(4):292-293, April 1949. 2 refs. A mobile instrument of extreme sensitivity is described which furnishes a rapid indication and an approximate assay of local- ized relatively high concentrations of lead, combined or ele- mental. Samples are drawn through a condensed spark discharge adjusted to minimize air lines and to excite the lead spectrum which is photographed with a small quartz instru- ment. Visual examination of a series of exposures provides data on lead concentration as a function of time and location. A sensitivity of better than one part in 20 million can be main- tained in routine operation. Instanteous response realized by substitution of a specially- designed photoelectric Geiger counter for the photographic plate. The technique is not yet developed to a point where continuous quantitative measure- ments are available over periods of many hours or days. Although tried only for lead, similar sensitivity for mercury is expected. The high energy of the spark source permits excita- tion of materials present both in elemental and combined forms and offers in addition a rapid analysis when extreme sensitivity is not needed, as for dusts involving such elements as arsenic, barium, and beryllium. (Author abstract modified) 26275 Chatigny, M. A., J. C. Craig, J. C. Edinger, G. Forester, J. E. GUI, W. D. MacLeod, R. C. Maninger, T. Schneck, Jr., E. R. Stephens, K. G. P. Sulzmann, and H. W. Wolochow POLLUTANT MEASUREMENT AND MONITORING IN- STRUMENTATION TASK FORCE ASSESSMENT. In: Pro- ject Clean Air. California Univ., Berkeley, Task Force 6, 170p., Sept. 1,1970. 237 refs. Instrumentation concepts and devices for the measurement and monitoring of air pollutants have been subdivided into three principle categories of application: ambient air and emis- sion source monitoring for regulatory purposes and for con- trol, vehicle emission monitoring and control, and research in pollution chemistry and laboratory analysis of pollutants. Cur- rently available instruments are discussed, including oxidant analyzers, electrochemical analyzers, chromatography, spec- troscopy, photoelectric devices, and paniculate and gas sam- plers, while research needed is indicated. An instrument is needed for quantitative plume capacity measurements, to mea- sure ambient air concentrations of hydrogen sulfide with a sensitivity and accuracy of 1-3 ppb over a range of 1-100 ppb, and a simple instrument is needed for measurements of the total aldehyde concentration, as well as lead, mercury, and chlorine. Improvements in the area of light and laser applica- tions are also indicated. There is a need for rapid and valid verification methods for the proper functioning of present and future car emission control devices. Low-cost instruments and systems are needed in the study of urban diffusion processes. There is a need to devise ways for using the electron microscope. Various other projects are cited. 27389 Delaughter, Buford MERCURY DETERMINATION IN INDUSTRIAL PLANT AT- MOSPHERES BY ATOMIC ABSORPTION SPEC- TROPHOTOMETRY. Atomic Absorption Newsletter, 9(2):49- 50, March-April 1970. 2 refs. A simple and accurate procedure is described for the deter- mination by atomic absorption spectrophotometry of any form of mercury in industrial atmospheres. A sample of air contain- ing mercury vapor is collected by scrubbing through a 1 N hydrochloric acid solution, the pH of which is adjusted to 2.5- 4.0 with mercury-free caustic and chelated with ammonium pyrrolidine dithiocarbamate (APDC). The resulting complex is extracted into an organic medium, and the concentration of mercury determined from absorbance at 2537 A. An equation is given for finding the concentration of mercury in air from the concentration in the extracted sample. 28126 Fukui, Shozo MEASUREMENT OF DELETERIOUS GAS. (Yugai gasu no sokuteihoho). Text in Japanese. Preprint, Society of Electro- chemistry, Tokyo (Japan), Kanto Div., 24p., 1971. (Presented at the Seminar on Air Pollution, Tokyo, Japan, Feb. 3-4, 1971, Paper 5.) The photometric determination of deleterious gases is con- sidered, as well as the analysis of heavy metals in the at- mosphere by an atomic absorption method, and the determina- tion of atmospheric concentrations of organic solvents by gas chromatography. Accordin to the type of gas to be measured, sampling and preparation of test chemical solutions are in- ------- C. MEASUREMENT METHODS 13 dicated. Measuring procedures are presented for hydrogen sul- fide, sulfur dioxide, ammonia, hydrogen fluoride, nitrogen dioxide, nitrogen dioxide plus nitric oxide, hydrogen chloride, chlorine, oxidants and ozone. The chemical analyses of heavy metals includes the determination of mercury, lead, cadmium, zinc, copper, iron, and manganese. For example, mercury vapor is absorbed in a sulfuric acid potassium permanganate solution and heated slowly for 30 min. A hydroxilamine solu- tion is added to decolor the potassium permanganate, and a stannous chloride solution is added to reduce the mercury. Vaporized by circulating air, the mercury is absorbed by an absorption cell and measured at 253.7 millimicrons. The gas chromatograhic method is introduced for the measurement of acetone, chloroform, carbon tetrachloride, cyclohexene, tetrachloroethane, phenol, and other organic solvents in the at- mosphere. 28214 Hemeon, Wesley C. L. and George F. Haines, Jr. AUTOMATIC SAMPLING AND DETERMINATION OF MICRO-QUANTITIES OF MERCURY VAPOR. Am. Ind. Hyg. Assoc. J., vol. 22:75-79, Feb. 1961. 1 ref A new technique for the automatic sampling and determination of mercury vapors is based on supplying the AISI smoke sam- pler with Whatman No. 4 filter paper impregnated with a solu- tion of iodine in potassium iodide. The mercury trapped by the treated filter paper is then volatilized in a procedure that releases mercury as a vapor into a stream of air which passes through a sensitive to mercury vapor concentration as low as 0.005 ppm. This method would have value in an industrial hy- giene situation where automatic sampling at several locations is desirable for evaluating a mercury hazard. Details of the procedure and calibration are given. 28338 Krivan, V. A RADIO-RELEASE TECHNIQUE FOR DETERMINING TRACES OF ELEMENTS. Z. Anal. Chem., vol. 253:192-194, 1971. 9 refs. Trace elements are determined by fixing a small amount of an insoluble compound on a small disc of filter paper or other suitable material. The exchangeable ions of the compound are labelled with a radioactive isotope and are then replaced with ions of the trace element to be determined in a solution. After the labelled ions are released from the carrier into the solution by shaking, the activity of the species released is measured and compared with one or a series of standards processed in the same way. When the technique was used to determine trace amounts of mercury in the presence of several other ele- ments, radioactively labelled silver sulfide and filter paper discs were used. The results obtained are summarized and the advantages and limitations of the method are discussed. (Author abstract modified) 28354 Kaiser, Gerhard, Peter Tschoepel, and Guenther Toelg DECOMPOSITION WITH ACTIVATED OXYGEN IN THE DETERMINATION OF EXTREMELY LOW CONTENTS OF TRACE ELEMENTS IN ORGANIC MATERIALS. (Aufschluss mil aktiviertem Sauerstoff bei Bestimmung extrem niedriger Spurenelementgehalte in organischem Material). Text in German. Z. Anal. Chem., vol. 253:177-179, 1971. 4 refs. To determine elements in nanogram concentrations, the princi- ple of low temperature ashing was modified by using microwave frequencies for oxygen activation. Through contact with the oxygen plasma, the 1-gram sample burns slowly from top to bottom. The intensityof the microwave field and the position of the substance with respect to the plasma control the combustion process. The combustion products are dis- solved in 500 microliters of acid, separated, and analyzed. The method was tested with radio nuclides of the volatile elements selenium, zinc, and mercury. It can be also used to determine small concentrations of beryllium in the air. 28450 Polozhayev, N. G., V. V. Girina, and T. Ye. Laktionova MICROMETHODS OF DETERMINING HARMFUL SUB- STANCES IN ATMOSPHERIC AIR. (Mikrometody opredeleniya vrednykh veshchestv v atmosfernom vozdukhe). Text in Russian. Gigiena i Sanit., no. 8:15-20, 1951. Microanalytic nephelometric and colorimetric methods for determining a number of air pollutants are described. Detec- tion sensitivities are as follows: chlorine, 0.002 mg; hydrogen sulfide 0.0002 mg; sulfur dioxide, 0.002 mg; lead, 0.001 mg; and mercury, 0.00005 mg. Air microsamplers are also described. 28505 Kanagawa Prefecture (Japan) GAS CHROMATOGRAPHY AND ITS DEVICE EQUIPPED WITH ELECTRONIC ARRESTOR TYPE DETECTOR SPECIFIED IN REGULATIONS CONCERNED WITH EN- VIRONMENTAL POLLUTION STANDARDS. (Kogai no kijun ni kansuru kisoku ni kiteisuru denshihokakugata kenshutsuki tsuki gasu kuromatografuho to). Text in Japanese. Kanagawa Prefecture Official Bull., no. 70, 4p., Dec. 1, 1970. The standard procedures are presented for gas chromato- graphic and atomic absorption analysis of mercury, cadmium, zinc, copper, manganese, and iron. The bulletin stipulates the analytical procedures, including the preparation of test solu- tions, measuring methods, and calculating methods that are to be followed. The preparation of the cysteine acetate solution and methyl chlorida mercury standard solution, both reagents used in gas chromatography are presented. Hydrochloric acid L-cysteine (1 g), sodium acetate (775 mg), and sodium sulfuric anhydride (12.5 g) are dissolved in water to make 100 ml of solution. Benzene (pretreated by gas chromatography) is added to 100 mg of methyl chloride mercury to make a solution. This solution is removed into a flask and mixed with an additional amount of benzene to make 1000 ml of the solution. Of this, 10 ml is mixed with another additional amount of benzene to make 100 ml of solution. This dilution process should be re- peated twice to make the methyl chloride mercury standard solution. One ml of the solution equals 0.1ugCH3HgCl equals 0.0799ugHg. Preparation of the prescribed test and no-load test solutions is also given in detail. As to measurement procedures, micromilliters is taken from both the test and no- load test solutions by means of a micro-syringe and injected into the gas chromatograph respectively. The height of the peak is then measured for both solutions and taken as H and Hb respectively. The v micromililiters of the methyl chloride mercury solution is similarly injected into the gas chromato- graph. The height of the peak measured is then taken as Hs (100 mm or higher). When the value of H-Hb/Hs is higher than 1/20, the density C (ppm) of mercury in the form of methyl mercury in the solution can be calculated as: C(ppm) equals 0.1 times v times H-Hb/Hs times 5/V times I/quantity of the sample (ml) times 0.799. The procedures for atomic absorbent are also prescribed in similar detail. ------- 14 MERCURY AND AIR POLLUTION 28583 Valic, Fedor and Morris B. Jacobs ASSESSMENT OF MERCURY AIR CONCENTRATIONS IN A WORK ENVIRONMENT. Am. Ind. Hyg. Assoc. J., 26(3):266- 269, May-June 1965.12 refs. Ultraviolet photometry with mercury vapor meters and the iodine- iodide method were employed to determine mercury concentrations in a mercury mine and smelter in Yugoslavia. Mercury vapor concentrations, as obtained by ultraviolet photometry, were 0.1 to 2.0 mg/cu m in the mine and 0 to 2.0 mg/cu m in the smelter. Total mercury concentrations were 0.16 to 4.89 mg/cu m in the mine. The higher values obtained by the iodine-iodide method imply that monitoring solely with mercury vapor concentration devices may be inadequate for industrial hygiene purposes. 29343 Shirasawa, Tadao RESEARCHES ON ENVIRONMENTAL POLLUTION MEA- SUREMENT. (Kogai keisokuho ni kansuru kenkyu). Text in Japanese. Kokuritsu Kenkyujo no Kenkyu Seika (Researches of Government Research Inst.), no. 1, p. 291, Dec. 1969. 9 refs. In the field of air pollution, the method of monitoring dust density and particle size distribution is being established and control measure studied. The continuous monitoring of sulfur dioxides is studied, together with the effects of accompanying substances. Other harmful gases specified by the law, such as fluorine, are also investigated. In the area of water pollution, minute metal contents in industrial and mining effluents are being studied. Above all, a rapid and high sensitivity quantita- tive analysis of cadmium and mercury is aimed at. The results already obtained in the fields mentioned above were used as a basis of establishing Japanese Industrial Standards on dust and S02 measurements of combustion exhaust and also on the test method for plant effluents. The results are also utilized for the public nuisance countermeasure of factories. The Government Research Institute is cooperating with the local governments, municipalities, and private industries in the education of staffs dealing with public nuisances. 29480 Kuroda, Daisuke QUANTITATIVE ANALYSIS OF NO IN ATMOSPHERE - ON CHANGES IN SALTZMAN COEFFICIENT WITH CHANGE IN COMPOSITION OF SALTZMAN REAGENTS. (Zarutsu- man shiyaku no sosei ni yoru Zarutsuman keisu no hendo ni tsuite). Text in Japanese. Preprint, Japan Chemical Society, Tokyo, lp., 1971. (Presented at the Japan Chemical Society, Annual Meeting, 24th, Tokyo, March 1971, Paper 3336.) The relationship between the mixed reagents of Saltzman type and the Saltzman coefficient was measured. To sulfanilic acid 5 g/1, N-1-naphthylethylenediaminedihydrochloride (NEDA), 50 mg/1 and n-butylalcohol 10 ml/1 solution, (a) were added acetate 50 ml/1, (b citric acid 15 g/1, (c) tartaric acid 15 g/1, and (d) sulfuric acid 0.07 ml/1 respectively, and mixed reagents were prepared. To each of 7 ml of (a)-(d), 10 ng nitrogen diox- ide/10 min was absorbed, and the Saltzman coefficient was measured: (a) equals 0.91, (b) equals 0.87, (c) equals 0.90 and (d) equals 0.82. These figures varied with the concentration of NEDA, concentration of acids, velocity of air, and tempera- ture. The NEDA concentration had the greatest effect For in- stance, when NEDA concentration was 140 mg/1, in reagent (d), the Saltzman coefficient was 0.63. While the diazotation reagent was removed from reagents (a)-(d) and N02 was added, there was a reaction with NEDA. The reaction was a rapid one; three minutes after the addition of N02, 90% of the N02 was consumed and five minutes after, 99%. When this reaction took place while air was let in, a samll quantity of N02 and a great quantity of NO were emitted. The emission rate of NO to NO2 was: (a) equals 75%, (b) equals 76%, (c) equals 68%, (d) equals 93%. There was no NO2 present in the solution after the air was let through, and it looked slightly yellowish. Six ml of (a)-(d) reagents were taken into a bubbler with glass filter, and while air was let through 10 mg of N02 was poured in. The generation rate of NO was: (a) equals 4%, (b) equals 8%, (c) equals 7%, (d) equals 17%. The rate of coloring of N02 without air was: (a) equals 94%, (b) equals 92%, (c) equals 93%, and (d) equals 83%, and the loss was (a) equals 4%, (b) equals 8%, (c) equals 7% and (17%), cor- responding fully with the generation rate of NO. The coloring rate of NO2 corresponds to the Saltzman coefficient measured at first. The Saltzman coefficient is slightly lower because the absorption of N02 and addition of N02 are not carried out under identical conditions, so that there is a difference in the rate of reaction of NEDA-N02. A formula is obtained show- ing the concentration of NO2 is proportional to the degree of light absorption while letting the air through. Therefore, if a spectrum is made, using the figure measured by letting the air through a standard N02 solution, under the same conditions as when gas was sampled, the gas concentration can be ob- tained directly. The Saltzman coefficient varies as the NEDA- N02 reaction degree varies, with the different components of reagents and condition of sampling the gas. If measurement is made as above, the Saltzman coefficient can always be re- garded as 1. 29652 Krause, Leonard A., Richard Henderson, Henry P. Shotwell, and Dale A. Gulp THE ANALYSIS OF MERCURY IN URINE, BLOOD, WATER, AND AIR. Am. Ind. Hyg. Assoc. J., 35(5):331-337, May 1971. 7 refs. A procedure for the analysis of mercury in air, water, urine, and blood is described. It is dependent on the rapid release of mercury from digested specimens by using stannous chloride. The apparatus consists of an all-glass reaction vessel with a receiving funnel insert, connected to a water scrubber by means of a three-way stopcock. From the scrubber, glass fittings attach to an optical cell. A No. 1 Whatman filter is in- serted at one point to remove possible droplets of moisture, while aspiration is through coarse frits positioned to fit near the bottom of the flasks. All glass joints are ball-and-socket held by appropriate pinch clamps. A flow meter calibrated for rates between 1 and 4 liters/min is inserted downstream of the optical cell and before the vacuum pump. The Beckman Model K-23 double-scale mercury vapor test meter used in these ex- periments was altered by removing the grille, and mounting and positioning an all-glass optical cell 22.5 cm in length by 4 cm in diameter (fitted with inlet and outlet ports) and with quartz glass windows fused into the ends. Reagents and preparation of the standard curve are discussed. Concentra- tions of mercury below one part per billion can be detected ac- curately by increasing the aliquot of the sample. ' 29770 Nishimura, Kunio and Tohru Hirayama INVESTIGATION OF ACTIVATION ANALYSIS OF TRACE MERCURY IN GAS BY RADIOISOTOPE TRACER METHOD. Text in Japanese. Radioisotopes, 17(12):24-30, Dec. 1968. 12 refs. ------- C. MEASUREMENT METHODS 15 Most chemical determination methods for mercury in gas con- sist of the collection of mercury from a large volume of gas followed by an estimation of the amount collected. While the dithizone method has many advantages for small quantity determinations, impurities interfere with this method. A neutron activation analysis is suitable for small quantity deter- minations because of its high sensitivity. The radioisotope tracer technique and activation analysis are very useful for this method. These techniques were used to establish a method, and the results were compared to those by the dithizone and gas detector tube methods. The absorbent was a saturated chlorine solution. After a two hour absorption, four ml of concentrated aqueous nitric acid solution was added to the absorbent. Then the mixture was concentrated to eight ml and sealed in the quartz capsule. Irradiation was carried out in HTR with neutron flux of 1.2 times 10 to the llth power n/sq cm sec for five hours. After cooling for 100 hours, samples were taken from the capsule and determined by the non- destructive method. The sensitivity of this method was .0001 mg/cu m. However, the sensitivity can be improved by using irradiation with higher neutron fluxes and destructive methods. 30199 Larsson, Leif PORTABLE APPARATUS FOR DETERMINING MERCURY IN AIR. (Baebar apparat foer bestaemning av kvicksilver i luft). Text in Swedish. Svensk. Papperstid (Stockholm), 74(8):241-244, April 1971. A method for the determination of mercury in air with the aid of a light, portable device is described. The method is based on the absorption of mercury in an ampoule containing a carri- er impregnated with potassium permanganate solution acidified with sulfuric acid. The absorption of the mercury is quantita- tive. In a subsequent step the mercury is extracted from the ampoule and can then be determined by a suitable wet chemi- cal method. This method has been used for measurements in a chloralkali mill. (Author summary modified) 30510 Weissler, Alfred HAZARDS OF MERCURY: ANALYTICAL METHODS. En- viron. Res., 4(1): 53-61, March 1971. Methods have been developed in Sweden, Denmark, and Fin- land for the analysis of fish, other foods, and body tissues for total mercury content by neutron activation analysis, atomic absorption, spectrophotometry, and for methylmercury and other organomercurials by gas chromatography. These methods have been used successfully for extensive surveys of the extent of mercury contamination to determine the mag- nitude of the public health hazard. As a result of intensive development and extensive experience, the analytic methods used in Scandinavia and Finland are more sensitive and relia- ble than those of many laboratories in the United States. An increased adaptation and use of the Scandinavian procedures for determining submicrogram amounts of mercury is recom- mended. Analytic methods should be developed to distinguish and measure methylmercury, phenylmercury, dimethylmercu- ry, methoxyethylmercury, other organomercurials, and inor- ganic mercury compounds. Methods should also be developed for determining small concentrations of mercury and its com- pounds in air at a sensitivity of at least 1 ng/cu m. 30635 Kanno, Saburo MICROANALYSIS OF HEAVY METAL IONS IN THE EN- VIRONMENT AND THE PROBLEMS AT ISSUE. (Kan- kyochuno biryo jukinzoku no bunsekiho to mondaiten). Text in Japanese. Preprint, Society of Electro-chemistry, Tokyo (Japan), 34p., 1970. (Presented at the Society of Elec- trochemistry Industrial Public Nuisance Control Seminar, Tokyo, Japan, Dec. 2-3, 1970, Paper 7.) Representative methods for the microanalysis of mercury al- kyl, total mercury, cadmium, lead, copper, zinc, and arsenic, and lead in the atmosphere and gasoline were discussed by describing the test procedures for each method. For the analy- sis of mercury alkyl, gas chromatography was described, while listing the test chemicals, apparatus, preparation of the test sample, and the test procedures. Procedures for the microanal- ysis of total mercury by an atomic absorption analysis method were described, including the test apparatus, test chemicals, prepartion of the samples, and the testing. The additional re- marks included: How to prevent mercury from volatilizing during decomposition of the sample; quality of the absorption cell body, selection of desiccative, absorbency against quantity of stannous chloride solution added, effect of coexisting ions; calibration curve and reproducibility, plotting in chart, effect of temperature, recovery test of mercury, and arresting mercu- ry from air. Atomic absorption analysis procedures for the microanalysis of cadmium, lead, copper, and zinc were also described. For the microanalysis of arsenic, procecures of the silver diethyl thiocarbamate method were described. Atomic absorption analysis procedures for analysis of lead in the at- mosphere and gasoline were also given. Attached as enclo- sures were the Environmental Criteria Concerning Water Pol- lution and the Results of Analysis of the Tokyo Bay s Bottom Sludge. 31171 Jones, J. D., J. M. Rottschafer, H. B. Mark, K. E. Paulsen, and G. J. Patriarche DETERMINATION OF TRACES OF MERCURY IN BIOLOG- ICAL MATERIAL BY NEUTRON ACTIVATION. (Determina- tion de traces de mercure dans les systemes biologiques par activation de neutrons). Text in French. Mikrochim. Acta (Vienna), 1971(3):399-404, July 1971. 28 refs. A simple and fast method for the trace analysis of mercury in the blood, urine, tissue, and in the atmosphere by neutron ac- tivation is presented. The activated mercury, as an HgC14(2-) complex, is retained on an anion exchange resin which is counted directly. In the human blood, 19 ppb of mercury were measured with this method, in human hair 251 ppm. In fish, concentrations between 0.86 and 0.58 ppm were measured. The standard deviation in these concentration ranges was plus or minus 10%. (Author abstract modified) 31862 Malenfant, Arthur L., Stanley B. Smith, and Jae Y. Hwang MERCURY POLLUTION MONITORING BY ATOMIC AB- SORPTION UTILIZING A GAS CELL TECHNIQUE. Preprint, 8p., 1970. 11 refs. (Presented at th Eastern Analytical Symposium, 12th, Annual, Nov. 19, 1970.) The determination of mercury in fish, urine, and air samples by atomic absorption is reviewed. The system design, procedure, and typical results are presented. The methods pro- vide for the aeration, or evolution, of all the mercury con- tained in the original samples at the appropriate time. Only 2 manograms of mercury were required for 1% absorption at the ------- 16 MERCURY AND AIR POLLUTION peak height (0.0044 Abs). Interference in the methods centered around the presence of other easily reducible substances; selenium, as well as silver, gold, platinum, and palladium gave low results. The working curve of mercury was linear over several orders of magnitude in concentration. Under the condi- tions established, sensitivity was unaffected by sample volume as long as total volume was less than 10 -12 ml. The technique used was open- ended. To shorten analysis time, the mercury was reduced and then passed into the absorption cell. A reasonably constant flow rate of the gas through the absorp- tion cell was necessary to permit the profile of the mercury sample to reproduce. When the flow rate was too slow, the peak was broadened by diffusion; when it was too high, the sample was flushed through the absorption cell too rapidly for proper response and sensitivity was lost. Recovery experi- ments were performed to test the accuracy of the methods. 32476 Fukui, Shozo METHOD OF MEASUREMENT OF HARMFUL MATTERS IN AIR. (Kuki chu no yugaisei busshitsu no sokutei hoho). Text in Japanese. Bunseki Kiki (Analysis Instr.), 9(8):43-59, Aug. 1971.1 ref. Various measurement methods of harmful matter in the at- mosphere are examined. The orthotolidine method is described for chlorine determination, but there is no reliable method for a high incidence of pollution by chlorine gas. The neutral iodine potassium method for ozone and oxidants; the atom light absorption method for cadmium; the pyridine pyrazole and palladium quinolinol methods for hydrogen cyanide; the dithizone and atom light absorption methods for mercury; and the diazotation and Saltzman methods for nitrogen oxides are reviewed. The atom light absorption method is generally used for lead and zinc, since it is simple and accurate. Sulfur diox- ide is trapped with sodium chloride and mercuric chloride in solution; rosaniline formaldehyde is then added, and the mauve color is determined. Fluorides or hydrofluorine are measured by colorimetry, i.e., the lanter-alizarin complexion method. The 3-methyl-benzo-thiazolon- hydrazone method, which is most sensitive, and the chromotropic method are used to measure formaldehyde. Hydrogen sulfide is deter- mined by the methylene blue method, the molybdenum blue method, and the starch iodine method. The methylene blue method gives a unique reaction and involves less obstruction. A new method for trapping sulfides is examined. 32534 Fujinaga, Taichiro and Mutsuo Koyama ENVIRONMENTAL POLLUTION ANALYSIS - ESPE- CIALLY ON THE BASIC APPROACH TOWARD IT. (Kogai bunseki — Tokuni sono kangaekata ni tsuite). Text in Japanese. Bunseki Kiki (Analysis Instr.), 9(7):3-9, July 1971.13 refs. The basic characteristics of an environmental pollution analy- sis are discussed to clarify the basic approach required for an analysis that is usually of complex nature. Often organic and inorganic analyses must be performed simultaneously. Moreover, an analysis is more than simply qualitative or quan- titative. A qualitative analysis intended simply to detect a pol- luting element in air or water is often meaningless; very often the toxicity of a particular element depends on its chemical state. Therefore, microanalysis or, more properly, trace analy- sis is required to detect extremely toxic substances. If possi- ble, pollution should be continuously monitored and analyzed. The most dependable of current measuring devices are, theoretically, those employing ion-selective electrodes. Sampling, pretreatment, and measurement methods, together with measurable range and references, are tabulated for dif- ferent air pollutants. The methods are as follows: dust (par- ticulates), reflection factor or transmittivity measurement; sediment, gravimetric analysis; precipitation density, X-ray, light-dispersion, and gravimetric. X-ray microprobe analysis, fluorescent X-ray analysis, radiometry, emission spectrochemi- cal analysis, atomic absorption spectrochemical analysis, ab- sorption photometry, polarography, and gas chromatography are used for metals and other noxious elements. For carbon monoxide or carbon dioxide measurements, conductometry, coulometry, visible absorption photometry, and ultraviolet ab- sorption photometry are used. Turbidimetry, coulometry, and conductometry are used for hydrogen sulfide measurements. Coulometric titration and absorption photometry are used for oxidant measurements. Nitrogen dioxide or nitric oxide mea- surements use visible radiation absorption photometry. Or- ganics are measured by gas chromatography. Ammonia, al- dehydes, fluorine, phenyl acetate, mercury, tetraethyl lead and hydrogen cyanide use visible radiation absorption photometry. 32718 Fujiwara, Toshizo, Hideo Okashita, and Hiroshi Tsukiyama X-RAY FLUORESCENCE ANALYSIS OF SPECIMENS RE- LATED TO ENVIRONMENTAL POLLUTION. (Kogai kankei shiryo no keiko X-sen bunseki). Text i Japanese. Shimazu Hyoron (Shimazu Rev.), 28(2):87-91, June 1971. 5 refs. X-ray fluorescence spectrometry was used to analyze aqueous solutions, heavy oils, dusts, and various deposits, as environ- mental pollutants. The sensitivity was improved by enhancing the peak-to-background ratio, and the interference of bubbles in liquid samples was eliminated. Examples of determination of mercury and arsenic in an aqueous solution and of sulfur in heavy ofl are given. Dust was analyzed by adsorption and trapping on filter glass, with special attention to the background of the glass filter. A sample of mud accumulated at the bottom of the sea was dried and crushed for analysis; it contained barium, zirconium, bromide, lead, zinc, iron, and manganese. Detection sensitivity was improved by condensing the aqueous solution samples. 33042 Wainerdi, R. E., L. E. File, and W. E. KuykendaU NUCLEAR ANALYTICAL METHODS AND SYSTEMS FOR THE MEASUREMENT OF TRACE CONSTITUENTS IN THE ENVIRONMENT. International Atomic Energy Agency, Vien- na (Austria), Nucl. Tech. Environ. Pollut., Proc. Symp., Salz- burg (Austria), 1970, p. 459-480. 81 refs. (Oct. 26-30, Paper IAEA-SM-142a/28.) Nuclear and other methods of microanalysis can provide im- portant information about the normal and abnormal concentra- tion levels of trace elements in living systems and in their en- vironment. Activation analysis, especially using gathered sam- ples returned to well-equipped central laboratories, can pro- vide extensive elemental and isotopic information, especially when automated analytical spectrometers and computer data processing are employed. Isotope dilution, radiation reflection, and other nuclear methods can also provide additional impor- tant information about the normal levels of trace elements in the ecosystem and then* dispersion and about the magnitudes of environmental effects caused by such materials. Many materials of known toxicity, such as mercury, silver, bromine, and lead, lend themselves to microanalysis using neutron, charged particle (proton), or photonuclear activation analysis. A summary is given of trace analyses of aerosols, marine aerosols, particulates, rain and snow, water from rivers and bays,, tissues, fish, and tobacco, performed by neutron activa- tion analysis. ------- C. MEASUREMENT METHODS 17 33277 Asperger, Smiljko and Ivo Murati DETERMINATION OF MERCURY IN THE ATMOSPHERE. SUBMICROANALYTICAL DETERMINATION OF MERCU- RIC ION IN BROMINE AND CHLORINE WATER BASED ON ITS CATALYTIC ACTION. Anal. Chem., 26(3):543-545, March 1954. 12 refs. Mercuric ions in bromine and chlorine water were determined by spectrophotometric estimation of the violet complex produced by the catalytic action of the ions on potassium fer- rocyanide and nitrosobenzene in aqueous solution. Since the catalytic activity of the mercuric ions was measured without disturbance, the determination of mercury in the atmosphere can be reduced to a determination of mercuric ions. A statisti- cal treatment of the experimental results shows that the rela- tive standard error of the proposed method is about 9.5% when the concentration of mercuric ions in the solution is 0.000001 to 0.000005 mole/liter. 33278 Quino, E. A. DETERMINATION OF DIBUTYL MERCURY VAPORS IN AIR, Am. Ind. Hyg. Assoc. J., 23(3):231-234, May-June 1962. 10 refs. Dibutyl mercury vapors in air can be collected in 99% isopropyl alcohol in two impingers in series. Determination is made by bromination followed by reaction with ditolyl mercu- ry and dithizone In the laboratory, 2-12 micrograms can be determined. A field procedure determines concentrations as low as 0.5 mg/cu m. Eighteen atmospheric samples containing organic mercury can be analyzed by the bromination method in one hour or less in contrast to the two to three days required by traditional methods. (Author abstract modified) 33338 Herman, Eleanor APPLICATIONS OF ATOMIC ABSORPTION SPEC- TROMETRY TO TRACE METAL ANALYSES OF TOX- ICOLOGICAL MATERIALS. Progr. Chem. Toxicol, vol. 4:155-178, 1969.44 refs. The instruments, principles and procedures used in atomic ab- sorption spectrometry are described. This method has become an important tool for the determination of various metals dur- ing lexicological investigations and is the routine technique for analyses of lead, cadmium, thallium, mercury, and arsenic. Atomic absorption spectrometry can be used to determine the presence of lead, mercury, copper, gold, and iron in blood, urine, and body tissue. The trace analyses of cadmium, thalli- um, arsenic, antimony, bismuth, cobalt, chromium, lithium, manganese, nickel, tin, and zinc are also explained. 33886 Stitt, Fred and Yoshio Tomimatsu SENSITIZED PAPER FOR ESTIMATION OF MERCURY VAPOR. AnaL Chem., 23(8): 1098-1101, Aug. 1951. 7 refs. (Presented at the American Chemical Society, 115th Meeting, San Francisco, Calif., March 27-April 1,1949.) In the course of developing a portable instrument for measur- ing small amounts of ethylene in air by use of hot mercuric oxide as an oxidizing agent, sensitized paper suitable for de- tecting and estimating mercury vapor was studied. A paper both uniform and reproducible (plus or minus 5%) in its response to mercury vapor and relatively insensitive to tem- perature was prepared by a method which impregnates the paper with only selenium as the reactive material. Preparation of the paper involved soaking it in potassium selenocyanate solution, draining, and exposing it to a hydrogen chloride at- mosphere. The quantity of reactive material per unit area of paper is easily controlled by adjusting the concentration of selenocyanate. The properties of this paper were compared with those of selenium sulfide papers prepared by three dif- ferent procedures, when used in the form of a strip over which a fixed volume of sample is slowly passed. A tempera- ture of 65 C or above was required for maximum reactivity of the mercury vapor with the reactive material on each of the sensitized papers. The length of blackening of selenium paper is directly proportional to the mercury vapor concentration and is insensitive to paper temperatures between 65 and 200 C. Both selenium and selenium sulfide papers retained their original calibration after a year of storage at room temperature in the dark. (Author abstract modified) 34388 Ulrich, William F. SOLUTIONS FROM SPECTRA. Ind. Res., 13(6):52-55, June 1971. Aside from the countless routine colorimetric and spec- trophotometric methods for water analysis, spectroscopic techniques are applied to a number of difficult and often spec- tacular problems. At present, the determination of trace mer- cury is best performed by the so-called flameless atomic ab- sorption technique. For analysis, the water sample is treated with a reducing agent that converts mercury into the atomic state. Then, a gas purge sweeps the mercury, as a vapor, into a gas cell where it is measured by its absorption at 253.7 nm. Phenolics are commonly determined as a group either by a colorimetric procedure or by their own natural absorbance in the ultraviolet. Total organics are first broken down to form carbon dioxide and then determined using a non-dispersive type analyzer. Determination of the chlorinated pesticides, biological species, ozone, and various drugs is also discussed. One promising method for the measurement of bacteria and viruses is based on the bioluminescence observed when adenosine triphosphate reacts with hydroluciferin in the presence of the enzyme, luciferase. An interesting new technique for detecting morphine involves use of electron spin resonance spectroscopy and spin labels. 34432 Christian, C. M., II and J. W. Robinson THE DIRECT DETERMINATION OF CADMIUM AND MER- CURY IN THE ATMOSPHERE. Anal. Chim. Acta, 56(3):466- 470, Oct. 1971. 6 refs. Cadmium and mercury in laboratory air were directly deter- mined by passing air samples through an injection furnace, by passing injector effluent through a nitric acid scrubber, and by analyzing the scrubber solutions by atomic absorption. The concentrations of the metals in the ambient atmosphere were then obtained by comparison of absorption measurements with calibration curves. The sensitivity of the method was 1.2 microgram/cu m and 0.02 microgram/cu m for mercury and cadmium, respectively. No evidence of interference by the chemical form of mercury was detected for the compounds studied. Chloro-compounds caused changes in percentage ab- sorption, but the concentrations of organic chlorine com- pounds used in interference studies were higher than normal ambient concentrations. ------- 18 MERCURY AND AIR POLLUTION 34641 Carter, J. A. and J. R. Sites DETERMINING PPB MERCURY CONCENTRATIONS USING A SPARK-SOURCE MASS SPECTROMETER SAM- PLE CHANGER. Anal. Letters, 4(6):351-355, June 1971. 2 refs. A probe-type sample changer has been added to a spark- source mass spectrometer for the rapid determination of ppb levels of mercury by isotope dilution. The initial purpose for adding the changer was to run large sets of fish and environ- mental samples for their mercury content as rapidly as possi- ble, but the technique has also been used for determining cad- mium, mercury, and zirconium in samples of air, water, and urine. Transmittances of the appropriate lines on the photoplate are read on a microdensitometer; calculations are made using a short computer program that applies the emul- sion calibration curve and corrects for interfering relative isotopic abundance. (Author abstract modified) 34808 Moffitt, A. E., Jr. and R. E. Kupel A RAPID METHOD EMPLOYING IMPREGANTED CHAR- COAL AND ATOMIC ABSORPTION SPEC- TROPHOTOMETRY FOR THE DETERMINATION OF MER- CURY IN ATMOSPHERIC, BIOLOGICAL, AND AQUATIC SAMPLES. At. Absorption Newslett., 9(6):113-118, Nov.-Dec. 1970. 15 refs. (Presented at the Society for Applied Spec- troscopy, Annual Meeting, 9th, New Orleans, La., Oct. 5-9, 1970.) A quantitative procedure is described for determining sub- microgram quantities of mercury in atmospheric, biological, and aquatic samples by atomic absorption spectrophotometry. In the analysis of biologic and water samples, organically bound mercury is oxidized with nitric acid, and all mercury present is reduced to the elemental state with stannous chloride. The liberated mercury is driven by an air current through specially impregnated charcoal for approximately two minutes. A glass tube packed with impregnated charcoal is used to take integrated atmospheric samples. A standard volume of 10 liters is sampled and the tube is capped and returned to the laboratory for analysis. All charcoal samples are analyzed directly for mercury with an atomic absorption sampling boat assembly. Measurement of the recorder peak height is used to determine the quantity of mercury present. The total analysis time is less than five minutes for aqueous samples, and the minimum detectable quantity of mercury is 0.02 microgram. After collection of mercury, the charcoal sam- ples may be stored for later analysis. (Author abstract) 34815 Barnes, E. C. THE DETERMINATION OF MERCURY IN AIR. J. Ind. Hyg. ToxicoL, 28(6):257-261, Nov. 1946. 10 refs. (Presented at the American Industrial Hygiene Association, Annual Meeting, 9th, Chicago, 111., April 9-11, 1946.) The maximum allowable concentration of mercury has been established as one milligram per ten cubic meters of air. To determine quantitatively the concentration of mercury in air, the sampling procedure and analytical methods must be such that the sample is truly representative of actual working condi- tions at the location tested, and the quantity of mercury col- lected in less than one hour should be such that the analytical method employed will reveal, with a satisfactory degree of ac- curacy, quantities of mercury between approximately .03 and 10.0 mg per cu m of air. A method is described for the deter- mination of the total mercury concentration in the air, whether present as dust or vapor. It employs the standard impinger for collection of the samples and a simple colorimetric analysis for the determination of mercury by a slight modification of the method of Polejaeff. A potassium iodide-iodine solution is used as the collection medium in the impinger. 34939 Gaynullina, E. T. and R. N. Nurmukhametov POSSIBILITIES OF LUMINESCENT ANALYSIS OF INDUS- TRIAL AIR POLLUTION. Zh. Vses. Khim. Obshchestva im. D. I. Mendeleeva, 15(5):506-513, Oct. 9, 1970. 72 refs. Trans- lated from Russian in: Atmospheric studies at Chemical Enter- prises USSR, p. 53 -67, March 9, 1971. Joint Publications Research Service, Washington, D. C. NTIS: JPRS-52566 Organic compounds are distinguished by their luminescence properties. Some have both fluorescence and phosphorescence. These include aromatic condensed hydrocar- bons and their derivatives. Others reveal only fluorescence, in- cluding many compounds with a chain structure used as lu- minescence additives in scintillators (polyphenyls, arylethylenes, aryloxazols, and arylxadiazols). The third group exhibits only phosphorescence (many aromatic aldehydes, ketones, quinones, and N-heterocyclic compounds). Brightly fluorescent compounds are easy to analyze by measuring their fluorescence (fluorimetry) and brightly phosphorescent com- pounds by their phosphorescence (phosphorimetry). Only the former is widespread in luminescent analysis, although the prospects for the latter are increasing. The dependence of lu- minescence on molecule structure is discussed and compara- tive data are presented on the sensitivity of luminescent and colorimetric analyses for a number of compounds for example, (benzanthrone, carcinogens, oil, beryllium, mercury, amines, acetylene, phosgene, hydrogen sulfide, mercaptans). The lu- minescent method has advantages in both sensitivity and speed: maximum optical density with the colorimetric method is achieved in 30-40 min while maximum glow intensity with the luminescent method is achieved in one to two minutes. Although most luminescent analyses are performed with laboratory instruments, automatic gas signal devices using lu- minescent and chemiluminescent reactions have been developed. Among the luminescent instruments are fluorescent devices for detecting toxic organophosphorus compounds and hydrogen sulfide. ------- 19 D. AIR QUALITY MEASUREMENTS 04986 J. Cholak THE NATURE OF ATMOSPHERIC POLLUTION IN A NUMBER OF INDUSTRIAL COMMUNITIES. Proc. Natl. Air Pollution Symp., 2nd, Pasadena, Calif., 1952. pp. 6-15. An expanded electrostatic precipitator sampling program for investigating certain more general characteristics of the air pol- lution of Cincinnati was resumed in 1946. Starting with twelve sampling sites, the program was gradually enlarged in scope during the period 1946-51 to include the measurement of a number of gaseous pollutants as well as determinations of the composition of the paniculate matter suspended in the air. Various other pollutants were included in the investigation as facilities for collecting samples and techniques for their analy- sis were improved. During this same period opportunities presented themselves for the study of pollution problems of a number of other communities. Since these data, obtained by comparable methods, are of interest in showing the similarities and differences in the character of the atmospheric pollution of various communities, it is our purpose (1) to describe the nature of the air pollution of Cincinnati, (2) to compare the Cincinnati data with the findings obtained during the course of shorter studies in other communities, and (3) to amplify the picture with results of observations reported in the literature. In making such use of the data of other investigators the analytical approach has been given careful consideration in order to make certain that comparable data were being dealt with. 06671 Z. Z. Bruskin EXPERIMENTAL STUDY OF WORKING CONDITIONS AND ATMOSPHERIC AIR POLLUTION WITH ETHYLMERCU- RIC CHLORIDE DURING TREATMENT OF CEREAL GRAINS IN THE OMSK OBLAST . U.S.S.R. Literature on Air Pollution and Related Occupational Diseases, Vol. 7, 264- 71, 1962. (Gigiena Truda i Prof. Zabolevaniya,) i (5), 20-4 (1958). Russ. (Tr.) CFSTI: 62-11103 A study was undertaken to evaluate the health hazards in- volved in the application of ethylmercuric chloride (EMC) to cereal grains. Concentrations of EMC were measured in vari- ous working zones and in the open air at varying distances from the operation. The results of these measurements are tabulated; the effectiveness of a respirator is reported; and recommendations are made to improve the protection of the workers. 07649 Thillie7, Georges DETERMINATION OF TRACES OF LEAD IN AIR BY ATOMIC ABSORPTION SPECTROMETRY. Anal. Chem., 39(4):427-432, April 1967. 6 refs. Direct supply of air samples from the atmosphere to the burner of an atomic absorption spectrophotometer allows the rapid determination of certain elements such as lead. The method described has been in service in the tetraethyl-and tetramethyllead production installations of our Paimboeuf plant, since November 1965, with general satisfaction. It al- lows continuous monitoring of the lead concentration in the environments where the organic derivatives of this element are manufactured or handled. It permits the detection of slight leaks in the apparatus, and improves safety. The limit of de- tection is .000001 gm/cu m. The sensitivity and accuracy are of the same order as those of discontinuous methods, which require from some hours to a day per analysis. This method is also applicable to determination of other elements in air, par- ticularly mercury. (Author's summary) 12065 Williston, S. H. MERCURY IN THE ATMOSPHERE. J. Geophys. Res., 73(22):7051-7055, Nov. 15, 1968. 3 ref. High-sensitivity mercury-vapor analysis has been automated to provide a continuous monitoring of Hg in the earth's at- mosphere over the last 2-year period. In the San Francisco Bay area (Los Altos) winter concentrations range from slightly over 1/2 to 25 nanograms of Hg per cubic meter of air. Summer concentrations range from slightly over 1 to 50 nano- grams per cubic meter. Concentration of Hg seems to depend primarily on wind direction, wind speed, and seasonal tem- perature variations. Numerous other variables also affect it It is shown that high Hg levels always coincide with high smog levels. (Author's Abstract) 20790 Brar, S. S., D. M. Nelson, J. R. Kline, P. F. Gustafson, E. L. Kanabrocki, C. E. Moore, and D. M. Hattori INSTRUMENTAL ANALYSIS FOR THE TRACE ELEMENTS PRESENT IN CHICAGO AREA SURFACE AIR. J. Geophys. Res., 75(15):2939-2945, May 20, 1970. 4 refs. On April 4, 1968, surface air particulates were collected on cellulose fiber filters simultaneously at 22 different locations throughout the Chicago metropolitan area. A 1-sq cm portion of each filter was irradiated with thermal neutrons in a CP-5 research reactor. The neutron-induced nuclides were analyzed by gamma-ray spectrometry with 10.2 cm by 10.2 cm (4 in. by 4 in.) and 7.6 cm by 7.6 cm (3 in. by 3 in.) cylindrical NaI(Tl) crystals and a 400-channel analyzer. By varying the neutron flux and the time of irradiation, twenty trace elements in the surface air were detectable by purely instrumental means. The following elements, listed in decreasing order of concentration, were present: iron, chlorine, aluminum, zinc, manganese, sodi- um, bromine, vanadium, chromium, antimony, mercury, selenium, cerium, silver, cobalt, lanthanum, scandium, cesium, and europium. The average concentrations varied from 2400 to 0.12 mg/cu m air. Calcium concentrations in air were not quan- titated. (Author abstract modified) 26557 ANNUAL REPORT OF PUBLIC HAZARDS. I. 1969. (Shows 44 nendo. Kogai no jokyo ni kansuru nenji hokoku. (I)). Text ------- 20 MERCURY AND AIR POLLUTION in Japanese. Kankocho Kogaisenmon Shiryo (Public Nuisance Gaz.), 5(4):10942, 66, June 1970. The present state of public hazards in Japan, with special referenc to water and air pollution, were reviewed. In some ci- ties the degree of pollution remained high and there were areas where a tendency to increase was evident, and where urgent countermeasures were necessary. Since the enforcement of minimum standards for exhaust gases and promulgation of countermeasures in the form of low-sulfur fuel in 1969, some amelioration was observed in areas with a previous history of pollution by oxides of sulfur. In the case of precipitated soot and dust, there has been generally, if anything, a tendency for the amount to decrease over the past few years due to the in- stallation of dust and soot collectors and the transition from coal to fuel oil. Recently, however, certain areas have again shown an apparent tendency to increase. A similar tendency was exhibited by suspended soot and dust. Oxidants which are produced by reaciton between sunlight and the oxides of nitroge released into the air following the combustion of hydrocarbons in automobiles stimulate the eyes by a com- plicated mechanism and are also harmful to plants. The re- markably high levels of water pollution in recent years were noted, together with their effect on the nation's health, the en- vironment, and certain industries. With regard to health fac- tors, the Minamata and Itai-itai syndromes were reported. The former was caused by the accumulation of methyl mercury through the consumption of affected fish, and the latter by cadmium in the effluent from mines. With regard to the other factors, water pollution, including that of city drinking-water supplies, industrial water supplies, and agricultural water sup- plie involving corrosion of the outer hulls of vessels and jetties were reported. Effects on the public health factors of the en- vironments of cities and the decrease in visibility in cities were also noted. 27188 Dei, Sadao, Shunichi Yoshinaga, Tanetomo Nishimura, and Masaru Matsumoto THE CONTENTS OF HEAVY METALS IN THE AT- MOSPHERIC DEPOSITS IN KITAKYUSHU CITY. (Kitakyushushi niokeru koka baijin chuno kinzok seibun nit- suite). Text in Japanese. Kyushu Sangyo Daigaku Kogakubu Kenkyu Hokoku (Kyushu Ind. Coll. Res. Rept.), vol. 7:1-26, June 1970. 4 refs. Quantitative analysis of heavy metals contained in atmospheric deposits was performed in February, October, and December, 1968, at 30 locations distributed in Kitakyushu city. Man- ganese, zinc, nickel, cobalt, copper, chromium, cadmium, and lead analyzed by atomic absorption, first by way of total burner consumption and later by laminar flow burner. The at- mospheric deposit contained a large amount of Zn, Pb, titani- um, and Mn (2534-1434 ppm), medium quantity of Cu, vanadi- um, and Cr (448-240 ppm), and a little Ni, Co, and Cd (66.9-8.9 ppm). The solubility of the metals, the ratio of the amount dis- solved to total was large for Cu, Zn, and Mn (64.05-26.17%), small for Ni and Pb (1.10-1.05%), and nearly zero for Ti, Co, Cr, V, and Cd. The proportion of the metal components in the deposit varied from ward to ward, but differed very little among industrial, commercial or residential areas. On the average, coal ashes contained a large amount of Ti. Petroleum ashes contained an especially large amount of V, Zn, Ni, and Cu. Since neither coal nor petroleum ashes contain Mn or Pb, these metals in the deposit were considered to come mainly from plants and automobiles. The fact that the petroleum ashes contained a much larger quantity of metals, except Ti, than the coal indicated the future increase of metal contents with the changeover to petroleum from coal. In the future, dusts will be collected from other sources, and tin, beryllium, arsenic, and mercury will also be determined. 29490 MERCURY IN THE AIR. Environment, 13(4):24, 29-33, May 1971. 9 refs. An airborne survey has revealed that coal-burning power plants, municipal incinerators, and several industrial plants are emitting large quantities of mercury vapor. Measurements were made of air taken from the plumes discharged from smokestacks with the Barringer mercury spectrometer mounted on a helicopter. Calculations were then made to esti- mate the total quantities of mercury vapor being emitted from these sources. Eight power plants accounted for a total of 8700 pounds per year of mercury emitted into the atmosphere, while the four incinerators emitted an estimated total of 12770 pounds per year. 29545 King, E. INTERPRETATION OF RESULTS OF EXAMINATION OF AIR. (Interpretations des resultats de prelevements d at- mosphere). Text in French. Lab. Central des Services Chimiques de L Etat, Paris (France) and Inst. National de Securite pour la Prevention des Accidents du Travail et des Maladies Professionnelles, Paris (France), Colloq. Securite So- ciale Serv. Prevent., 3rd, Paris, France, 1955, p. 27-33. 7 refs. (Nov. 3-5.) Caution is required in interpreting individual readings of pollu- tant concentrations in manufacturing shops. Three graphs represent variations in the atmospheric mercury vapor concen- tration measured between 10 am and 5 pm in a repair shop where small quantities of mercury are used. In the first case, small concentrations were recorded up to 2 pm, apparently due to little repair work being done. In the afternoon the con- centration of the pollutant rose to a peak value of 400 micro- grams of mercury per cu m of air, compared to an average of 100 micrograms in the morning. A second case under compara- ble conditions, shows the effect of opening and closing a small window. The third case reflects the conditions in a similar shop, equipped with force air ventilation, where Hg pollution unexpectedly occurred at higher rates than with plain window ventilation. In another case involving chronic intoxication by cadmium in a shop which produces a copper-cadmium alloy, the relative skill of the furnace operator was responsible for variations in the atmospheric concentration of cadmium oxide. The emission of fumes from the furnace was usually restricted to about 10 minutes per hour. A thermal precipitator was used, supplemented by apparatus with a soluble filter for finding the average dust concentration per shift. Another device for con- tinuous recording incorporates a filter paper band transported at constant speed under an orifice through which the air streams and then passes through the filter. Subsequent visual inspection of the filter permits the approximate interpretation of the relative variations as a function of the time of the day and of the workers activities. 30511 Thompson, Jack E. HAZARDS OF MERCURY: AIRBORNE MERCURY. En- viron. Res., 4(l):50-53, March 1971. Very little is known about the quantitative or qualitative aspects of mercury in the atmosphere, since only a few mea- surements have been made of mercury concentrations in the ------- D. AIR QUALITY MEASUREMENTS 21 air. Mercury may occur as a vapor, an aerosol, or both; it may also be present in the organic or inorganic form. The mercury levels found in fish from several lakes in Sweden and Finland were relatively high, with no known industrial discharges into the lakes. It was, therefore, assumed that the mercury comes primarily from the atmosphere. A partial model of the move- ment of mercury among the air, soil, and water components of the environment is presented The levels of atmospheric mercu- ry in the United States, which have been observed from limited ambient air sampling, are below the threshold limit values of 0.1 mg/cu m for metallic vapor and inorganic com- pounds and 0.01 mg/cu m for organic mercury. It is recom- mended that the chemical and physical forms of mercury in the air be determined. The quantitative and qualitative trans- formation aspects of mercury and its compounds should also be determined. Studies should be made on the amount of mer- cury emitted to the air from soil, water, vegetation, and man- made sources. 31112 Mayz, Eusebio, Morton Corn, and Gene Barry DETERMINATIONS OF MERCURY IN AIR AT UNIVERSI- TY FACILITIES. Am. Ind. Hyg. Assoc. J., 32(6):373-377, June 1971.20refs. A Beckman Model K-23 mercury vapor meter was modified to include a charcoal trap to remove interfering organic vapors and a membrane filter to remove aerosols. During sampling of an unknown atmosphere, the sample bypassed the filters and entered an optical absorption cell which replaced the more common external grill supplied with the standard instrument. The modified instrument was used to measure mercury in air concentrations at sites within a large university complex. General air concentrations were found to be in the range 0.010 to 0.035 mg/cu m; several breathing zone areas were as- sociated with concentrations in excess of the recommended threshold limit value of 0.05 mg/cu m. Educational and surveil- lance programs are urged to minimize the risk assumed by per- sonnel using mercury. (Author abstract modified) 31371 Japan Environmental Sanitation Center, Tokyo REPORT OF A SURVEY ON ENVIRONMENTAL QUALITY IN THE DISTRICTS UNDER POLLUTION CONTROL PRO- GRAM. (Kogai boshi keikaku sakutei chiiki kankyo chosa hokokusho). Text in Japanese. 136p., March 1969. Air pollution, water pollution, offensive odors, and noise in the Chiba/Ichihara, Yokkaichi, and Mizushima districts were surveyed in 1968. Average daily sulfur dioxide concentrations were 0.02 ppm in the Chiba/Ichihara district and 0.01-0.05 ppm in the Yokkaichi district. Values measured at 28 points in the latter district varied according to direction, wind velocity, and geographical conditions. The mean value of suspended dusts in the Chiba/Ichihara district was 151.6 microgram/cu m, but values as high as 256-1649 microgram/cu m were measured in Yokkaichi. Here iron contents of 105.8 microgram/cu m and 334.0 microgram/cu m were found. Organic sulfur compounds such as dimethyl sulfide (1.0 ppb) and isoprophyl mercaptan (3.5 ppb) were also detected in Yokkaichi City. Nitrogen ox- ides and hydrogen chloride values in th Chiba/Ichihara district were 0.003-0.025 ppm and 0.01-0.06 ppm, respectively. Fluorine compounds were not detected. Maximum chlorine, formaldehyde, and hydrogen sulfide concentrations of 0.07, 0.057, and 0.005 ppm, respectively, were measured in the summer. In the Mizushima district, two methods were applied to determine offensive odors from petroleum complexes: odorimetrv and gas chromatography. With the latter measuring 0.006-0.012 ppm of ethyl acetate. The gas was irritative with a sour and sweet odor. Biological oxygen demand measurements and analysis of bottom soil in Yokkaichi harbor, and 0.20-1.28 milligram/dry kg of mercury in bottom soil of the drainage at a chemical factory in the Mizushima district. Noise levels in re- sidential areas were below or only a little higher than the stan- dard, but noise levels along heavily travelled roads were sig- nificantly high. 32912 Kanagawa Prefectural Government (Japan) KANAGAWA PREFECTURAL AIR POLLUTIONS SURVEY AND RESEARCH REPORT. (Kanagawa-ken taiki osen chosa kenkyu hokoku). Text in Japanese. Rept. 13, 109p., Feb. 1971. 49 refs. Reports were compiled on surveys conducted in Kanagawa Prefecture. Atmospheric concentrations of dust, sulfur diox- ide, nitrogen dioxide, carbon monoxide, carbon dioxide, lead, chlorine, sulfur trioxide, nitrogen oxides, and automobile ex- haust gases were measured. Air pollution and meteorological conditions in the Tokyo-Yokohama industrial belt, and effects of air pollution on humans and trees were also studied. En- forcement procedures based on the Air Pollution Control Law are examined. Air pollution forecasting and some examples of control methods are discussed. Research reports on mercury determination by the atom light absorbing method, nitrogen oxides measurement, gas sampling, and measuring carbon monoxide by detection tubes are included. ------- 22 E. ATMOSPHERIC INTERACTION 23744 Massachusetts List, of Tech., Cambridge STUDY OF CRITICAL ENVIRONMENTAL PROBLEMS (SCEP). SUMMARY OF MAJOR FINDINGS AND RECOM- MENDATIONS. Preprint, 17p., July 31, 1970. The results of a study of environmental problems the cumula- tive effects of which are so large and prevalent on ecological systems that they have world-wide significance are reported. Of primary concern are the indirect effects of pollution on man through changes in climate, ocean ecology, or in large ter- restrial ecosystems. Several specific problems are considered, and recommendations to solve them are given. The com- bustion of fossil fuels increases the total supply of carbon dioxide. Direct climate change in this century resulting from CO2 is small, but the long term potential consequences are grave. Particulates in the atmosphere change the heat balance of the earth. These particles can be released naturally or from man-made sources. The effects of jet planes in the strato- sphere, particularly in terms of cloud formation and tempera- ture rise, are discussed. The effects of toxic pesticides on crops and complex ecosystems are studied. The concentration of these pesticides in marine organisms is a very serious problem. Mercury and other toxic heavy metals enter the en- vironment through industrial processes and biocides. The ef- fects of oil spills on the ocean are discussed. The eutrophica- tion of waters through extensive use of nitrogen and phosphorus fertilizers leads to oxygen depletion and fish-kills. The amelioration of the massive environmental problems that exist depends upon social and political changes in the society. 23809 Wheeler, Fred THE GLOBAL VILLAGE PUMP. New Scientist, 48(721):10- 13, Oct. 1, 1970. During July 1970, some 40 scientists from all the relevant disciplines and about 60 part-time advisers and consultants were at Williams College in Massachusetts reviewing all the literature and statistics that could be gathered concerning pol- lution and the changing environment. The Study of Critical Environmental Problems (SCEP) had the job of deciding which pollution effects are indeed global, what measurements and research are needed to repair the gaps in our understand- ing of these global effects, and to provide some guidance as to what kind of practical action may be needed. Global ecological influences were DDT and other toxic persistent pesticides, mercury and other toxic heavy metals, oceanic oil pollution, and excessive nutrients in rivers, estuaries and coastal waters in general. At the beginning of the industrial revolution, the carbon dioxide content of the atmosphere was probably about 280 parts per million, while it is now 321 ppm and rising at an annual rate of 0.7 ppm. SCEP recommendations include syste- matic study of the partition of CO2 between the atmosphere and oceans and the biomass, study of changes in the total mass of living matter an decaying products, and improvements in our estimates of future fossil-fuel burning. Climatic effects of carbon dioxide are discussed, as well as the participate in- terference from the emission of sulfur dioxide in the com- bustion of fossil fuels. If atmospheric C02 rises, less heat escapes from the earth and the overall temperature rises, while the small particles of S02 absorb as well as scatter the incom- ing solar radiation. SCEP encourages the development of com- puter models of the atmosphere, as well as the study of the optics of small particles and their transport. More needs to be known about the stratosphere, particularly in the event of su- personic transport. Ecosystems are mentioned and the identifi- cation of potential global pollutants. 26697 Jenne, E. A. ATMOSPHERIC AND FLUVIAL TRANSPORT OF MERCU- RY. In: Mercury in the Environment. Geological Survey, Washington, D. C., Profess. Paper 713, p. 40-45, 1970. 31 refs. Near-surface mercury-bearing mineral deposits, industrial wastes and exhausts, and applications of agricultural chemicals serve locally to increase the mercury of levels of streams, lakes, and impoundments. Mobility of mercury is greatly enhanced by a property which is unique among the metals, namely the relatively high vapor pressure of the metallic state and, to a lesser extent, certain of its compounds. The satura- tion level of mercury in air in equilibrium with metallic mercu- ry increases logarithmically with increasing temperature. The high degree of undersaturation of the soil air directly over a mercury deposit probably represents the faster rate of exchange of soil air with atmospheric air as compared to the rate of evaporation of mercury and its volatile compounds. Oxidation of mercury-bearing sulfide ores presumably results in the formation of both mercuric and mercurous ions. Rainfall and leaching convey a part of the atmospheric mercury to streams and other waters. Mercury appears to be strongly sorbed by soils and sediments, for which various indications are cited. Less rapid reactions that may remove mercury from water and soil solutions are the possible isomorphous substitu- tion for barium and, to a lesser extent, for calcium. Little in- formation is available on the cation exchange properties of mercury. At trace concentrations, mercury is rapidly taken up by micro-crystalline oxides, peat moss, and soils. Solute mer- cury introduced into streams is quickly transformed to the par- ticulate form by reduction to metallic mercury, by sorption on the inorganic sorbates, by complexation with nonviable par- ticulate organics, and by sorption and ingestion by viable biota. Pollution of waters is mentioned. 28465 Massachusetts Inst. of Tech., Cambridge • SUMMARY OF FINDINGS AND RECOMMENDATIONS. In: Man's Impact on the Global Environment. Cambridge, Coloni- al Press, 1970, p. 3-36. The findings and recommendations of a number of month-long study/discussion work groups held at Williams College, Wil- liamstown, Mass, in 1970 are presented for a series of problems concerned with the indirect effects of pollution on man through changes in climate, ocean ecology, or in large ter- restrial ecosystems. The global environmental problems stu- ------- E. ATMOSPHERIC INTERACTION 23 died were: climatic effects of increasing atmospheric carbon dioxide, of the atmospheric particle load, and of tropospheric and stratospheric contamination by sub- and super-sonic air- craft; the ecologic effects of nutrients in estuaries, lakes, and rivers; and the ecologic effects of petroleum in the oceans, of DDT and other toxic persistent pesticides, and of mercury and other toxic heavy metals. The recommendations emphasize the need to gather more information about pollution of the planet in order to understand the impact of man's activities and to make possible reliable projections of future conditions as a basis for remedial action. Global problems do not necessarily require global solutions, and most corrective action will probably have to be taken at the national, regional, and local levels, but societal values will need to be reassessed in any at- tempt to resolve the conflict between economic activity and its environmental effects. ------- 24 F. BASIC SCIENCE AND TECHNOLOGY 06648 Matsak, V. G. VAPOR TENSION AND VAPORIZATION OF SUBSTANCES EM MOVING AIR. Gigiena i Sanit, (8) 35-41, 1958. In: U.S.S.R. Literature on Air Pollution and Related Occupational Diseases, Translated from Russian by B. S. Levine, Vol. 8, 1- 9, 1962 CFSTI: 62-11103 The purpose was to place at the disposal of engineers and hy- gienists working in the field of sanitary technology basic data regarding vapor tension and rate of vaporization of different inorganic and organic substances in moving air. Particular emphasis was placed on substances, and especially toxic sub- stances, most commonly used in industrial technology. Such information should allow hygjenists to evaluate the potential danger associated with vaporization of toxic substances in relation to their physico-chemical and lexicological properties, and sanitary engineers to apply it in their computation of air ventilation in general and of qualitative determination of the degree of air charged with vapor of high-molecular substances, and in correctly distributing incoming and exhaust air, and in computing other means required for the sanitary improvement of labor conditions. It is suggested that sanitary engineers use the nomograms presented especially where a 5% error is per- missible. More than 85 chemically pure substances are represented in three nomograms and two tables. 09764 Altaian, Philip L. and Dorothy S. Dittmer (comps. and eds.) ATMOSPHERE AND POLLUTANTS. (CHAPTER V.) In: En- vironmental Biology, Aerospace Medical Research Labs. (6570th), Wright- Patterson AFB, Ohio, Contract AF33(615)- 2252, Nffl-GM-06553, NASA- NASr-238, Proj. 7164, Task 716406, AMRL-TR-66-194, p. 269-329, Nov. 1966. (300) refs. Numerical data on air pollutants are compiled and tabulated for a broad range of problems. The effects of pollutants on human health, plants and livesotck are presented. Charac- teristics and chemical composition of the atmosphere and its pollutants are compiled. Data on emission sources of pollu- tants and their distribution at various periods of time in dif- ferent locales are presented. Other categories covered are air dispersion of small organisms, biological effects of gaseous ions, and spacecraft and nuclear submarine atmospheres. 10866T Reutov, 0. A. and U. Yan-Tsei ISOTOPIC EXCHANGE OF SOME MERCURY ORGANIC SALTS WITH METALLIC MERCURY MARKED WITH Hg203. Translated from Russian. Dokl. Akad. Nauk SSSR, 117(6):1003-1006, 1957. The interaction was studied between metallic mercury labeled with the isotope Hg203 and the following organic mercury compounds: x-bromo-mercury-cyclohexanon, the ethyl ester of delta-bromo-mercury-phenylacetic acid, the methyl ester of delta-bromo-mercury-phenyl acetic acid, 3-bromo-mercury-3- benzyl camphor, 3-bromo-mercury-camphor, 1-chloro-mercu- ry-camphene, 2-bromo-mercury-camphagne and n-butyl- merucry bromide. The reactions were carried out under identi- cal conditions. The isotope exchange reaction was found to take place by direct action of metallic mercury on the mercury compound without the formation of free radicals. Isotope exchange occurs under mild conditions without decomposition of the mercury compounds and formation of radicals. Isotope exchange occurred also without change in the stereochemical configuration. 11570 Kosmider, S. RELATIONSHIP BETWEEN HEAVY METAL POISONING, ATHEROMATOSIS, AND HEART AND CIRCULATORY DIS- ORDERS. ((Zusammenhange zwischen Schwermetallvergiftun- gen und Atheromatose bsw. Herz-und Kreislaufstorungen.)) Text in German. Z. Ges. Hyg. 14(5):355-360, May 1968. 12 refs. Experimental lead poisoning in dogs induced electrocardio- graphic disorders (changes in repolarization) and histopathological alterations of the heart muscle. The clinical study of 108 patients with chronic lead toxicity (no details as to occupation) revealed that vagotonia prevailed mainly in younger subjects (22 of 60 patients between 18 and 45 years old) while older individuals (14 of 48 between 46 and 65 years old) had alterations of the heart muscle. Phonocardiography revealed that heart murmurs not connected to anemia but to the injury of the heart muscle. Experimental mercury poison- ing in dogs was responsible for high levels of cholesterol and beta-lipoproteins in the serum, as well as for increased mu- copolysaccharides in the aortic wall. 13197 Kleinfeld, Morris, Edward Stein, and Dolores Aguillardo DIVALENT CATIONS ON ACTION POTENTIALS OF DOG HEART. Am. J. PhysioL, 211(6):1438-1442, 1966.10 refs. The effects of Mn, Ni, Hg, Cd, Cu, Zn, Sr, and Mg on trans- membrane action potentials of Purkinje and ventricular muscle fibers on dog heart were studied. The concentrations of ca- tions administered varied between 0.001 and 0.00001 M. All ex- cept magnesium altered the action potential of both fibers. Only Hg produced a marked alteration of action potential of Purkinje fiber with little change in ventricular fiber action potential. The most consistent alteration produced by the divalent cations was either a shortening or lengthening of plateau phase of action potentials of both fibers. Nickel and Mn lengthened the plateau phase, whereas Cu, Hg, Zn, Cd, and Sr shortened it. Copper, Hg, Zn, and Cd produced a greater degree of shortening of duration of action potential in Purkinje than in ventricular fiber. These four cations have an affinity for binding sulfhydryl groups, and the greater modify- ing effect on the Purkinje fiber produced by these four cations suggests that this fiber may be more sulfhydryl-dependent than ventricular fiber. The lengthening of plateau phase can be as- cribed to a decrease hi potassium conductance, and the shor- tening of the plateau phase can be attributed to an increase in K conductance. Changes in Ca conductance may also be im- ------- F. BASIC SCIENCE AND TECHNOLOGY 25 plicated in plateau phase-a decrease in Ca conductance being associated with a shortening and an increase in Ca con- ductance with a lengthening of plateau phase. (Author abstract modified) 13348 Leach, S. J. THE REACTION OF THIOL AND DISULPHIDE GROUPS WITH MERCURIC CHLORIDE AND METHYLMERCURIC IODINE. I. SIMPLE THIOLS AND SOLUBLE PROTEINS. Australian J. Chem., 13(4):520-546, Nov. 1966. 45 refs. The polarographic behaviour of MeHgCl, (me = methyl), MeHgl, HgC12, neohydrin (3-chloromercuri-2-methoxypropylu- rea) and its iodo-derivative are described. Their chemical reac- tivity and -SH specificity were investigated and MeHgl was shown to have advantages as an -SH reagent on account of its high reactivity, stability, and 'ideal' polarographic behaviour. The reaction of protein -SS- groups with Na2SO3 proceeds slowly to completion in the presence of HgC12 or MeHgl and it is shown that with bovine plasma albumin, ribonuclease, and insulin the polypeptide chains may be separated for prepara- tive or structural studies under milder conditions than are customary. In the presence of urea at pH 9 the reaction is suf- ficiently rapid to form the basis of 'amperometric titration procedures for determining -SS- groups in eight intact proteins. The methods are especially valuable for proteins which have been previously converted to their -SR, -SO3(-), or -SS03(-) derivatives since the destructive hydrolytic step may be avoided. The mechanism and stoichiometry of the reactions are discussed. (Author summary modified) 14712 Nelson, G. 0. A SIMPLIFIED METHOD FOR GENERATING KNOWN CONCENTRATIONS OF MERCURY VAPOR IN AIR, In: Hazards Control Progress Report No. 33 (Januar April 1969), California Univ., Livennore, Lawrence Radiation Lab., UCRL-50007-69-1, p. 35-38, 1969. A compact apparatus which would require a minimum of spe- cialized equipment but which would still provide a desirable accuracy for the production of mercury vapor in air was designed. The compressed air passes through indicating silica gel, soda lime, and a charcoal filter to remove any impurities. The purified air stream splits into two lines; one line is used as the dilution air and the other flows into a saturation unit. The saturated and diluted air are mixed. The desired concentration is achieved by adjusting the flow rates of air and mercury- saturated air at the measurement temperature. Accurate mea- surement of the temperature is the most crucial part of the calibration operation. The mercury vapor generator occupies only about 1 sq ft of bench space and yields concentrations from 0.011 to 2.5 mg/cu m at flow rates of 6 1/min or more. Other concentration ranges can be achieved if different flow- meters are substituted for those suggested. Concentration changes are made simply and easily by adjusting the needle valves. Equilibrium is reached almost instantaneously, since there is no large mixing flask to equilibrate. 15266 Rozenberg, Jean PHOTOCHEMICAL SEPARATION OF ISOTOPES. Isotop. Radial. Techno!., 3(3):200-205, Spring 1966. 57 refs. Experiments in the photochemical separation of isotopes are reviewed, and the technique is shown to be especially applica- ble to mercury isotopes. Good separation requires that the bands in the absorption spectrum of the element be widely separated and that the product enriched by photoselective reaction not be contaminated by secondary reactions. Separa- tion of mercury isotopes is a well-developed procedure and is about to become industrial. Lithium isotopes should theoreti- cally be separable by such a technique, but handling of molten lithium is difficult. The failure of the first attempts to separate chlorine and uranium isotopes is probably due to misjudgment of the primary mechanisms and to the use of too simple techniques. Hydrogen isotopes may be separated with light sources with H (or D) alpha Lyman sources, but yields are too low for large-scale use. (Author abstract modified) 22567 Whiteman, J. L. ADSORPTION AND SORPTION COMPLEXES FINAL TECHNICAL REPORT. Imperial Coll. of Science and Technology, London (England), Contract DA-91-591-EUC- 2465, 24p., June 1963. 5 refs. CFSTI: N63-23425 A study of the inclusion complexes formed by sulfur, phosphorus, and mercury in a number of zeolites is reported. The sorbents are regarded as continuous frameworks built by stacking together cages of various types. One such cage is the cubo-octahedron which has 14 faces; six are made from rings of four (Al,Si)04 tetrahedra and the remaining eight from rings of six such tetrahedra. Another structure-building unit is the hexagonal prism. In chabazite and gmelinite the anionic frameworks can be represented as sequences of layers of hex- agonal prisms. Sulfur vapor adsorbed rapidly by the zeolites CaA and NaX. The uptake of the large cages in these zeolites is only about 75% of that expected from their volmes. This may be attributed to steric difficulties encountered in packing large molecules into the cages. The sulfur uptake of natural chabazite is comparatively slow and limited in extent Phosphorus is also strongly adsorbed by NaX, but the ap- proach to equilibrium is slow. Studies have been conducted on the mercury uptake of silver ion-exchanged zeolites. Large up- takes were recorded for the zeolites with the more open struc- tures, and hysterisis loops were obtained. The saturation up- take of mercury is insufficient to completely fill the structure. 32072 Roesmer, J. and P. Kruger THE RADIOCHEMISTRY OF MERCURY. Washington, D. C., National Academy of Sciences National Research Council, Dec. 1960, 50p. 85 refs. The radiochemistry of mercury is reviewed with respect to the isotopes of mercury; special attention is given to features of chief interest to radiochemists, including metallic mercury, mercury compounds, toxicity, insoluble compounds, coprecipitatipn and exchange characteristics, complex ions, or- ganic precipitants, solvent extraction of mercury, ion exchange behavior, paper cnromatographic behavior, and activation, and vaporization analysis. The dissolution of mercury compounds and counting techniques for mercury are discussed. A collec- tion of detailed radiochemical procedures for mercury are presented. ------- 26 G. EFFECTS-HUMAN HEALTH 05185 K. Kiryakov CHANGES IN THE CEREBRAL BIOELECTRICAL ACTIVI- TY IN WORKERS FROM THE EFFECT OF MERCURY. Gigiyena Truda i Professional'nyye Zabolevaniya. 60-4, 1963. Russ. (Tr.) The effect of mercurial vapors can bring about certain changes in the cerebral cortical bioelectrical activity expressed chiefly in low voltage and incomplete or partially dominant desynchronization (fast rhythm). These changes are related to the duration of industrial contact with mercury. In persons who were healthy for practical purposes, in the majority of cases, the electroencephalograph pattern showed no changes; the EEG changes in some persons who were healthy for prac- tical purposes can constitute the EEG method should be used simultaneously with other clinical and laboratory methods for purposes of early diagnosis of mercurial neurointoxications. 05470 Y. Ohta ACTIVATION ANALYSIS APPLIED TO TOXICOLOGY; MEASUREMENT OF THE CONCENTRATION OF MERCU- RY IN HAIR BY NEUTRON ACTIVATION ANALYSIS. Japan. J. Ind. Health (Tokyo) 8, (5) 12-5, May 1966. Jap. A determination was made of the concentration of mercury in head hair of a man suspected to have been exposed to mercu- ry vapors and to have inhaled some. About 100 mg of hair, cut to equal lengths and at the same distance from the scalp at the part of the head every month for seven months, was washed to remove surface contamination. After neutron irradiation of the sample in an HTR reactor for 5 hr in a thermal neutron flux of about 1 x 10 to the 12th power n/sq cm/sec, followed by cooling for 5 days, mercury was determined by direct gamma-ray spectrometry. Results from the hair samples showed that the concentration of mercury decreased monotonically from 20.4 ppm to 4.6 ppm. Results from sam- ples taken from other workers who had not inhaled mercury vapor were significant in that the concentration of mercury found was only from 1.9 to 6.2 ppm. Non-destructive activa- tion analysis of head hair enables more cases to be dealt with in a shorter time. The detectable limit is 0.08 plus or minus 0.02 microgram using a minimum quantity of hair below 50 mg. (Authors' summary, modified) 05737 Mastromatteo, E. RECENT OCCUPATIONAL HEALTH EXPERIENCES IN ON- TARIO. J. Occupational Med. (Ottawa). (Presented at the American Industrial Health Conference, Bal Harbour, Fla., Apr. 1965.). 7(10):502-511, Oct. 1965. Industrial exposure to several toxic agents is reveiwed and case histories are given. Included are mercury exposure in chlor-alkali plants, electrical outdoor advertising, the hat in- dustry, and the treating of grain seed with an organic mercuri- al fungicide; asbestos insulation and the manufacture of brake linings and clutch faces; exposure to toluene didiisocyanate and a curing agent for isocyanate-containing polymers; fur- furyl alcohol exposure; illness associated with urethane foam manufacture; and respiratory sensitization in a rubber indus- try. 05945 Kurnosov, V. M. SUPPLEMENTAL DATA ON THE ACCUMULATION AND DISTRIBUTION OF MERCURY IN THE ORGANISM OF EX- PERIMENTAL ANIMALS. (In: Limits of allowabl concentra- tions of atmospheric pollutants. Book 6.) U.S.S.R. Literature on Air Pollution and Related Occupational Diseases, Vol. 9. pp.47-54. (1962). Russ. (Tr.) Levine, B. S. 'Translator' Chronic experiments were conducted for the determination of the effect of 0.002-0.005 mg/cu m mercury vapor on the organ- ism. Chronic exposure to the effect of mercury vapor in con- centrations at times found in atmospheric air adversely af- fected the organism by disturbing the functional activity of higher nervous centers, by excessive deposition of mercury in the organs and especially in the brain, and by producing pathomorphologjcal changes. The extent and gravity of the neurological and pathomorphological changes were directly proportional to the mercury vapor concentration in the inhaled air. Experimental exposure of animals to the inhalation of mer- cury vapor in concentrations below the limit of allowable con- centration in atmospheric air elicited none of the above described pathological symptoms. This confirms the conclu- sion previously arrived at, namely, that 0.0003 mg/cu m of mercury vapor should be regarded as the limit of its allowable concentration in atmospheric air. Results of the present in- vestigation showed that chronic exposure to mercury vapor in concentrations of 0.008-0.01 mg/cu m, resulted in the deposi- tion of mercury in organs and brain tissues, which disturbed the higher central nervous activity centers and other organs, accompanied by patho-morphological changes. Therefore, it is suggested that the existing limit of allowable mercury vapor concentration for air of working premises is ill founded and should be revised after appropriate investigation. 06172 Clarkson, T. TOXICOLOGICAL ASPECTS. Ann. Occupational Hyg. (Lon- don) 8 (1), 73-80 (Mar. 1965). (Presented at the 16th Con- ference, British Occupational Hygiene Society, Apr. 7-8, 1964.) A discussion of one new technique which is finding increasing application to the toxicology of mercury and which has al- ready revealed some unusual biological properties of the com- pound is presented. Thetechnique is radioisotopic, in particular the isotope known as Hg203. In order to produce toxic effects, metallic mercury vapor, after absorption into the animal, must first be oxidized to the ionic form. The finding that the dis- tribution and excretion of mercury is similar after injections of HgC12 or exposure to mercury vapour indicates that the ox- idation of the metal is rapid and probably takes place hi the blood. To check this conclusion, samples of whole heparinized ------- G. EFFECTS-HUMAN HEALTH 27 human blood were equilibrated with radioactive mercury vapour in vitro. After 25 hr equilibration in air, 25 micrograms Hg were present per ml of haemoglobin solution. The unique feature of this experiment was the behavior of the radioisotope. The mercury, originally present as mercuric ion strongly bound to hemoglobin, had been converted to mercury vapour and as such, had diffused out of the solution into the air space and finally collected in the liquid metallic phase. Other electron donors (reducing agents) present in animal tis- sue may be capable of converting the salt to the metal and thereby leading to loss from the tissue by volatilization. The significance of this point was not appreciated until further results were obtained from completely different experiments. These results give rise to a variety of questions concerning the mechanism whereby micro-organisms are able to volatilize mercury. We might also speculate that those micro-organisms which are resistant to mercuric chloride are those which are capable of volatilizing the metal. These questions must be left for future investigation. Of immediate practical importance is the ability of various micro-organisms to produce rapid volatilization from sample of urine. Clearly much more care must be taken in the collection and storage of urine samples prior to measurement of mercury. 06176 Kazantzis, G. CHRONIC MERCURY POISONING-CLINICAL ASPECTS. Ann. Occupational Hyg. (London) 8 (1), 65-71 (Mar. 1965). (Presented at the 16th Conference, British Occupational Hy- giene Society, April 7-8, 1964.) Chronic mercury poisoning, common in the past, still occurs today and the diagnosis even in those exposed in industry can be missed. Three cases of poisoning from a group of five wor- kers exposed to mercury working in a firm making electrical apparatus showed between them the classical features of the disease. All had high values for urinary excretion of mercury and one worker had transient proteinuria which cleared as mercury excretion fell. Investigation showed the proteinuria to resemble that found in glomerular lesions of the kidney but no other functional abnormality was detected. All workers ex- posed to mercury should be kept under medical surveillance and regular examination of the urine should be performed. Those who develop proteinuria, as well as those with mercuri- alism, should be removed from further exposure until full recovery occurs. 06239 Kudsk, F. N. CHEMICAL DETERMINATION OF MERCURY IN AIR (AN IMPROVED DITraZONE METHOD FOR DETERMINATION OF MERCURY AND MERCURY COMPOUNDS). Scand. J. Clin. Lab. Invest., 16:1-15, 1964. In an introduction the prophylactic and diagnostic importance of knowledge of the mercury content of the air are described. The present disagreement of the establishment of toxic thresholds for this metal and its compounds is emphasized. After a brief description of some of the most frequently used methods for estimating mercury in the air, an improved ap- paratus for the rapid collection of mercury from the air in 10 ml sulphuric acid- potassium permanganate solution is described. The treatment of the absorption solution before the determination of mercury is discussed, and a modified method suggested. Two methods of estimating the mercury collection are described. By one method, which can be used 'in the field', the mercury is estimated with rather low accuracy by an extraction titration with a solution of dithizone in chloroform. The other more accurate and more sensitive method is based on a spectrophotometric estimation using dithizone. A method which can be used in the presence of up to 20 mg copper is described. (Author summary) 06617 V. V. Sokolovskiy CONCERNING THE HEMOLYTIC ACTION OF THIOL POISONS. Tsitologiya (Cytology) (4), 460-5 (1962). Russ. (Tr.) DDC: AD 400 415 For a more complete illumination of questions concerning the ability of thiol poisons to cause destruction of erythrocytes, and for the relation of destructive changes in cells through in- activation of their SH-groups, the hemolytic action of specimens of all three types of thiol poisons, i.e. oxidizing (sodium nitrite), alkylating (monoiodo-acetic acid), and mer- captide-forming (mercuric chloride) agents were studied. Thiol poisons of the mercaptide-forming, oxidizing and alkylating types produce hemolysis of erythrocytes in in vitro experi- ments. Hemolytic action by oxidizers can be prevented by thiol substances (2.3 dimercaptopropane sodium sulfonate). An essential role in the preservation of the spatial structures of erythrocytes belongs to their sulfhydryl groups. 06680 Hervy B. Elkins EXCRETORY AND BIOLOGIC THRESHOLD LIMITS. Am. Ind. Hyg. Assoc. J., 28(4):305-314, July-Aug. 1967. 27 refs. The Industrial Hygienist today recognizes that the peril in- curred by the inhalation of harmful dust is a function of two variable factors the degree of harmful exposure and the specific susceptibility of the exposed individual to ... injury.' The preceding statement was made by Don Cummings in a paper published in 1938. The following year he repeated a sug- gestion he had discussed previously. '...It is also suggested that for each hazardous industrial dust two limiting concentrations should be established. The first, to be designated as the prima- ry threshold, should express that concentration of dust in which a healthy man may be employed for a working lifetime without incurring a disabling injury. The second, to be designated as the secondary threshold, should express that concentration of dust in which a healthy man will inevitably contract silicosis if regularly employed for many years.' Practi- cally all industrial hygienists presently pay lip service to the principle stated in the first of these statements. The suggestion in the second statement has been only half adopted. Threshold limits, so-called, or under a different name, have been prepared for over 400 industrial hazards by various organiza- tions in this country and abroad. There seems to be some con- fusion outside, if not within, the profession, however, over whether these values correspond to the primary or secondary limits. Certainly, when the observation that one or two wor- kers can endure concentrations well above the Threshold Limit Value for a few months, without obvious fll effects, leads to the conclusion that the threshold limit is too low, it would seem that the observer has the secondary threshold in mind, rather than the primary one. The only biologic fluid finding much application for exposure tests is blood; limited use has been made of biopsy specimens of lung, skin and fat, but these are not very practical for periodic sampling. The excretory products most frequently analyzed are urine and breath; sweat, the other major excretion product, is not wefl adapted for exposure tests. ------- 28 MERCURY AND AIR POLLUTION 07234 Kosmider, S., D. Habczynska, and C. Wazna-Bogunska MORPHOLOGIC LESIONS IN THE KIDNEYS IN EXPERI- MENTAL POISONING WITH SUBLIMATE AND MERCURY VAPOR. ((Zmjany morfologiczne w nerkach w doswiadczal- nym zatruciv sublimatem oraz parami rtecO) Patol. Polska (Warsaw) 18(l):33-43, 1967. Text in Polish a group of 47 rabbits composed of a mixed breed of both sexes, was divided into a control and two groups which were experimentally poisoned with mercury. The first group of 15 received a single intravenous dose of 3 mg/kg of sublimate. The second group of 30 rabbits was exposed to a mercury vapor atmosphere of 10.6 mg/cu m for 1 1/2 hr daily for 30 days after which they were sacrificed. In the first group, the blood creatinine level rose from 1.39 mg % to 4.8 mg%; the uric acid level from 1.07 mg% to 1.12 mg%, and great quanti- ties of albumin, sediment, and red blood cells were found in the urine. The animals were sacrificed after 4 days. Histologi- cal examination of the kidneys showed severe damage in the renal epithelium, more pronounced than in the second group. Urinary levels of the following ions in the second group rose to these maximums during the 2nd week: Na, 615 mg (control, 163 mg); K, 143 mg (control 40 mg; Ca, 19.4 mg (control 5.8 mg) and dropped gradually during the 3rd and 4th weeks. Blood creatinine was normal; uric acid rose to 1.63 mg% (con- trol 1.07 mg%) after 4 weeks. Both groups showed damage to the renal arteries, with thickening of the vascular walls, en- dothelial proliferation, and perivascular fibrosis. 07319 Copplestone, J. F. and D. A. McArthur AN INORGANIC MERCURY HAZARD IN THE MANUFAC- TURE OF ARTIFICIAL JEWELRY. Brit. J. Ind. Med. (Lon- don), 24(1):77-80, Jan. 1967. 16 refs. An unusual inorganic mercury hazard in a factory manufactur- ing artificial jewelry is described. There was a decided mercu- ry exposure in the jewelry plant where a mercury-cadmium amalgam is poured into rubber molds which are removed when the heated amalgam cools. The castings are encased in plaster and heated from 1000 to 1200 deg C overnight. These opera- tions, along with the recovery still, were responsible for con- centrations in the air up to 0.5 mg/cu m of mercury in the general atmosphere and up to 2000 micrograms/liter of urine. Despite the high concentrations, no worker showed any overt evidence of mercurialism and there had been no complaints of illness among them. It is possible that mercurialism might be due to an inability to excrete absorbed mercury rather than simply to exposure. The poor excretion might be due to failure of the mercury to reach the kidney or to selective tubular resorption. Preventive measures have resulted in a slow fall in urinary concentrations over a period of several months. 07330 V. Parameshvara MERCURY POISONING AND ITS TREATMENT WITH N- ACETYL-D- PENICDLIAMINE. Brit. J. Ind. Med. (London), 24(l):73-76, Jan. 1967.11 refs. Two cases of chronic inorganic mercury poisoning of moderately rapid onset are described. Although exposure was the same in the two patients, the mercurial poisoning affected chiefly the kidneys in one and the gums in the other. Mercuri- alentis and coraeal opacities were seen after short exposure to the metal. One case was treated successfully with N-acetyl-D- penicillamine. No toxic effects were observed and this is sug- gested as the treatment of choice for mercury poisoning. (Author's abstract) 07337 M. Lob CHRONIC MERCURY POISONING IN THE MANUFAC- TURE OF FLUORESCENT TUBES. ((Intoxications Chroniques par le Mercure dans 1'Industrie des Tubes Lu- minescents.)) Text in French. Arch. Mai. Prof. (Paris), 26(6):289-292, June 1965. 4 refs. The mercury hazard among glass blowers engaged in the manufacture and repair of fluorescnet lamps is discussed on the basis of a survey of 11 plants and clinical evidence of 12 glass blowers involved in an exposure with little or no regard for ventilation, housekeeping, good practice, or awareness of the hazard; 50% of the workers showed signs of mercury poisoning. The symptoms included nervousness, irritability, loss of libido, impotence, tremors, dermographism. The average mercury in the urine was 125 microgram/liter with three results equaling 200, 310, and 350 microgram/liter. The air samples varied from 0.20 to 0.35 mg/cu m and were generally below the minimum allowable concentration of 0.1 mg/cu m. Although one patient with 21 years of exposure and classical symptoms of mercury poisoning showed only 20 microgram/liter of mercury in the urine, this was regarded as evidence that he was not eliminating mercury, and not that he was not exposed to it. Control measures were recommended which were based on an educational campaign, improved housekeeping, better ventilation, the elimination of mercury spillage, and the removal of mercury already spilled. The prac- tice of sucking mercury into tubes by mouth should be forbid- den. The efficacy of the controls should be checked by periodic air sampling and medical examinations. The uncon- trolled use of mercury by glass blowers in the manufacture of fluorescent tubes produces a serious mercury poisonging hazard. 07423 Heimann, H. STATUS OF Affi POLLUTION HEALTH RESEARCH, 1966. Arch. Environ. Health, 14(3):488-503, Mar. 1967. 178 red Health, 14(3):488-503, Mar. 1967. 178 refs. (Presented in part before the American Industrial Hygiene Conference, Pitt- sburgh, Pa., May 16-20,1966.) Consideration is limited to man-made air pollutants, omitting naturally occurring adventitious airborne materials. Radioac- tive materials were not discussed. Acute episodes of air pollu- tion; systemic effects of air pollution caused by arsenical com- pounds, mercury, beryllium, lead, carbon monoxide, economic poisons, manganese, and asbestos; air pollutants as irritants; medical conditions such as acute nonspecific upper respiratory disease, chronic obstructive ventilatory diseases, chronic bronchitis, pulmonary emphysema, bronchial asthma, and lung cancer, are reviewed. 08079 Keenan, Robert G. CHEMICAL ASPECTS OF ENVIRONMENTAL HEALTH. Oc- cupational Health Rev.Ottawa, 18(l):3-8,1966. 39 refs. Modern methods of physical and chemical analysis, as applied to biological materials, atmospheric samples containing gase- ous or particulate contaminants, industrial process materials, intermediates, and finished products are discussed briefly. A discussion of the uses to be made of such analytical data in- cludes: (1) the 'normal' concentrations of certain metallic ele- ments in body tissues and fluides; (2) the need to compare these concentrations with those developed analytically on sam- ples from exposed subjects; (3) the comparison of atmospheric concentrations of contaminating substances found in the work- ------- G. EFFECTS-HUMAN HEALTH 29 ing environment with the A.C.G.I.H. Threshold Limit Values; (4) the analysis of industrial process materials, settled dusts, and finished products to help in assessing the total exposure of the worker to chemical elements. (AuthorOs abstract, modified) 08092 Beliles, R. P., R. S. Clark, P. R. Belluscio, C. L. Yuile, and L. J. Leach BEHAVIORAL EFFECTS IN PIGEONS EXPOSED TO MER- CURY VAPOR AT A CONCENTRATION OF 0.1 MG/CU M Am. Ind. Hyg. Assoc. J., 28 (5): 482-484, Sept - Oct. 1967. 6 rets. Earlier studies have shown that exposure to high concentra- tions of mercury vapor (17 mg/cu m) induced changes in the operant behavior of pigeons. The sensitivity of operant behavioral techniques in pigeons exposed to a mercury vapor concentration nearer the threshold limit value of 0.1 mg/cu m was assessed. Three male Carneaux pigeons (one control, two experimental) were trained to a multiple fixed ratio, fixed in- terval schedule of reinforcement. After relative behavioral sta- bility was obtained, the experimental animals were exposed 6 hours a day for 20 weeks to mercury vapor at a concentration level of 0.08 mg/cu m. No behavioral, histological, or gross signs of mercurialism were noted. (AuthorsO abstract, modified) 08167 Trakhtenberg, I. M. THE TOXJCITY OF VAPORS OF ORGANIC MERCURY COMPOUNDS (ETHYLMERCURIC PHOSPHATE AND ETHYLMERCURIC CHLORIDE) IN ACUTE AND CHRONIC INTOXICATION. (EXPERIMENTAL DATA). In: Survey of U.S.S.R. Literature on Air Pollution and Related Occupational Diseases. Translated from Russian by B. S. Levine. National Bureau of Standards, Washington, D. C., Inst. for Applied Tech., Vol. 3, p. 205-210, May 1960. CFSTI: TT 60-21475 Inhalation by white mice of vapors of organic mercury com- pounds, such as ethylmercuric phosphate and ethylmercuric chloride, caused acute or chronic poisoning varying in severity with the duration of exposure and vapor concentration. Poisoning by the mercury compounds followed a definite course and terminated in the death of the animals. Acute poisoning seriously affected respiration and, to a lesser degree, the nervous system. In chronic intoxication the control nervous system was basically affected. Vapors of ethylmercu- ric phosphate and chloride proved more toxic than metallis mercury vapor. 08328 Molokhia, Mohamed M. and Hamilton Smith TRACE ELEMENTS IN THE LUNG. Arch. Environ. Health, Vol. 15, p. 745-750, Dec. 1967.15 refs. The concentrations of three essential (copper, manganese, zinc) and four nonessential (antimony, arsenic, cadmium, mer- cury) trace elements in the lungs of a random healthy popula- tion were surveyed and show the characteristic modes of dis- tribution. Against this background are set the findings of an in- vestigation of the distribution of trace elements throughout the lungs themselves. These results show the tendency of nones- sential trace elements to accumulate in higher concentrations in the lung parenchyma than in the surrounding unexposed tis- sue. That the source of this accumulated material is probably airborne dust is supported by the fact that the apex of the lung tends to be more contaminated than the base. The lower con- centrations of trace elements in cancerous lung tissue than in healthy lung may in part be due to the shorter exposure time of the neoplasm to atmospheric dust. The picture within the nonessential element group tends to vary. This is shown by the low lymph-node concentration of mercury and cadmium when compared with the antimony and arsenic levels and may be due to the varying ease of absorption and removal of particu- late contaminants by the normal body processes. The situation with respect to the essential trace elements is more obscure, perhaps due to a concentration control mechanism combined with varying ease of absorption. (Authors' summary) 08387 N. A. Al'terman, S. F. Sorokina DISEASE INCIDENCE IN UNDERGROUND WORKERS IN MERCURY MINES. 110 zabolevaemosti podzemnykh rabochikh rtutnykh shakht.)) Hyg. Sanit (English translation of: Gigiena i Sanit.), 31(7-9):37-40, July-Sept. 1966. 8 refs. The medical reports of 458 undergroun workers for 1961-1963 were analyzed. The majority were 21-40 years old, while only 7.5% of the subjects were over 50 years of age. Some workers (31.5%) had worked in the mercury mines for up to five years 33.2% up to 10 years; 24.4%, up to 15 years; and 10.9% had worked longer than 16 years. The incidence of industrial trau- ma, tonsillitis and radiculitis decreased significantly between 1961 and 1963. During this period the average incidence per 100 workers for grippe was 3.3; for upper respiratory tract in- fections, 15.3; for tuberculosis, 0.5; and 7.7 for tonsillitis and exacerbation of chronic tonsillitis. A comparison of workers in coal mines and in mercury mines indicates that the mercury mine workers suffer most frequently from grippe and upper respiratory tract infections, while the coal miners suffer prin- cipally from industrial trauma. Furthermore, the length of work experience, age, and occupation are directly related to the incidence of morbidity in the mercury mine workers. Thus, incidence of emphysema increased markedly, from 4.4 per 100 workers with work experience of up to five years, to 30.8 per 100 workers with experience of 16-20 years. Occupation is re- lated to incidence of certain diseases: acute upper respiratory tract infection and radicultis were higher in the cutters, who also had a higher incidence of chronic bronchitis (often com- bined with emphysema). These mercury mine workers developed silicosis after working an average of 15 years; in another mercury mine, silicosis appeared after an average ser- vice of 4.5 years. This difference is related to the reduction of dust in the mines (by a factor of seven) following the introduc- tion of wet drilling with naphthenate soap. Bronchitis is re- garded as an occupational disease related to the presence of aerial dust in the mine. 08746 A REVIEW OF THE TOXICITY AND METABOLISM OF MERCURY AND ITS COM- POUNDS. Med. Serv. J. (Can.) 23(5):886-808, May 1968.113 refs. Mercury poisoning is most frequently brought about by inhala- tion of mercury vapors. It is usally confined to industry, but cases such as the death of two female stenographers in a warehouse in Alberta, where diethyl mercury phosphate was stored, have been re- ported. The frequency of positive cases of mercurialism tends to increase with increase in duration and intensity of exposure, es- pecially when exposure is to high concentrations in the air. This appears to be statistically sig- nificant for large groups of indi- viduals, but does not apply to single cases. Several cases of mercurialism were found in in- dividuals who had been exposed for 8 years or longer to con- centrations of mercury in air less than the M-A.C of 0.1 ------- 30 MERCURY AND AIR POLLUTION mg./cu. m. In general the excretion of mercury in the urine is directly related to the concentration of mercury in the air and the degree of exposure. There is a lack of correla- tion between urinary mercury and clinical manifestations of poison- ing. Similar observations were made on mercury concentra- tions in the blood. When mercury is absorbed or inhaled an an in- organic or phenyl compound, it leaves the blood in a matter of hours and much of it is promply excreted in the urine. This is not true of the alkylmercurials, which are highly toxic. D. pen- cillamine and BAL (2,3-dimercaptopropanol) have been used in the treatment of mercury poisoning. How- ever, BAL is the effective drug of choice. 09056 Ulfvarson, Ulf DETERMINATION OF MERCURY IN SMALL QUANTITIES IN BIOLOGIC MATERIAL BY A MODIFIED PHOTMETRIC- MERCURY VAPOR PROCEDURE. Acta Chem. Scand., 21(3):641-646, 1967. 5 refs. A modification of the Jacobs-Yamaguchi method of determin- ing mercury is presented. In the original method mercury is extracted with dithizone in chloroform from incompletely digested samples. The dithizone-mercury complex is subjected to heat destruction and the resulting mercury vapor is deter- mined photometrically. This method suffers from some disad- vantages among which is a low and uncertain maximum deflection because of a lengthy evaporation period for the mercury vapor during the heat destruction of the dithizone- mercury complex, and in some cases background readings from interfering substances. In the presented modification the mercury vapor is absorbed on gold and then released again rapidly by mild heating of the gold filter. The method results in comparatively high reading even with amounts of mercury as low as 5 ng. The coefficient of variation of determinations of mercury in a standard solution has been found to be about 30%, when amounts of mercury varying from 5 to 100 ng were determined. The method has been controlled by comparison with neutron activation analyses and scintillation analyses of radioactive mercury. These comparisons show that analysis of samples containing more than 10 ng of mercury per g can be made with the photometric method to give results of the cor- rect order of magnitude. Silver or copper will not influence the determinations. Iodide, however, will inhibit the extraction of mercury from the digest solution when present in amounts of the same order of magnitude as the mercury itself. (Author's abstract) 093% Kosmider, S.,S. Zajaczkowski, and E. Rogowska ACTIVITY OF SERUM CHOLINESTERASE IN EXPERIMEN- TAL POISONING WITH METALLIC MERCURY. Patol. Pol- ska. Vol. 17, No. 1, 1966. 15 ref Translated from Polish by I. Jampoler in Polish Med. J., 5(5):1044-1048, Oct. 1966. Serum cholinesterase activity was studied in a group of 25 rab- bits exposed for 30 days to 1.5 hr. daily to 10.6 mg/cu.m. mer- cury vapor. Increased diuresis and salivation were observed in all rabbits. Daily urinary excretion of Hg increased, from 11-35 gamma in the first week of exposure to 117-125 gamma. Serum cholinesterase activity dropped significantly after the 30-day exposure. Studies of human serum cholinesterase in vitro also indicate enzymatic activity is reduced by the presence of Hg ions. A drop in serum cholinesterase activity could be of diag- nostic value in the examination of persons exposed to mercu- ry. 09397 Kosmider, Stanislaw and Zdzislaw Dabrowski CATALASE ACTIVITY OF THE RED BLOOD CELLS, BRAIN AND LIVER IN EXPERIMENTAL POISONING WITH METALLIC MERCURY. Arch. Immunol. Therapiae Exp. 14(l):74-78, 1966.18 refs. Catalase activity of erythrocytes, liver and brain was studied in 19 rabbits exposed for 30 days for 1.5 hrs. daily to 10.6 mg/cu m mercury vapor. Salivation and apathy were observed. Urinary excretion of Hg rose from 11-35 gamma daily in the first week of exposure to 117-125 gamma in the following weeks. Controls were normal. Erythrocyte catalase activity in- creased significantly after 30 days exposure, but increased to lesser degrees in the liver and cerebral tissues. Increased en- zyme activity may be an expression of a cellular defense mechanism to the effect of the Hg ions. 09406 Nordberg, Gunnar and Fredrik Serenius DEPOSITION OF INHALED MERCURY EN LUNG AND BRAIN-PRELIMINARY COMMUNICATION OF A STUDY ON THE GUINEA-PIG. ((Lung- och hjarndepositionen av in- halerat kvicksilver—Preliminart meddelande fran en under- sokning pa marsvin.)) Text in Swedish. Nord. Hyg. Tidskr. 47(l):26-27, Jan. 1966. The distribution of radioactive mercury in lung and brain tis- sue of guinea pigs was examined using autoradiography. Mer- cury was found in the bronchial tree as well as in the alveoli. Shortly after exposure, the mercury in the brain was concen- trated in the cortex and cerebellum. Some 6-16 days after ex- posure, however, the level of mercury in the cerebrum was lower in the cortex than in the white matter of the corpus cal- losum. At these longer post-exposure intervals, some parts of the brain stem also concentrate high levels of mercury. (Authors' abstract, modified) 09524 Gimadeev, M. M. SULFHYDRYL GROUPS CONTENT IN THE BLOOD SERUM OF RABBITS IN CHRONIC INTOXICATION WITH LOW MERCURY FUMES CONCENTRATIONS. ((Soderzhanie sulf- gidrilnykh gmpp v syvorotke krovi krolikov pri khronicheskoi intoksikatsii parami rtuti v malykh kontsentratsiyakh.)) Text in Russian. FarmakoL i Toksikol. (Moscow), 28(4):483-484, 1965. Rabbits were exposed 6 hours daily for 6 months to mercury vapor levels of 0.01 to 0.15 mg/cu m and the blood sulfhydryl content studied. Sulfhydryl groups were determined by iodometric titration from blood samples withdrawn at 10-15 day intervals and later at 20 -30 day intervals. The mercury vapors caused a gradual reduction in the sulfhydryl group con- centrations but when exposure was discontinued, sulfhydryl concentration normalized within 15 days. 10361 Trakhtenberg, I. M., I. V. Savitskii and R. Ya. Shterengarts THE EFFECT OF LOW MERCURY CONCENTRATIONS ON THE ORGANISM. THE QUESTION OF SIMULTANEOUS EF- FECTS OF TOXIC AND TEMPERATURE FACTORS). ((0 vliyanii na organizm malykh kontsentratsii rtuti. (K volrosu o sovmestnom deistvii toksicheskogo i temperaturiogo fakorov.))) Text in Russian. Gigiena Truda i Prof. Zabolevaniya 9(12):7-12, Dec. 1965. Mercury poisoning can occur even at low concentrations such as a a few hundred rag/cum, and particularly in the presence ------- G. EFFECTS-HUMAN HEALTH 31 of high temperatures. To determine the combined effect, a se- ries of tests were run on animals and in an industrial environ- ment (Moscow Electric Bulb Plant). Three groups of workers with varying degrees of exposure to mercury and at different room temperatures were observed during 1955-1962. Results, including workers' complaints, are tabulated and approximate each other. Test animals (white mice and rabbits) were sub- jected to a 4-6 hr. daily inhalation of 0.01-0.003 ing/cum mer- cury for 30-50 days. Another group was exposed to 38-40 deg. C. temperature, while a third group was exposed to both. The high temperatures significantly increase the specific impact of mercury on the health of the animals, producing shifts in the blood serum protein levels (14.2% increase in gamma globulin; 9.4% decrease in albumin and in tissue sulhydryl level). Loss of weight averaged 27%. Mice which were fed mercuric chloride and kept at 40 Degrees C. developed anemia and a weight loss of 12%. Death rate was 50-62% with mice beginning to expire 10-15 days after the start of tests. 11241 E. M. Roth, W. H. Teichner, and A. 0. Mirarchi CONTAMINANTS STANDARDS. (SECTION 13.) In: Compen- dium of Human Responses to the Aerospace Environment, Volume m, Sections 10-16, Emanuel M. Roth (ed.), Lovelace Foundation for Medical Education and Research, Albuquerque, N. Mex., CONTRACT ttNAS-HS, p. 1-115, Nov. 1968. 233 refs. CFSTI: NASA CR-1205(m Toxicological problems in space operations cover three situa- tions: (1) the acute, short term, high-level exposure either in ground support or space cabin conditions; (2) the 8-hour work day exposure found in manufacturing and ground support situations; and (3) continuous, long term exposure to trace contaminants, such as would be anticipated in extended space missions. In view of the necessity for provisional limits of manned space flights of 90 to 1000 days duration the following criteria for trace contaminant control in manned spacecraft have been derived: Contaminants must not produce significant adverse changes in the physiological, biochemical, or mental stability of the crew. The spacecraft environment must not contribute to a performance decrement of the crew that will endanger mission objectives. The spacecraft environment must not interfere with physical or biological experiments nor with medical monitoring. Based on these criteria air quality stan- dards for prolonged manned missions have been established. The following topics are discussed: kinetics of contaminants in space cabins; lexicological factors; toxicology in the spacecraft environment; source of contaminants; particulates and aerosols; microbial contaminants. Tables presenting chemical analysis of all contaminants with standard levels for space cabins are listed. 11556 Clarkson, T. W. BIOCHEMICAL ASPECTS OF MERCURY POISONING. J. Occupational Med., 10(7):351-355, July 1968. 29 refs. Since the results of studies on the localization of mercury and its effects on particular enzymes and subcellular particles (e.g., the lysosomes) have been inconclusive, this review deals mostly with the biotransformation of mercury and its com- pounds in living systems. Particular attention is given to the biotransformation of organic mercurials, especially their degradation in mammalian tissues and the fate of such com- pounds when released into the soil after use as fungicides. The organic mercurials apparently yield inorganic mercury, which can in turn be transformed into methyl-mercury, a cumulative and irreversible poison. It has also been shown that metallic mercury can be oxidized rapidly in the blood, but that mercu- ric ion may also be rapidly volatilized (at least by microorgan- isms). Mercury vapor seems to be taken up much more rapidly than mercuric ion by the brain. The lexicological properties of the alkyl mercurials are also reviewed, with particular atten- tion to the mercurial diuretics and the kidney damage which they may produce. The isotope exchange technique has been used to determine whether the toxic effects of the alkyl mer- curials are due to inorganic mercury, and whether any inor- ganic mercury which is produced remains in the tissues for long periods. Previously published data are cited on the toxici- ty (LD50, renal accumulation of Hg) of HgC12, p-chloromercu- ribenzoate, and chlormerodrin in rats and mice. 12653 M. H. Berlin, G. F. Nordberg, F. Serenius ON THE SITE AND MECHANISM OF MERCURY VAPOR RESORPTION IN THE LUNG. A STUDY IN THE GUINEA PIG USING MERCURIC NITRATE Hg2O3. Arch. Environ. Health, 18(1):42-50, Jan. 1969. The percentage of whole-body mercury found in the lungs of guinea pigs exposed to mercury vapor for ten minutes was in the same range as after one hour's exposure (25% to 33%). The highest concentrations of mercury were found hi peripheral lung structures. The same distribution was found at different concentrations of mercury in the air. Only one tenth of the values were found in corresponding structures of animals injected with mercuric nitrate. Most of the mercury deposited in alveolar tissues is therfore probably deposited there directly from the air. The results are considered to in- dicate the following: That mercury vapor penetrates to the al- veoli; that most of it is quickly transferred to the blood; and that a small fraction is deposited in the pulmonary tissues, from where it is slowly eliminated to the rest of the body. (Author's Abstract) 13035 Kudsk, F. Nielsen UPTAKE OF MERCURY VAPOUR IN BLOOD IN VIVO AND IN VITRO FROM HG- CONTAINING ADX. Acta Pharmacol. Toxicol., 27(2-3): 149-160, 1969. 26 refs. Experiments were conducted to confirm previous results on mercury vapor absorption by the lungs in human subjects, to clarify the mechanism by which mercury vapor is taken up, and to explain the inhibitory effect of ethyl alcohol. Results showed that the respiratory dead space for mercury vapor in human subjects corresponds to the physiological dead space, which indicates a complete alveolar absorption of mercury vapor in the lungs. The rate of uptake of mercury vapor in blood in vitro was determined; the vapor was absorbed by the blood and plasma at a higher rate during the first hour. Results showed a pronounced inhibitory effect of ethyl and methyl al- cohol on the in vitro uptake of mercury vapor in blood, but isopropyl and n-butyl alcohol did not show similar inhibition. A possible involvement of the primary hydrogen peroxide- catalase complex or catalase only in the oxidation and uptake of mercury in erythrocytes was investigated, using aminotriazole as an inhibitor, either alone or in combination with methylene blue and glucose as a hydrogen peroxide- generating system. Aminotriazole had no effect Methylene blue alone, and especially in combination with glucose, caused a pronounced accelerated uptake of mercury in the erythro- cytes. (Author summary modified) ------- 32 MERCURY AND AIR POLLUTION 13154 Tada, Osamu ON THE METHODS OF EVALUATING THE EXPOSURE TO TOXIC SUBSTANCES BY ANALYZING THE METABOLITES IN THE BODY. (Tainai taisha sanbutsu n yoru yugaibutsu bakuro hyokaho). Text in Japanese. Rodo Kagaku (J. Sci. Labour, Tokyo), 45(4):171-183, 1969. 177 refs. Under certain conditions, the amount of toxic substance ab- sorbed by workers exposed to toxic air contaminants cannot be predicted from air analysis data. If the concentration of metabolites in tissue or excreta is proportional to that of the toxic substance in the air, the degree of adverse exposure may be evaluated by analyzing samples of expired air, blood, urine, or hair, with reference to atmospheric threshold limit values. Tests for assessing the level of exposure to carbon monoxide, mercuric vapor, inorganic lead, and chlorinated hydrocarbons are discussed. Of the various methods developed for determin- ing the carboxyhemoglobin level in the blood of workers ex- posed to carbon monoxide, the 20-second breath holding method is the most practical and convenient. If the determina- tion is carefully made, the urinary excretion of mercury can be used as an indicator of exposure to mercuric vapor. The ab- sorption of lead varies according to whether it is absorbed as fume or dust. Therefore, the degree of exposure should be evaluated by analyses of lead in urine or blood during repeated exposure. The storage of lead in the body can be determined by the increase in urinary excretion of lead following the ad- ministration of calcium ethylenediaminetetraacetate. The deter- mination of urinary excretion of alkaline-pyridine reactants is tentatively suggested as an indicator of exposure to chlorinated hydrocarbons. (Author abstract modified) 13446 Anbar, M. and M. Inbar THE EFFECT OF CERTAIN METALLIC CATIONS ON THE IODIDE UPTAKE IN THE THYROID GLAND OF MICE. Acta Endocrinol. (kobenhaven), 46:643-65 Aug. 1964. 21 refs. It has been reported that certain metal ions interfere with the iodine uptake in the thyroid. The effect of various metallic ca- tions on the iodine uptake into the gland was studied. Ten ex- perimental mice were used for each material to be examined. The metallic cations to be tested were administered in isotope form and traced by a radioactive tracer. The iodine uptake was calculated in terms of % of injected dose accumulated in the gland or as a concentration ratio. Ferric, cupric, mercuric, zinc, cadmium, and nickel ions at the dose level of 0.1 mil- limoles per kg body weight were found to decrease the uptake of iodine in the thyroid gland. Manganous ions exhibited a similar effect when the dose was doubled. A parallel decrease in fluoroborate could be demonstrated. This suggests an inter- ference at the stage of iodide accumulation. Cobaltous, cobal- tic, magnesium, beryllium, and zirconium ions were shown to have not effect on iodine uptake at the same dose level. The extent of influence upon thyroxine production was discussed. 13625 Lindberg, Walter AIR POLLUTION IN NORWAY. H. PUBLIC HEALTH ASPECTS OF AIR POLLUTION - A LITERATURE STUDY. (Den Alminnelige Luftforurensning i Norge. Luftforurensning som Helseproblem, en Litteraturstudie.) Translated from Norwegian. Oslo Univ. (Norway), p. 66-77, 1968. This presentation discusses functional and anatomical changes arising from diseases caused by air pollution. The discussion includes air pollution episodes, pollutants known to cause specific effects (arsenic compounds, mercury, beryllium com- pounds, manganese compounds, and lead). Lead and carbon monoxide are discussed in greater detail. Emphasis is also placed on respiratory irritations caused by S02, nonspecific upper respiratory diseases, the effect of air pollution on the occurrence of colds, smoking, chronic bronchitis emphysema, bronchial asthma, lung cancer, and heart disease. 17470 Shirakaw, Kenichi SYMPTOMS OF NERVE TROUBLE DUE TO PUBLIC NUISANCE. HEAVY METALS AND ORGANIC SOLVENTS. (Kogai niyoru shinkeishojo. Jukinzoku to yukiyozai). Text in Japanese. Nippon Rinsho (Japan Clin.), 28(3):551-555, March 10, 1970.10 refs. Characteristic symptoms of heavy metal and organic solvent poisoning are discussed, with emphasis on representative neural symptoms. Motor symptoms identified with inorganic lead poisoning are paralysis of the arms, mononeuritis, and polyneuritis, the latter characterized by sharp contractions of the legs and arms. Early symptoms of alkyl lead poisoning are chronic fatigue, headache, and vertigo. These are followed by muscular ache, low fever, perspiration, low blood pressure, feeble pulse, and declining mental faculties, which are defined as nerve debility at the serious stage. Arsenic poisoning manifests itself in catarrh of the digestive and respiratory or- gans and in neuritis and skin disease. In arsenic poisoning, perceptive nerve troubles appear after one or two weeks' ex- posure, followed by mental derangement and, in some cases, pain, resulting in the loss of sensation of movement. Barium poisoning is considered a cause of alopecia and polyneuritis. Acute cases exhibit fever, skin disease, alimentary and mental disorders, in addition to respiratory diseases. The latter can result in death. Chronic inorganic mercury poisoning is accom- panied by vertigo, insomnia, and heart acceleration. Organic mercury poisoning exhibits diverse symptoms, including con- centric constriction of the visual field. Immediately following ingestion, manganese produces hallucination and mental disor- ders. Chronic manganese poisoning manifests in symptoms resembling those of Parkinson and Wilson's disease. Tin poisoning does not appear to remarkably influence neural or- gans, though alimentary disorders can result from prolonged exposure. Symptoms of cadmium poisoning, in addition to those of organic solvents, are briefly reviewed. 18036 Berlin, Maths, Jerry Fazackerley, and Gunnar Nordberg THE UPTAKE OF MERCURY IN THE BRAINS OF MAM- MALS EXPOSED TO MERCURY VAPOR AND TO MERCU- RIC SALTS. Arch. Environ Health, 18(5): 719-729, May 1969. 8 refs. Rats, rabbits, and monkeys were exposed to mercury vapor (1 mg/cu m) for four hours, and uptake and distribution of mer- cury in the brain was compared with that of animals injected intravenously with the same dose of mercury as mercuric salts. Vapor-exposed animals showed a brain content about ten times higher than the injected animals. The results indicate that the higher uptake in brain following vapor exposure is a general phenomenon in mammals. (Author's Abstract) 18128 Hallee, T. James DIFFUSE LUNG DISEASE CAUSED BY INHALATION OF MERCURY VAPOR. Am. Rev. Respirat. Diseases, 99(3):430- 436, March 1969.15 refs. ------- G. EFFECTS-HUMAN HEALTH 33 Acute exposure of a five-member family to varying amounts of mercury vapor is reported. Severe interstitial pneumonia and hypoxemia developed in the father, who was most af- fected. Pulmonary function studies performed 25 days after exposure revealed moderate restrictive lung disease and mild hypoxemia. He was treated with oxygen, antimicrobial drugs, and dimercaprol (BAL). Because of continued dyspnea on ex- ertion five months after exposure and evidence on arterial blood gas analysis of intrapulmonary shunting, a lung biopsy was performed. The biopsy revealed minimal interstitial fibro- sis, and the patient remained mildly dyspneic on exertion 1 year after exposure. Symptoms and treatment of the other members of the family are given. 18247 Kudsk, F. Nielsen FACTORS INFLUENCING THE IN VITRO UPTAKE OF MERCURY VAPOUR IN BLOOD. Acta. Pharmacol. Toxicol. (Copenhagen), 27(2-3):161-172, 1969. 24 refs. The influence of a number of factors on the in vitro uptake of mercury vapor in blood was investigated to clarify the mechanism by which mercury is oxidized in the blood. The rate of mercury uptake was moderately increased in a pure ox- ygen atmosphere, but decreased in a nitrogen atmosphere when compared with the rate of uptake in atmospheric air. Both methylene blue and menadione, in high concentrations, were found to increase the rate of uptake. Hydrogen peroxide generation and an increased oxidation rate of glutathione is a possible explanation for the acceleration of mercury uptake caused by these compounds. The menadione-stimulated uptake could be inhibited by low concentrations of ethyl alcohol. lodoacetate, in concentrations lower than .00025 M, inhibited the mercury uptake, while concentrations of .0005 M produced an uptake which was 2.5 times that of the normal. The in- fluence of potassium cyanide, sodium nitrate, hydroxylamine, ascorbic acid, sodium fluoride, and glutathione on mercury up- take in blood was investigated. The studies indicate that hydrogen peroxide and oxidized glutathione are important in the oxidation and uptake of mercury vapor. (Author summary modified) 19190 Ui, J., Kyoichi Sonoda, and Nobuko lijima PROGRESS OF 'KOGAT CONTROL AND PUBLIC OPINION. (PART ffl). (Kogaitaisaku no Keisei to Seron. (Sono III)). Text in Japanese. Kogai to Taisaku (J. Pollution Control), 6(6):409-417, June 15, 1970. Nearly 10 yrs ago, many persons died in Minamata as the result of eating fish poisoned by mercury discharges from a chemical plant. The deaths were unique and unprecedented, but six years passed before mercury was identified as the toxic agent. In the course of tracing the source of the mercu- ry, investigators were hampered by various objections and political pressures designed to withhold information from the public. As a result, public opinion became quiescent until a similar case of mercury poisoning occurred at Niigata. That the poisoning was repeated is viewed as characteristic of the Japanese attitude about public opinion and of the extreme ag- gravation of industrial pollution, which the social system ap- pears incapable of controlling. The two mercury poisoning episodes symbolize the conflicts between industry and local communities, capital and science, the right of local govern- ments and central bureaucratic power, society and power hol- ders and also the obstacles to research. 21113 Neville, G. A. TOXICITY OF MERCURY VAPOR. Can. Chem. Educ., 3(l):4-7, Oct. 1967. 33 refs. Threshold limit values have been set at 0.1 milligram/cu m for mercury vapor in the atmosphere and at 0.01 milligram/cu m for mercury organic compounds. Access to the body is gained mainly through the respiratory tract, but absorption may be also through the skin or by ingestion. A study of the metabol- ism of inhaled vapor in the rat indicated that after exposures of 5 hours to an Hg level of 1.4 milligrams/cu m, the metal was generally distributed in the body, becoming highly local- ized in the kidney with an accumulation after 15 days of 70% or more of the body burden. Mercury inhibits urease, inver- tase, and other enzymes carrying sulphhydryl groups; produces potassium ion loss; blocks glucose uptake by erythrocytes and muscle; causes lesions of the central nervous system; and influences bioelectric phenomenon by altering transmembrane potentials and by blocking nerve conduction. The most frequent manifestations of chronic poisoning are gin- givitis and stomatitis, tremor, and erethism, while death usually results from acute cases. Mercury spillages are most conveniently cleaned up with a filter flask, the side arm of which is linked by tubing to a water aspirator. The importance of thorough washing of the hands must be emphasized. 23012 Tsuchiya, Kenzaburo EPIDEMIC OF MERCURY POISONING IN THE AGANO RIVER AREA. AN INTRODUCTORY REVIEW. Keio J. Med., vol. 18:213-227, 1969. 10 refs. A review is given of the established data and of several hypotheses relating to the epidemic of methyl mercury poison- ing which affected 26 humans as well as large numbers of domestic animals in the Agano River delta, Niigata Prefecture, Japan. The outbreak started in 1964 and ended in July 1965. Most of the affected group, which included three females, were fishermen or a member of a fishermen's family. Data on mercury concentrations in hair, urine, and blood are given and the biological complex of humans, fish and environmental fac- tors is considered. Evidence indicates that fishermen, who only live near the river mouth, were the victims because they eat one kind of fish which cannot usually be marketed due to its boniness. In fish with higher concentrations of mercury, the mercury compound was most likely to be the agent of poison- ing was methyl mercury rather than inorganic mercury. Vari- ous hypotheses as to the source of the methyl mercury are critically reviewed. These theories relate to an earthquake that occurred several months before the epidemic, to two acetal- dehyde factories located along the river which supposedly discharge mercury into it, and to possible washout from pesti- cides. It is concluded that the source cannot be definitely established in the case of this particular epidemic. 26740 Epstein, Samuel S. ADVERSE BIOLOGICAL EFFECTS DUE TO CHEMICAL POLLUTANTS: GENERAL PRINCIPLES. H. POTENTIAL CARCINOGENICITY, MUTAGENICITY AND TERATOGENICITY, DUE TO COMMUNITY AIR POLLU- TANTS. In: Projec Clean Air. Children's Cancer Research Foundation, Boston, Mass., California Univ. Task Force, Vol. 2, App. M, 54p., Sept. 1, 1970. Ill refs. There is little doubt that many diseases hitherto regarded as spontaneous, including cancer, mutations, and birth defects, ------- 34 MERCURY AND AIR POLLUTION may have exogenous causes from environmental pollutants. This fear is accentuated by the exponential increase in human exposure to new synthetic chemicals-and their degradation and pyrolytic products in air, water and soil-which in general, are inadequately characterized both lexicologically and ecolog- ically. Two major classes of environment carcinogens may be identified: potent carcinogens, such as aflatoxins and nitrosamines, which can produce cancer in experimental animals, even at the very low levels in which they have been found in foods; weak carcinogens, such as atmospheric pollu- tants, certain pesticides and food additives, whose effects may easily escape detection by conventional biological tests. Ethyleneimines are good examples of highly mutagenic chemi- cals which are used for many purposes, including therapy of neoplastic and non-neoplastic diseases, insecticides, pigment dyeing and printing, fireproofing and creaseproofing of fabrics textiles. Three major categories of human teratogens have so far been identified: viral infections, x-irradiation, and chemi- cals, e.g., mercurials and thalidomide. Methods for predicting and monitoring adverse biologic effects are discussed, with particular reference to carcinogenicity, mutagenicity, and teratogenicity. 27085 Jordi, A. INDUSTRIAL TOXICOLOGY AND SOCIAL MEDICINE. (Gewerbliche Toxikologj und soziale Medizin). Text in Ger- man. Praxis (Bern), 57:785-793, June 4, 1968.18 refs. Toxicity of carbon monoxide increases as a result of various factor like fast smoking during the inhaling of air containing CO, reduction of partial oxygen pressure by other gases, or flying at altitudes of 3000 m. Since hypoxemia causes no sen- sation and gives no warning, the danger is especially great for automobile drivers and pilots. The gradual reduction of the leucocyte count has been known to physicians for 30 years. The count of 6000-8000 is no longer normal; today a count of 5000 is normal for urban populations. The causes, aside from exhaust gases, are various drugs like sulfonamides and an- tibiotics. Silicosis is still the most important occupational dis- ease in Switzerland today in spite of intensive prophylaxis. The incidence of pulmonary asbestosis has increased somewhat since 1940 as has the incidence of lung cancer in contrast to silicosis. As a result of the processing of already purifiied cotton and good ventilation, byssinosis has rarely been observed in Switzerland in spite of the size of the textile industry. It seems to be more frequent in the jute and hemp industries. The incidence of chronic lead poisoning is in second place among recognized occupational diseases. The symptomatology is reviewed. Also reviewed are incidence, symptoms and social implications of poisonings by beryllium, by mercury and by organic solvents. 27317 McGee, Lemule C. SOME OCCUPATIONAL DISEASE HAZARDS IN MUNI- TIONS MANUFACTURE. Trans. NatL Safety Congr., 31st, 1942, p. 3-8. (Oct. 29.) Some chemicals and solvents required in the manufacture of military powders and explosives have a toxic action on human tissues. Among them are trinitrotoluene, dinitrototulene, tetryl, mercury fulminate, nitrogen oxides, and acetone. The symp- toms produced by each of these compounds in exposed wor- kers are described. 27387 Mesman, Brick B. and Billy S. Smith DETERMINATION OF MERCURY IN URINE BY ATOMIC ABSORPTION, UTILIZING THE APDC/MD3K EXTRACTION SYSTEM AND BOAT TECHNIQUE. Atomic Absorption Newsletter, 9(4):81-83, July-Aug. 1970. 7 refs. A procedure is described for determining submicrogram quan- tities of mercury in urine. The method is based on the absorp- tion of the 2537 A mercury resonance line. The urine specimens are extracted by an ammonium pyrrolidine dithiocarbamate/methyl isobutyl ketone (APDC/MIBK) system and the MIBK extract is evaporated on a tantalum boat. The mercury is detected by an atomic absorption spectrophotome- ter. A 50-ml urine sample is required, which allows for many replicate runs. Accuracy of the method is 96 plus or minus 6%. (Author abstract modified) 27801 Davis, Wayne H. POLLUTION: WHENCE AND WHITHER. Arch. Environ. Health, vol. 21: 3-4, July 1970. 4 refs. Earth is the test tube and as numbers of people continue to rise, pollution and other toxic products of our civilization will destroy the entire ecosystem. Mercury, lead, carbon monox- ide, oxides of sulfur and nitrogen, pesticides, herbicides, and radioactive wastes are some of the toxins which have already caused serious trouble. The most important factor concerning a toxin is concentration. Concentrations of DDT and its metabolites in the environment have nearly eliminated the brown pelican, Bermuda petrel, osprey, peregrine falcon, and the eastern bald eagle. A fundamental law of ecology is that the more species in a community the more stable it is. The starfish population explosion which is destroying the coral atols and threatening wave erosion loss of islands from Hawaii to Australia probably results from man's effects on the ecosystem, most likely his use of DDT. Concentrations of a few parts per billion of DDT inhibit photosynthesis in marine algae. Such algae not only are the base of the food chain upon which marine animals are dependent, but they also provide most of our oxygen. The food production advocates say that the underdeveloped nations must increase pesticide usage six- fold in order to feed themselves. Since these nations are the poorest and DDT the cheapest, that pesticide will be used. Rise in the human population means destruction to all. 28013 Armstrong, David W. THE QUANTITATIVE ANALYSIS OF THE MERCURY CON- TENT OF URINE BY A SPECTROGRAPHIC METHOD. Public Health Bulletin, no. 263:106-110, 1941. Reproducible values of mercury in urine were obtained by a spectrograpbic method in which sections of a special spectro- graphic graphite rod served as electrons. Both anodes and cathodes were drilled to a depth of five-eighths in. to receive the urine sample. This crater depth retarded excitation suffi- ciently to obtain a satisfactory photographic record. Thallium was used as an internal standard, and an exposure of 20 se at 22 amperes was found to be sufficient to volatilize the mercu- ry and thallium completely. Under these conditions, the lowest value consistently attained by the analysis of prepared stan- dards was 0.1 mg Hg/1 (0.04 gamma of elemental mercury in the arc). The intensity of the radiation that produced the opti- cal density of the exposed and processed photographic plate was determined from a prepared calibration curve. The spec- trographic values are in good agreement with chemical values. ------- G. EFFECTS-HUMAN HEALTH 35 28030 Goldman, F. H. THE QUANTITATIVE CHEMICAL ANALYSIS OF MERCU- RY IN AIR, URINE, TANK WATER, AND SETTLED DUST. Public Health Bulletin, no. 263:111-118 1941. 14 refs. A series of experiments was conducted to determine whether mercury compounds passed into the air when carroted fur was treated with hot water in a manner which approximated certain operations regularly carried on in hat factories. It was found that mercuric nitrate could be recovered from the vapors released by moist carroted fur maintained at the temperature of boiler water. Becaus it appeared that there might be more mercury in the air in hatting factories than could be measured by the Nordlander instrument, a sampling method was devised for collecting both mercury vapor and mercury compounds for electrolytic analysis. The method includes treatment of a sam- ple with chlorine and then with lead and hydrogen sulfide. A gold cathode and a platinum anode are used for electrolysis, while the current is obtained from a 6-volt storage battery hooked up in a series with a variable 60-ohm resistance. From this circuit, 1.3-1.5 volts are drawn off in the usual way. Addi- tion of lead to the solution instead of copper considerably les- sens the danger of contamination of mercury at the cathode. 28846 Sayers, R. R. TOXICOLOGY OF GASES AND VAPORS. In: International Critical Tables of Numerical Data, Physics, Chemistry and Technology. Edward W. Washburn (ed.), vol. 2, New York, McGraw-Hill, 1927, p. 318-321.14 refs. Toxicological factors are presented for acrolein, ammonia, aniline, arsine, benzene, bromine, carbon disulfide, carbon dioxide, carbon monoxide, carbon tetrachloride, chlorine, chloroform, chloropicrin, dichlorodiethyl sulfide, hydrogen chloride, hydrogen cyanide, hydrogen sulfide, iodine, mercury, nitrogen oxides, nitrobenzene, phosgene, phosphorus trichloride, phosphine, sulfur dioxide, sulfur trioxide, and toluidine. These factors include boiling point, concentration percentage fatal in 30 min or less, percentage causing dan- gerous illness in 0.5 to 1 hour, percentage that can be borne without severe effects for 0.5 to 1 hour, maximum safe con- centration, physical properties, portal of entry, symptoms, and occupations. An outline is also given for the prevention and emergency treatment of gas poisoning. 29255 Karimova, L. K. THE CLINICAL ASPECTS OF GRANOSAN POISONING. Inst. of Hygiene of Labor and Industrial Diseases, Leningrad (USSR), 9p. Translated from Russian. Several cases of poisoning due to the accidental use in food of grain treated with ethylmercurychloride were diagnosed among families of collective farm workers. The clinical picture presented by the disease was similar to that found in diethyl- mercurophosphate poisoning: patients exhibited gastroin- testinal disorders, marked adynamia, general exhaustion, and functional disturbances of the central nervous system. The presence of the disease was confirmed by the continuous excretion of mercury in urine. A gradual improvement in the condition of the patients was noted following intravenous in- jection of glucose with vitamins Bl and C and subucaneous in- troduction of unithiol, a new synthetic preparation recom- mended as an antidote in cases of arsenic and mercury poison- ing. 29276 Stock, Alfred CHEMICAL CONTRIBUTION TO THE UNDERSTANDING OF MERCURY INTOXICATION. (Chemische Beitraege zur Kenntnis der Quecksilbervergiftung). Text in German. Ber. Deut. Chem. Ges., 75(12), Pt. 8:1530-1535, 1942. 28 refs. Chronic intoxication with mercury resulting from exposure to low concentrations of mercury vapors over an extended period of time was studied to explore the mode of reaction of Hg in the organism. The analytical method developed by I. Bodnar and E. Szep was used for the determination of small quantities of Hg after the colorimetric method failed. Hg is an om- nipresent element generally at a level of the order of mag- nitude of 1-10 gamma Hg/lOOg. Humans eliminate daily 0.1-1 gamma Hg in urine. Inhaled Hg is much more toxic than in- gested Hg. Poisoning develops over a long time but once over- sensitivity develops the smallest quantity of Hg will result in characteristic depression. All means designed to neutralize Hg in the body have failed. Most of the inhaled Hg vapor remains in the nose and the upper respiratory tract; the remainder reaches the lungs. The mucous membrane swells and a catarrh develops. Hg is absorbed easily because it is quickly oxidized by blood to HgO. The kidneys store Hg from the body fluids and release it only slowly. A smaller accumulation also occurs in the liver and glands of inner secretion, especially in the hypophysis and the bulbi of olfactorii. The normal content of Hg in human muscle tissue was found to be about 0.5 gamma Hg/100 g, 2 gamma in the brain, and 10 gamma in the kidney and in the hypophysis. 30308 Sasa, Tsurayuki, Kunio Aso, Fumio Kida, Jugoro Takeuchi, Tadao Tsubaki, Haruhiko Tokuomi, Toshio Toyama, Noboru Hagino, Tosbiyuki Fujino, Masakichi Mikuni, Isamu Murata, and Ukichi Ishibashi STUDY ON THE RANGE OF DISEASES BY ENVIRONMEN- TAL POLLUTION. (Kogai no eikyo ni yoru shippei no hani to ni kansuru kenkyu). Text in Japanese. Japan Public Health As- soc., 48p., March 1970. A committee was organized to investigate problems concerning the names of diseases, their deuteropathy, and test items, which are the objects of the health injury assistance scheme. Particular attention was given to diseases caused by air pollu- tion, organic mercury compounds, and cadmium. Bronchial asthma, chronic bronchitis, asthmatic bronchitis and vesicular emphysema were selected as the names of diseases caused by air pollution. It was decided that their secondary symptoms should be treated collectively as deuteropathy. For diagnosis, Fletcher s definition for chronic bronchitis, the American Thoracic Society s definition for vesicular emphysema were used. Fifteen test items of pulmonary function and chest direct radiography were selected. Diseases caused by organic mercu- ry compounds are called Minamata disease. As the attentive points for diagnosis, 11 items for congenital Minamata disease, two items for the acquired disease, and three other items (visual field, eye ground, and exact hearing tests) are con- sidered essential for examination. The disease caused by cad- mium injury was called Itai-itai disease for which five diag- nostic items and ten items, such as blood test, chest x-ray, and urinalysis were selected for necessary examination. ------- 36 MERCURY AND AIR POLLUTION 31224 Mustafa, Mohammad G., Carroll E. Cross, and Walter S. Tyler INTERFERENCE OF CADMIUM ION WITH OXIDATIVE METABOLISM OF ALVEOLAR MACROPHAGES. Arch. In- ternal Med., 127(6):1050-1058, June 1971. 67 refs. (Presented at the Hanford Biology Symposium on Pollution and Lung Biochemistry, Annual, 10th, Richland, Wash., June 1970.) The effects of a number of divalent cations, especially cadmi- um, on certain aspects of oxidative and energy metabolism of alveolar macrophages are reported. The pulmonary alveolar macrophages possess metabolic pathways operative predomi- nantly in the aerobic environment These cells consume 0.15- 0.2 micromolar 02/mg protein/sec in vitro. Mitochondria from these cells show a respiratory rate of 0.5-0.6 micromolar 02/mg protein/sec for succinate as a substrate. Mitochondria! oxida- tion is coupled to phosphorylation; adenosine diphosphate: ox- ygen ratios are approximately two for flavin-linked and three for pyridine nucleotide-linked substrates. The cadmium ion ad- versely affects the respiration of alveolar macrophages. It completely inhibits macrophage mitochondria! oxygen uptake at 50 micromolar concentrations and uncouples oxidative phosphorylation at five micromolar concentrations. This and several other divalent cations, such as copper, mercury, stron- tium, and zinc, also inhibit the adenosine triphosphatase activi- ty of alveolar macrophages. Since metal fumes and oxides are common air pollutants, a study of this sort may provide infor- mation on mechanisms, at the biochemical level, as to how toxic inhalants initiate pulmonary pathology. (Author abstract modified) 31280 TRACE METALS: UNKNOWN, UNSEEN POLLUTION THREAT. Chem. Eng. News, 49(29):29-30. 33, July 19, 1971. Because no metal is degradable, toxic metals in the environ- ment (such as cadmium, lead, nickel, tin, mercury, and ar- senic) may be a more insidious problem than pollution by pesticides, sulfur dioxide, nitrogen oxides, carbon monoxide, and other gross contaminants. Public health experts are con- cerned that subtle physiological changes caused by trace metals may go completely undetected or, if detected, be at- tributed to other causes. The problem is how to detect harmful responses to very low doses of trace metals and how to dif- ferentiate adaptive responses from those representing the first stages of a disease. Also, synergistic and antagonistic relation- ships among trace metals must be defined. Until these questions and relationships are mor thoroughly explored, stan- dards for trace metals in air, water, and food residue will be little more than guesses. Sources and health effects of some trace metals considered hazardous are summarized. 31543 Goulding, Roy CONTAMINATION IN COUNTRYSIDE AND HOME. J. Roy. Coll. Physicians, 5(4):374-378, July 1971. 9 refs. Without doubt, in a single, acute overdose, the organochlorine insecticides can be manifestly toxic, causing stimulation of the central nervous system and epileptiform seizures. This group of chemicals is inordinately stable both chemically and biologi- cally. This is an advantage to an insecticide. However, this very persistence also leads to transfer throughout the food chain, from flora to fauna and from one creature to another, with a tendency to ultimate accumulation in carnivorous spe- cies. More recently, the use of organic mercury compounds as commercial fungicides has expanded enormously, and on the farm they remain unsurpassed. In Japan a few years ago, the geographically named Minamata disease provided an arresting outbreak of organic mercury poisoning in an island communi- ty. Certain organic arsenic compounds are widely used as growth promoters in the rations of farm livestock, and the possibility of an environmental accumulation thus emerges. 31624 Brune, Dag LOW TEMPERATURE IRRADIATION APPLIED TO NEUTRON ACTIVATION ANALYSIS OF MERCURY IN HUMAN WHOLE BLOOD. Aktiebolaget Atomenergi (Stockholm), 7p., 1966. 11 refs. The distribution of mercury in human whole blood has been studied by means of neutron activation analysis. During the ir- radiation procedure the samples were kept at low temperature by freezing them in a cooling device in order to prevent inter- ference caused by volatilization and contamination. The mer- cury activity was separated by means of distillation and ion exchange techniques. The values from 20 samples were nearly consistent with a skew distribution; the median, amounting to 0.011 microgram/g, was consequently chosen to represent the central value. Expressed as the ratio of the highest and lowest values, the range of the mercury concentrations corresponded to a factor of eight. (Author summary modified) 31629 Eybl, V., J. Sykora, and F. Mertyl THE INFLUENCE OF SODIUM SELENTTE, SODIUM TEL- LURTTE, AND SODIUM SULFTTE ON THE RETENTION AND DISTRIBUTION OF MERCURY IN MICE. Arch. Tox- ikol., vol. 25:296-305, 1969. 20 refs. Translated from German. Mundus Systems, McGregor, and Werner, Washington, D. C., lip. The retention and distribution of mercury were studied in ex- periments with mice during a four week period following the intravenous administration of mercuric chloride (Hg—230) and the subcutaneous application of sodium selenite, sodium tellu- rite, and sodium sulfite. Both sodium selenite and sodium tel- lurite caused a long term retention of mecury in the organism and altered the distribution of mercury in the organs. Sodium sulfite did not influence mercury retention, and caused only insignificant changes in the distribution of mercury. The effect of these compounds depended upon the redox potentials. Sodi- um selenite and sodium tellurite are reduced in the organism, and form compounds of a colloidal nature with mercury which are retained in the organism. (Author summary) 31705 Bederka, John P., Jr. ON THE TOXICITY OF OUR ENVIRONMENT. J. Med. As- soc. Thailand, 54(5):335-348, May 1971. 45 refs. Environmental pollution is considered with respect to sulfur dioxide, smog nitrogen dioxide, carbon monoxide, participates, and chlorinated hydrocarbons. Studies on the public health ef- fects of atmospheric pollutants are summarized, as are studies on the metabolism of DDT and its effect on 'animals (on reproduction and mortality). Also noted are the increasing at- mospheric concentrations of heavy metals such as mercury, beryllium, lead, copper, and cadmium. Also, the additive and/or synergistic effects of air pollutants are pointed out. Special attention is given to altered metabolic patterns produced by increasing levels of insecticides in the body and to the fact that lipid soluble organochlorine substances are concentrated in passing up the food chain. ------- G. EFFECTS-HUMAN HEALTH 37 32218 Jung, Fritz THE PATHOLOGY OF ERYTHROCYTES. PART II. THE EF- FECTS OF SOME METAL SALTS. (Zur Pathologic der roten Blutkoerperchen. II. Mitteilung. Wirkungen einiger Metall- salze). Text in German. Arch. Exp. Pathol. Pharmakol., vol. 204:139-156, 1947. 14 refs. Part I. Klin. Worchshr., p. 917, 1942. The effects of zinc sulfate, and lead nitrate on isolated human erythrocytes was studied by means of an ultramicroscope and a potentiometer. High concentrations of mercury chloride caused fixation of erythrocytes and of erythrocytal stromata without significant optical structural changes. At lower HgC12 concentrations, all degrees from the outside to the inward progressing fixation of cellular proteins were observed ultram- icroscopically. Very low concentrations precipitated hemoglobin inside the cell with a simultaneous increase of osmotic resistance. Increasing concentrations brought about progressive hemolysis based on membranal denaturation. This was followed by a coagulation of the uppermost cellular layers coupled with a liberation of the central hemoglobin residue which can also form a circular coagulate within the fixated membrane. The minimal amount of sublimate per cell still causing hemolysis is about 1.2 times 0.00000001 molecules. In contrast in HgC12, ZnS04 and Pb(N03)2 cause only increased rigidity of the membrane. Lead hydroxide and lead phosphate is adsorbed on erythrocytal membranes. The embedding of lead in the membrane can be observed ultramicroscopically. 32546 Fukuda, Katsuhiro EXPOSURE MODE TO MERCURY VAPOR AND BODY BURDEN IN THE RAT AND ITS DECREASING PATTERN. (Ratio eno suigin joki no bakuro yoshiki to suigin no tainai bunpu narabini sono gensho pattern ni kansuru jikkenteki ken- kyu). Text in Japanese. Nippon Eiseigaku Zasshi (Japan J. Hyg.), 26(2):257-263, June 1971. Determinations were made of the mercury content in the tis- sues of rats exposed to mercury vapors. One group was ex- posed to 6.0 mg/cu m/hr, 3.0 mg/cu m/hr, and 1.5 mg/cu m/hr. Another group was exposed to 1.0 mg/cu m/6hr, 1.0 mg/cu m/3hr, and 1.0 mg/cu m/1.5hr. Each exposure was continued five days a week for two to four consecutive weeks. Quantita- tive mercury determination was performed by a dithizone method. Mercury concentration in the lungs was higher at the end of the period of exposure for those rats in the high con- centration-short term exposure group than for those rats in the low concentration- long term group. However, other body tis- sues of rats in the first group had lower mercury concentra- tions than those in the second group. When the meircury con- tent of the rats in the 1.0 mg/cu m/6hr group was measured for 16 weeks after the termination of mercury exposure, the mer- cury content was observed to decrease linearly on a semilogarithmic scales. The half time of mercury was about 13 days in the lung and about 210 days in the brain. (Author ab- stract modified) 32608 Fairhall, Lawrence T. INORGANIC INDUSTRIAL HAZARDS. Physiol. Rev., 25(1):182-202, Jan. 1945. 191 refs. The effects of long continued exposure to relatively low con- centrations of inorganic metal compounds are discussed in connection with industrial hygiene. The diagnosis of lead poisoning may be difficult. The usual symptoms are colic, basophilic stippling of the erythrocytes, urinary excretion of lead palsy, and anemia. However, any one or several of these may be absent, and thus make diagnosis doubtful. Poisoning by mercury, where it is not acute, is slow and insidious and leads to impairmen of tissue functions. The symptoms of cad- mium poisoning are increased salivation, choking attacks, vomiting, abdominal pain, diarrhea, and tenesmus. Manganese poisoning is relatively rare in industry; it is a crippling disease with permanent disability, particularly of the legs. The in- creased use of beryllium has led to several cases of severe poisoning. The effects of molybdenum and tungsten com- pounds are briefly discussed. Although antimony and arsenic are usually regarded as having comparable toxic qualities, the toxic effects of arsenic are believed to outweigh those of an- timony. Antimonal poisoning does not appear to be an indus- trial disease of any consequence. Uranium and its salts are highly toxic. The absorption of small amounts over long periods of time causes a chronic nephritis. The effects of mag- nesium, zirconium, selenium, tellurium, vanadium, and chro- mates are also described. 32936 Goldwater, Leonard J. MERCURY IN THE ENVIRONMENT. Sci. Am., 224(5):15-21, May 1971. The natural cycle of circulation of mercury on the earth disperses it widely through the habitable spheres in trace amounts that pose no hazard to life. The use of cinnabar as a coloring agent and of mercury compounds in Pharmaceuticals under careful control introduce no threat to the quality of the environment. With the development of other applications, however, particularly in industry and agriculture, serious problems have arisen. In Minamata Bay (Japan) the substances that had poisoned the fish and people were identified as methyl mercurials. The grain that caused outbreaks of illness and death among the farmers of Iraq had been treated with ethyl mercury p-toluene sulfonanilide, and alkyls of mercury were similarly incriminated in Sweden and other places. Alkyl mercury can cause congenital mental retardation, while recent laboratory studies have shown that it can produce abnormali- ties of the chromosomes, as well as cerebral palsy. Mercury has a strong affinity for sulfur, particularly for the sulfhydryl groups in proteins. Bound to proteins in a cell membrane, the mercury may alter the distribution of ions, change electric potentials and thus interfere with the movement of fluids across the membrane. There are also indications that the bind- ing of mercury to protein disturbs the normal operation of structures such as mitochondria and lysosomes within the cell. The extent of man s exposure to mercury is considered, as well as his response to this threat. Mercury concentrations in the air and foods such as milk, meats, vegetables, eggs, and fruits have been measured. 33504 Battigelli, M. C. MERCURY TOXICITY FROM INDUSTRIAL EXPOSURE. A CRITICAL REVIEW OF THE LITERATURE - PART L J. Occupational Med., vol. 2:337-344, July 1960. 67 refs. Data from animal experiments and observations of human cases are analyzed in relation to the variables of intake and subsequent handling by the body of mercury in different forms. Industrial exposures include the mining and refining of ore containing cinnabar (mercurous sulfide); the manufacture of felt hats, technical instruments, carbon brushes for electri- cal equipment, and certain fluorescent lamps; and the use of mercury paints. The degree of intoxication produced by mer- cury is determined by the amount and rate of absorption. ------- 38 MERCURY AND AIR POLLUTION physiochemical properties of the absorbed compound, and in- dividual susceptibility. Neither the amount of mercury that constitutes a harmful total body burden nor the amount that is safely tolerated is known with satisfactory precision for hu- mans. The metabolism of mercury in the blood, brain, kidney, liver, and intestine is discussed. It is known that mercury develops chemical associations with various substances in the blood. There is a poor correlation between the amount of mer- cury localized in a given tissue and pathological changes. The matter is further complicated by the fact that mercury may be found in impressive concentrations in the tissues of persons with no identifiable intake of this substance. The diuretic ef- fect of mercurials stems from their inhibition of succinic dehydrogenase within kidney cells. The ultimate effect of mer- cury and its compounds is very probably based on the capaci- ty of these substances to inhibit enzymes. 33868 Tejning, Stig THE PROBLEM OF MERCURY IN SWEDEN. (Kvicksilver- fragen i Sverige). Preprint, Swedish Dept of Agriculture, 1965, p. 80-91. Translated from Swedish. Scientific Translation Ser- vice, Santa Barbara, Calif., 19p. (Presented at the Swedish De- partment Agriculture, Conference on Mercury, 1965.) The effects of metallic quicksilver, an inorganic mercury salt, and the alkyl mercury compounds are compared. In 1953, cases of a mysterious nervous disease began to appear among the population of the city of Minamata, Japan. The suspicion that it could be alkyl mercury poisoning was confirmed when the patients were found to be excreting mercury in their urine for the first five months after becoming ill. Further investiga- tion revealed that a chemical plant which used mercury com- pounds as catalysts had released waste products into the Mina- mata Bay, and several types of fish subsequently were found to have a high mercury content. Feeding experiments were conducted with six month old white leghorn hens which were given 12.5, 25, and 50% Panogen treated grain. In the groups whose feed contained 25 and 50% Panogen, both food con- sumption and egg production decreased. Alkyl mercury poisoning in wild pheasants is also discussed. 34621 Bittersohl, G. EXPOSURE TESTS FOR EVALUATION OF THE FITNESS. (Die Durchfuehrung von Expositionstests fuer die Beurteflung der Tauglichkeit). Text in German. Z. Ges. Hyg. Hire Grenz- gebiete (Berlin), 17(10):727-730, Oct. 1971. Exposure tests are necessary for determination of the fitness of workers operating in a polluted surrounding. They have even greater importance nowadays, since atmospheric pollu- tion may have already affected the worker before he starts his work. Urine samples are of lesser value, since the collection of a 24-hour sample is hardly feasible in practice. Moreover, for many pollutants, such as mercury, no direct relationship between discharge quantity and blood or organ level exists. For many pollutants the examination of the saliva is of im- portance, such as bromides. Many pollutants are discharged again by expiration, for example, gases or solvents. The analy- sis of the expired air is still in a trial state. Measuring the car- bon monoxide concentration in the expired air by a breathing bag, test tube, or chemical and physical methods seems to be promising. The best information is gained by analysis of body fluids and organs, such as blood and serum. For metals and metalloids, hair and finger nails are important storage places. The most accurate method is the CO determination according to the Uras principle. Of great value are tests which confirm the reaction of an organism with the pollutants, such as the delta-aminolaevulinic acid discharge in the urine and methaemoglin formation. 34682 Adamo, Mario TOXICITY OF MERCURY VAPORS UNDER VARIOUS EN- VIRONMENTAL CONDITIONS. (La tossicita dei vapori di mercuric in deverse condizioni ambientali). Text in Italian. Rass. Med. Ind., vol. 10:684-690, 1939. 7 refs. Guinea pigs kept in confined and humid environments, and subjected to inhalation of mercury vapor for two hours daily, quickly (after three-seven hours of treatment) grew sick and died. Toxicity was practically absent in guinea pigs subjected to inhalation of Hg vapors in dry and well ventilated environ- ments, for as long as 50 hours. The results suggest that the fast toxic action exerted by the Hg vapors when inhaled in humid environments is actually due to the indirect effect of carbon monoxide. The latter, being soluble in water, is easily absorbed by the animals; accordingly, it induces respiratory stimulation and a subsequent fast rate of absorption of the agent being tested. Work areas contaminated with Hg vapors should be well ventilated and dry in order to protect the health of the workers. 34756 Neal, Paul A. MERCURY POISONING FROM THE PUBLIC HEALTH VIEWPOINT. Am. J. Public Health, 28(8):907-915, Aug. 1938. 9 refs. (Presented at the American Public Health Association, Annual Meeting, 66th, New York, Oct. 5, 1937.) Principal industrial sources include mining, chemical processing, and the manufacture of felt hats, electrical equip- ment, phannaceuticals, photography supplies, and explosives. Mercury can enter the body by inhalation of vapor or finely divided dust, by ingestion, through the skin, and through the subcutaneous tissues. The symptomatology of chronic mercuri- alism falls into two types, one with stomatitis, colitis, and nephritis predominating, and the other with tremor and other neurological symptoms most characteristic. The quantity of mercury in the air sufficient to cause chronic mercurialism cannot be definitely stated. Age, sex, individual susceptibility, and the physical condition of the individual play some part in determining the reaction to mercury-vapor exposure. The prevention of industrial mercurialism consists primarily in avoiding the inhalation of mercury vapors and dusts. This is an engineering as well as a medical problem, requiring special local exhaust ventilation, good natural and mechanical ventila- tion, good housekeeping, general sanitation, and in certain oc- cupations, positive pressure masks. 34789 Witschi, Hanspeter DESORPTION OF SOME TOXIC HEAVY METALS FROM HUMAN ERYTHROCYTES IN VITRO. Acta Haematol., vol. 34:101-115, 1965. 21 refs. Human red cells were incubated in vitro with lead-210, mercu- ry-203, and thallium-204 and thereafter washed repeatedly with different washing liquids; the desorption of these metals from the erythrocytes was determined. Lead was removed from the erythrocytes to a greater extent by repeated washings in their own plasma than in pure inorganic medium. In a heterogenous mixture of alpha- and beta-globulins including lipoproteins, even more lead was desorbed from the cells than in plasma, albumin or gamma-globulin solutions. It is supposed, there- ------- G. EFFECTS-HUMAN HEALTH 39 fore, that lead is bound at least partly to the deeper layers of lipoproteins, lipids, and/or smaller thiols of the outer surface. the plasma protein film on the erythrocytic surface. On the Thallium apparently shows no definite predilection to binding other hand, mercury was observed to be rather fixed to sites either in the plasma or in cells. ------- 40 H. EFFECTS-PLANTS AND LIVESTOCK 17710 Thomas, Moyer D. and Russel H. Hendricks EFFECT OF AIR POLLUTION ON PLANTS. In: Air Pollu- tion Handbook. P. L. Magil, F. R. Holden, and C. Ackley (eds.), New York, McGraw Hill, 1956, Sect. 9,44p. 129 refs. The effects of sulfur dioxide, hydrogen fluoride, chlorine, hydrogen chloride, nitrogen oxides, ammonia, hydrogen sul- fide, hydrogen cyanide, mercury, ethylene, and pesticides on plants are surveyed, with special attention to effects on alfal- fa, barley, and wheat. Damage to crops in Los Angeles Coun- ty has been estimated at $500,000 yearly. The toxicity of sul- furous acid is attributed more to its reducing properties than to its acidity. (It is 30 times as toxic as sulfuric acid.) Analysis of plants for total sulfur and sulfate sulfur is a possible method of diagnosing sulfur dioxide injury. The relative sensitivities to sulfur dioxide of 90 cultivated plants and 29 native plants are given (alfalfa sensitivity equals 1.0). Time-concentration and yield-leaf-destruction equations are discussed. Hydrogen fluoride is poisonous to gladiolus and iris, to various types of grain, to pines and other coniferous trees, and some fruit trees. Susceptibility varies widely, even among species of the same plant. Some varieties of gladiolus are highly susceptible; others are highly resistant. Coal smoke as a source of at- mospheric fluoride should not be neglected. Fluoride content of certain types of coal can be high as 295 ppm. In areas near Pittsburgh, readings of as high as 269 ppm of fluoride have been registered in tree leaves, and 53 ppm in grass. The effect of smog on plants is discussed, including a tabulation of the sensitivity of 47 plants cultivated in southern California and of 52 plants native to the area. The chemical composition of smog is also analyzed. 19770 Dieman, et al. ON THE ACTION OF MERCURY ON VEGETABLE LIFE. (Sur 1'action due Mercure sur la vie vegetale). Anal. Chem., vol. 22:122-127, 1797. Translated from French. Belov and As- sociates, Denver, Colo., 4p., June 2, 1970. Several experiments were conducted to determine the effects of mercury and mercury oxide on plants. When mint and bean plants were placed next to a bottle of mercury, the leaves and stems were covered with black spots on the third day, and then turned completely black. A mint plant and mercury were placed under a bell-glass whose sides were coated with sulfur. The plant remained intact, indicating that sulfur prevents the harmful effects of mercury. No damage was observed when the mercury was covered with water. The experiments also showed that mercury is not harmful unless it is mixed with water or soil, or is in contact with the roots of the plants. Mer- cury oxide killed a mint plant when placed in contact with the roots. Beans planted in soil mixed with mercury oxide became feeble and disfigured; beans planted in a mixture of soil and lead oxide continued to grow and were four times as strong as those grown in soil and mercury oxide. 20158 Zimmerman, P. W. CHEMICALS INVOLVED IN AIR POLLUTION AND THEIR EFFECTS UPON VEGETATION. Proc. Governor's Conf. Ex- hibit Atmospheric Pollution New Jersey, 1952, p. 23-31. 33 refs. (Feb. 19-20.) Results of studies on the effects of various gases on plants are summarized for sulfur dioxide, hydrogen fluoride, chlorine, hydrogen sulfide, ammonia, mercury vapor, ethylene and car- bon monoxide, and the vapors of 2,4-D and other hormone- type chemicals. Measurements of the atmosphere at Yonkers, New York, show an average of 0.01 ppm of S02 for 62% of the year. A maximum concentration of 0.75 ppm occurred in January. Leaves of alfalfa and buckwheat exposed to a con- centration of 0.40 ppm for 7 hours became spotted. Working with concentrations of 0.1-0.2 ppm of S02, the following ob- servations were made: there is more S02 resistance at or below 40 F, and SO2 sensitivity does not change with minor variations in soil moisture. The sulfate content of the nutrient supply did not affect sensitivity, although the growth rate of sulfur-defficient plants increased under fumigation with 0.1-0.2 ppm SO2. Plants recover between treatments if these are suffi- ciently spaced. Sensitivity was not affected by wetting the leaf surface. Young plants are more resistant than old plants; older leaves are more resistant than younger ones. HF gas tends to injure the margin of the leaf more frequently than SO2. Appli- cation of sodium fluoride to soil caused similar injuries to those induced by HF fumigation H2S gas is less toxic than the other gases tested, and injured the younger rather than the older leaves. Substituted phenoxy acids are extremely selec- tive, stimulating growth in some plants and injuring or deform- ing others. 21691 Heck, Walter H., Robert H. Daines, and Ibrahim J. Hindawi OTHER PHYTOTOXIC POLLUTANTS. In: Recognition of Air Pollution Injury to Vegetation: A Pictorial Atlas. Jay S. Jacobson and A. Clyde Hill (eds.), Pittsburgh, Pa., Air Pollu- tion Control Assoc., 1970, p. F1-F24. 54 refs. The effects of several phytotoxic pollutants are considered. Ethylene acts as a growth hormone; it causes a reduction in growth, stimulates lateral growth, and decreased apical dominance. Plant leaves may develop epinasty or show chloro- sis, necrosis, or abscission. Injury from oxidants other than ozone, PAN, or nitrogen dioxide may be chronic or acute. These oxidants, none of which have been identified, may cause necrosis, collapse of leaf tissue, and dehydrated and bleached lesions. Cotton leaves affected by herbicides show a yellow-green mottling or stippling and vein clearing may be pronounced. Tomatoes may show epinasty and twisting of plant parts. Arsenic trioxide injury on sensitive fruit and vegetable crops produces necrotic spots on the leaves, petioles, twigs, and fruits. Mild to severe interveinal necrosis and chlorosis may occur on broad-leaved plants as a result of atrazine. Necrosis, chlorosis, and epinasty are the common symptoms of chlorine injury. Acute tissue collapse and ------- H. EFFECTS-PLANTS AND LIVESTOCK necrotic spotting have resulted from ammonia injury. Discoloration of peach and apple fruits have also been re- ported. Hydrogen chloride caused an acid-type necrosis. Tip- burn to fir needles and necrosis along leaf margins have also been noted after HC1 exposures. Mercury causes chlorosis, ab- scission of older leaves, growth reduction, and general poor growth and development. The effects of particulates, hydrogen sulfide, and carbon monoxide are briefly discussed. 22952 Boussingault, M. PLANT PHYSIOLOGY- ON THE DELETERIOUS ACTION THAT THE VAPOR EMANATING FROM MERCURY EXER- CISES ON PLANTS. (Sur 1'action deletere que la vapeur ema- nant du mercure exerce sur les plantes). Compt. Rend., vol. 64:924-929, 1867. 2 refs. Translated from French. Belov and Associates, Denver, Colo., 9p., March 12, 1970. The effects of mercury vapor on plants were investigated. When a mercury-filled capsule was placed on each side of a petunia stem, the leaves turned black, withered, and were hanging. Another petunia, enclosed under a dish-cover where there was no mercury, retained all its vigor. Experiments were also conducted on mint plants. On the inner surface of one dish-cover sulfur was placed on the flower. In the other dish cover there was no sulfur. In less than 52 hours, the mint leaves in the dish containing only mercury had been complete- ly destroyed. The leaves of the plant in the dish also contain- ing sulfur were not affected. It was concluded that mercury vapor has a damaging effect on vegetation, and that the presence of sulfur counteracts this effect. 23436 Ruhling, Ake HEAVY METALS IN THE REGION OF VARGON-TROLL- HATTAN. H. ARSENIC AND MERCURY. (Tungematall- fororeningar inom Vargon- Trollhattanomradet. n. Arsenik, Kvicksilver). Text in Swedish. Lund Univ. (Sweden), Inst. of Ecological Botany, Kept. 15, 8p., May 1970. Arsenic and mercury were measured in a common moss, Hyp- num cupressiforme, in the region of Vargon-Trollhattan, Sweden. Three samples were taken from each of 127 sites, all more than 100 m from any road. The region studied is highly industrialized with iron, steel, and ferro-alloy industries. No exceptionally high values were observed. 23696 Crocker, William EFFECT OF CERTAIN LETHAL GASES UPON PLANTS AND ANIMALS. In: Growt of Plants, New York, Reinhold Publishing Corp., 1948, Chapt. 5, p. 172-203. 43 refs. The effects of various toxic gases on plants and animals are discussed. Ethylene is the constituent of artificial illuminating gas that injures plants in greenhouses when this gas seeps through the soil and into the houses. Hydrocyanic acid is the most deadly constitutent of artificial illuminating gas to plants growing outdoors near leaking gas pipes. Most natural gases have very low toxicity to plants because they contain no ethylene or other unsaturated hydrocarbons, and no HCN or other highly toxic gases. Some natural gases contain H2S which might injure plants if the gas were not thoroughly scrubbed. Mercuric chloride, calomel, or organic mercury fun- gicides mut be used with caution on soils in greenhouses or other enclosed spaces because the soils reduce these com- pounds to metallic mercury which has sufficient vapor pres- sure, especially at higher growing temperatures, to injure plants throughout the enclosed space. The most delicate plants are injured by 0.46 ppm of sulfur dioxide with seven hours' exposure. Animals endure 33 ppm for 500 hours without inju- ry. Sulfur dioxide kills the leaf parenchyma of the medium- aged leaves, thus cutting down assimilation, but there is no reduction of assimilation or growth if no tissue is killed, that is, there is no 'invisible injury.' Darkness and partial wilting increase the resistance of plants to SO2, partly at least by closing the stomates. Hydrogen sulfide differs from S02 in several ways as to its effect upon plants; it requires a much higher concentration to injure plants, 40 to 400 ppm; it kills the young leaves and stems rather than spotting middle-aged leaves, and its toxicity is not so greatly reduced by darkening and by wilting the plants. Chlorine acts much like S02 on plants and spots them in even lower concentrations Chlorinated water has relatively low toxicity for land plants when used either for syringing or watering them. By use of the continuous air-flow method, a study was made of a relative sensitiveness of plant and animal pathogens, sclerotia, seeds, green plants, and houseflies, rats and mice to the five gases, C12, HCN, H2S, NH3, and S02. Chlorine and S02 showed high toxicity to pathogens and other gases low toxicity. Sclerotia and seeds were little injured by any of the gases. Green leaves were very sensitive to these gases, and the gases showed the following descending order of toxicity: C12, SO2, NH3, HCN, and H2S. Green stems were more resistant than leaves, with no significant difference in the degree of toxicity of the five gases. Animals were readily killed by HCN and H2S and the descending order of toxicity for animals was HCN, H2S, C12, S02, and NH3. 24773 Richter, Oswald PLANT GROWTH AND LABORATORY ATMOSPHERE. (P- flanzenwachstum und laboratoriumsluft). Ber. Deut. Botan. Ges., vol. 21:180-194, 1903. 35 refs. Translated from German. Belov and Associates, Denver, Colo., 29p., June 10, 1970. A series of experiments designed to determine the effect of reduced oxygen or increased carbon monoxide on plant growth is described. The results of the experiments indicate that gase- ous impurities in the atmosphere may have significant effects on the rate of plant growth. Another series of experiments is conducted to determine the specific effects of coal gas, par- ticularly acetylene and ethylene, on the growth of certain vegetables. The results indicate that coal gas has an inhibiting effect on the growth in length and that it promotes the growth in thickness. A simple gas absorption system utilizing charcoal decreases the influence of coal gas. The shortening and thickening of affected plants is proportional to the amount of coal gas and to the duration of exposure. The effects of reduced oxygen partial pressure and plant respiration on plant growth include nutations of 130-270 deg. Mercury vapor can produce similar differences in growth as coal gas, however, it kills the plants within a short time. 25826 Berg, H. HYDROCHLORIC ACH). BROMINE. IODINE. HYDROGEN- CYANIDE. ETHYLENE. CARBONMONOXEDE. MERCAP- TANS. COAL GAS. ASPHALT- AND TAR-VAPORS. SATU- RATED HYDROCARBONS. ACETIC ACID. 2,4-DICHLORO- PHENOXY-ACETIC ACID. MERCURY. SELENIUM. SMOKE AND FOG. In: Phylotescische Immissionen. Berlin, Parey, 1963. p. 51-71. Translated from German. 35p. Occurrence of the contaminant, its macroscopic and micro- scopic damage to plant organs, its mode of action, and its ------- 42 MERCURY AND AIR POLLUTION diagnosis are summarized, along with differences in resistance among plants for the following: hydrochloric acid, bromine, iodine, hydrogen cyanide, ethylene, carbon monoxide, mercap- tans, coal gas, asphalt and tar vapors, saturated hydrocarbons, acetic acid, 2,4-dichloro-phenoxy-acetic acid, mercury, seleni- um, smoke and fog, and sulfuric acid. 25927 Hajduk, J. and M. Ruzicka THE STUDY OF DAMAGES CAUSED BY AIR POLLUTION TO LIVE PLANTS AND PLANT COMMUNITIES. (Das Stu- dium der Schaden an Wildpflanzen und Pflanzengesellschaften verursacht durch Luftverunreinigung). Air Pollution Proc. First European Congr. Influence Air Pollution Plants Animals, Wageningen, Netherlands, 1968, p. 183-192. Translated from German. Belov and Associates, Denver, Colo., 13p., Nov. 4, 1970. A review of the literature is provided concerning the influence of air pollution on wild plants and vegetation. Such studies are recommended in order to predict the influence of toxic emis- sions of new industries upon the landscape. Examination of in- dividual species is also essential to determine their resistance and whether or not they are indicators of pollution. Studies were made in the Institute for Landscape Biology in Bratislava of the effects magnesium oxide, sulfur dioxide, mercury, and other toxic materials have upon vegetation. The directions which research should take with regard to protecting the land- scape are indicated. 27872 Utagawa, Tatsuo EFFECTS OF ENVIRONMENTAL POLLUTIONS ON BIRDS AND ANIMALS. (Kogai ni yoru choju no eikyo). Text in Japanese. Kogai to Taisaku (J. Pollution Control), (l):35-39, Jan. 1971. The lives of wild birds and beasts are being threatened because of the destruction of their habitats, as development of those areas progress, and because of pollution from chemical matter, especially from insecticides and herbicides. It is possi- ble that such birds as the albatross, and others, may be accu- mulating radioactivity. Even in a vast area of the USSR, many wild birds and beasts are dying because of dichloro-diphenyl- trichloro-ethane (DDT). There are only two storks in Japan, since they started to lay eggs which did not hatch because of mercury poisoning. Benzene hexachloride (BHC) and DDT have the same effect on eggs of birds. In the natural habitat of herons near Tokyo one can now see only 2000 herons, although at one time there were 50,000. While the adult herons have to fly increasingly further distances to seek food, the chicks are suffering from swollen knee joints, due to accumu- lation of chlorine or organic phosphorous chemicals. Swallows are dying, also, because they eat insects on which insecticides were sprayed. The same fate has overtaken crows and kites, as well as herons. Even though DDT and BHC are now forbid- den, other chemicals, used for agricultural purposes are poisoning birds. Water foul are being affected by waste oil and detergents. Foxes, weasels, and martens, the natural enemies of wild rabbits, died because they ate rats which were poisoned with rat poison. People engaged in the forestry indus- try are careful of using chemicals which might cause this sort of secondary damage, but the people in agriculture still use these kinds of chemicals. In Japan, BHC and DDT are con- trolled, but are entirely forbidden, as in the case of the U. S. Monkeys are being starved because of herbicides. There have been cases of cattle and horses which died because of herbi- cides. Deer and antelopes are also being threatened. The citizens of Ichikawa City succeeded in getting the Chiba Pre- fectural Government to spend approximately 2,800,000 to make an artificial island to offer a haven for migratory birds. The wild life in the forests of Mt. Fuji is being rapidly destroyed because of a newly constructed road which takes the sightseers to the middle slope of the mountain. It is emphasized that private citizens can cooperate by planting even one tree in their gardens. 28849 Zimmerman, P. W. and William Crocker PLANT INJURY CAUSED BY VAPORS OF MERCURY AND COMPOUNDS OF MERCURY. Contrib. Boyce Thompson Inst., 6(1):167-187, Jan.-March 1934. 6 refs. Experiments were performed to determine the effect of vapors of mercury and its compounds on growing plants when ex- posed under various conditions. Treating one bed of soil in a rose house with bichloride of mercury injured flowers of Briarcliff variety over the entire range, showing that the plants were attacked by some inpurity in the air. Flower buds of roses in all stages of development were affected by the vapors emanating from soil treated with bichloride. Peduncles of very young buds turned yellowish and then black; half mature buds turned brown, and the corollas abscissed from the receptable without opening; the older buds continued to unfold but the petals lacked the pink color characteristic of Briarcliff variety and brown patches finally developed; stamens also were in- jured, turning nearly black in half mature buds. Leaves of rose plants confined in glass cases with treated soil were injured as well as flower buds. Plants of 65 different genera were found susceptible to injury from vapors emanating from soil or tank- age moistened with bichloride solution. Ten types were found to be comparatively resistant. The injury to plants from vapors from metallic mercury was similar to that caused by vapors emanating from soil treated with bichloride. Thirteen other compounds of mercury affected plants as reported for bichloride; of these six were organic, and seven inorganic. The extent of the injury and the rate at which metallic mercury in- jured plants varied with the concentration of th vapor in the air and this in turn varied with the temperature. Vapors from soil treated with mercury compounds injured plants more quickly at high than low temperature. In general, the amount of injury at a given temperature could be correlated with mer- cury vapor pressure at the same temperature. Metallic mercury vapor was detected in the air surrounding soil treated with the mercury compounds, indicating reduction to the metallic state. Mercury was recovered from leaves of plants confined in glass cases where a small amount of soil had been moistened with a solution of bichloride. (Author summary) 29147 Byme, A. R. and L. Kosta STUDDZS ON THE DISTRD3UTTON AND UPTAKE OF MER- CURY IN THE AREA OF THE MERCURY MINE AT n>RIJA, SLOVENIA (YUGOSLAVIA). Vestn. Sloven. Kern. Drustva, 17(l/4):5-ll, 1970. 5 refs. Results are presented of a preliminary investigation of the mercury content of environmental samples, primarily of vari- ous water, soil, and plant samples, in the neighborhood of the mercury mine at Idrija, Yugoslavia. The measurement technique was activation analysis using a volatilization method for mercury separation. Results show a wide range from ap- parently normal background (0.005-0.1 ppm) to very high levels (10-100 ppm). The highest values are mainly due to aerial con- tamination from the mine flue gases. More importantly, the results show the ability of vegetation to accumulate mercury during growth. (Author abstract) ------- H. EFFECTS-PLANTS AND LIVESTOCK 43 33046 Byrne, A. R., M. Dermelj, and L. Kosta A NEUTRON ACTIVATION STUDY OF ENVIRONMENTAL CONTAMINATION AND DISTRIBUTION OF MERCURY IN ANIMALS AND FISH. International Atomi Energy Agency, Vienna (Austria), Nucl. Tech. Environ. Pollut., Proc. Symp., Salzburg (Austria), 1970, p. 415-427. 11 refs. (Oct. 26-30, Paper IAEA-SM-142a/24.) A program was undertaken to determine the uptake and dis- tribution of mercury in the biosphere around the mercury mine and distillation plant at Idrija, Yugoslavia, in order to establish tolerance levels and the possibility of the adaptation of living organisms to its increased concentration. Two sampling sites were chosen, one near the main discharge point for the flue gases of the distillation plant, and the second in an area where ore deposits occur on or near the surface. The initial samples consisted of excreta, as well as of the fur and feathers of rab- bits, hens, and cows. Eggs and milk were also analyzed at dif- ferent periods of the year. In another set of experiments, rab- bits were taken to an uncontaminated area and the mercury content of the blood and excreta were tested for 50 days. Trout were also taken from the river above, and at two sites below, where residue deposits from the mercury mine come into contact with the river water. Neutron activation analysis was used to determine the mercury content of samples. Kid- ney, liver, brain, and heart, samples were also tested. (Author abstract modified) 348810 Johnels, A. G. and T. Westermark MERCURY CONTAMINATION OF THE ENVIRONMENT IN SWEDEN. In: Chemical Fallout. Morton W. Miller and George G. Berg (eds.), Springfield, LI., Charles C. Thomas, 1969, Chapt. 10, p. 221-239. 21 refs. Mercury and mercury compounds have a wide use in agricul- ture and industry, and an increase in natural levels of mercury content has been recorded. The mercury content in feathers of 11 terrestrial bird species, particularly goshawks, was studied by activation analysis, in material derived from museum col- lections and living or freshly killed birds and covering a period of more than 100 years. Nearly constant mercury levels were found from the middle of the 19th century until 1940. After that, an increase in mercury concentration occurs, amounting to at least 10 to 20 times the previous level. In 1940 alkylmer- cury compounds began to be used as seed dressings, indicating that this is the main source of terrestrial contamination. Ac- tivation analysis of the mercury content in axial musculature of the pike was used to estimate the level of mercury in the aquatic environment The mercury concentration factor in pike is 3000 or more. There are indications that mercury appears as an airborne pollutant, mainly affecting the aquatic environ- ment. A number of sources of mercury contamination includ- ing fuel burning, fertilizing, and industrial processes, are discussed; in many areas human activities have raised the mer- cury level of the environment far above natural levels. (Author abstract modified) ------- 44 K. STANDARDS AND CRITERIA 05940 V. A. Ryazanov NEW DATA ON LIMITS OF ALLOWABLE ATMOSPHERIC AIR POLLUTANTS. (In: Limits of allowable concentrations of atmospheric pollutants. Book 6.) U.S.S.R. Literature on Air Pollution and Related Occupational Diseases, Vol. 9. pp. 1-8. (1962). Russ. (Tr.) This volume contains material discussed by the Committee on Sanitary Air Protection during its 1959 and 1960 sessions. The material contained in this volume is of heterogenous character in its methodological presentations and completeness and finality of the reports. The Committee took the position that the level of methodology reached during the last period of in- vestigation and the degree of reliability of results obtained did not represent the acme of perfection, and therefore, the proposed limits of allowable concentrations should be regarded as mere points of orientation for future studies, leading to more basic, more scientific and hence, more reliable limits of atmospheric air pollutants. In this connection it is the aim and purpose of this Committee to act as the stimulator, guide and directing agent leading into investigational channels based on the outlined principles. Air pollutants studied include formal- dehyde, HC1 aerosol, CS2 vapor, Mn, Hg, combined C12 and HC1 gas, acetone, CO and Dinyl (mixture of diphenyl and diphenyl oxide). 06677 E. V. Khukrin MODERN APPROACH TO AIR DUSTEVESS IN WORKSHOPS. U.S.S.R. Literature on Air Pollution and Re- lated Occupational Diseases, Vol. 7, 301-8, 1962. (Gigiena i Sanit.,) 24 (7) 50-5, 1959. Translated from Russian. CFSTI: 62- 11103 Extensive data were accumulated during recent years on the study of the effect of different types of industrial aerosols. Based on the summary and evaluation of new data obtained from work institutes, university apartments and practicing physicians a list was prepared of the maximum permissible concentration of 55 dusts and aerosols. This list is presented and improvements in those standards are recommended. 07576 Shakhbazyan, G. Kh. and I. M. Trakhtenberg HYGIENIC STANDARDS AND SAFETY CRITERIA FOR EN- VIRONMENTAL FACTORS IN INDUSTRY. (0 gi- gienicheskom normirovanii i kriteriyakh bezurednosti faktorov proizvodstvennoi sredy.) Text in Russian. Gigiena i Sanit., 30(9), Sept. 1965. 15 refs. Engl. transl. by Israel Program for Scientific Translations, Hyg. Sanit., 30(9):328-336, Sept. 1965. CFSTI: TT66-51033/3 The principles governing the determination of hygienic stan- dards for the factors of industrial environment are discussed. The necessity of differential substantiation of hygienic stan- dards for various factors closely related to the everyday life of man and for factors whose action is undesirable and harmful in the environment of man is also discussed. On the basis of the work done at the Occupational Hygiene Department of the Kiev Medical Institute certain data are presented on the criteria that may evaluate the harm and safety of the in- vestigated effects. Interpretation of the experimental findings on the effect of toxic substances of the immunobiological reactivity, the protein metabolism and the cardiac functioning is given. The relationship of specific and nonspecific reactions of the body in reply to the action of toxic substances is analyzed. 21133 Kurnosov, V. N. BASIC DATA FOR THE HYGIENIC DETERMINATION OF LIMITS OF ALLOWABLE MERCURY VAPOR CONCEN- TRATION IN ATOMSPHERIC AIR. In: Limits of Allowable Concentrations of Atmospheric Pollutants. V. A. Ryazanov (ed.), Book 5, Washington, D. C., U. S. Public Health Service, March 1962, p. 39-51. 22 refs. (Translated by B. S. Levine.) Experiments on the effects of mercury inhalation by rats are described, and previous investigations of mercury toxicity are reviewed. Also included is a summary of symptoms of mercu- ry poisoning on humans under industrial conditions. The major sources of atmospheric mercury vapor emissions are plants producing mercury and plants which use it as a raw or supple- mental material, such as chemical and pharmaceutical indus- tries and factories producing light bulbs. It is also used in large quantities in the substations of certain electric transportation systems. Experimental exposure of animals to 2-5 micro- grams/cu m of mercury vapor, a level frequently occurring in the atmospheric air around industrial enterprises, produced such changes in the higher nervous activity as functional disturbances in the brain cortex and diffuse protective inhibi- tion. Concentrations of 0.3 micrograms/cu m elicited no changes; therefore the present 0.3 allowable limit of mercury concentration in atmospheric air is considered valid until more thorough studies prove otherwise. It was found that 10 micro- grams/cu m of mercury in the air of working premises can cause chronic poisoning and that 8-10 and 2-5 micrograms/cu m used experimentally elicited notable functional changes in the higher centers of the nervous system. Therefore, it is recommended that the present occupational MAC of 10 micro- grams/cu m be reduced. (Author conclusions modified) 28466 Lebedev, Yu. D., M. K. Nedogjbchenko, and L. F. Glebova CERTAIN RESULTS AND IMMEDIATE PROBLEMS OF HY- GIENE SCIENCE AND SANITARY PRACTICE IN THE AREA OF PROTECTING CITY AHt. (Nekotoryy itogi i bliz- hayshiye zadachi gigiyenicheskoy nayki i sanitamoy praktiki v oblasti okhrany atmosfemogo vozdukha gorodov). Text in Russian. Gigiena i Sanit., 21(ll):3-8,1956. Maximum allowable concentrations have been established for a number of air pollutants as follows (single and daily-average values, respectively, mg/cu m): sulfur dioxide, 0.50, 0.15; chlorine, 0.10, 0.03; hydrogen sulfide, 0.03, 0.01; carbon disul- fide, 0.50, 0.15; carbon monoxide, 6.0, 2.0; nitrogen oxides, ------- K. STANDARDS AND CRITERIA 45 0.50, 0.15; non-toxic dust, 0.50, 0.15; soot, 0.15, 0.05; phosphorus pentoxide, 0.15, 0.05; manganese and manganese compounds, 0.03, 0.01; fluorine compounds, 0.03, 0.01; sul- furic acid, 0.30, 0.10; phenol, 0.30, 0.10; arsenic (inorganic compounds other than arsine), 0.003; lead and lead compounds (other than tetraethyl lead), --, 0.0007; and metallic mercury, - , 0.0003. Major administrative and technical problems as- sociated with air pollution control in 1956 are reviewed. 34100 Love, G. J. AIR POLLUTION INFORMATION PERTINENT TO THE CARIBBEAN. Preprint, Environmental Protection Agency, Research Triangle Park, N. C. and American Inst. of Chemical Engineers, New York, 29p., 1971. (Presented at the Technical Environmental Conference, 1st, San Juan, Puerto Rico, 1971.) National primary and secondary ambient air quality standards are given for sulfur dioxide, participates, carbon monoxide, photochemical oxidants, hydrocarbons, and nitrogen dioxide. The primary standards define air quality levels judged necessa- ry, with an adequate margin of safety, to protect public health. The secondary standards define levels necessary to protect public welfare from any known or anticipated adverse effects of a pollutant. Also included are initial lists, issued by the En- vironmental Protection Agency, of hazardous substances for which no ambient air quality standard is applicable and of five categories of stationary sources that contribute significantly to atmospheric pollution. Emission standards are to be promul- gated for the hazardous substances (asbestos, beryllium, mer- cury) and for the stationary sources (contact sulfuric acid plants, large fossil fuel-fired steam generators, nitric acid plants, Portland cement plants, and incinerators of more than 2000 Ib/hr charging rate. By regulating population growth, in- dustrial development, and number of automobiles, the Carib- bean could control pollution problems before they get out of hand. 34664 Environmental Protection Agency, Research Triangle Park, N. C., Office of Air Programs BACKGROUND INFORMATION - PROPOSED NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLU- TANTS: ASBESTOS, BERYLLIUM, MERCURY. Pub APTD-0753, 28p., Dec. 1971. 20 refs. NTIS: PB 204876 Background information on the derivation of proposed na- tional emission standards for asbestos, beryllium, and mercury is examined with respect to effects of the pollutants on health, nature of the air pollution problem, and the development and economic impact of the proposed standards. Standards for asbestos emissions are expressed in terms of required control practices that limit emissions to an acceptable level. The proposed beryllium standards are designed to protect the public from 30-day average atmospheric concentrations greater than 0.01 microgram/cu m. For short-term periodic exposures, the safe level was determined at 25 microgram/cu m for a 30- minute maximum. Proposed emission standards for mercury should not exceed an average daily concentration of 1.0 micro- gram/cu m. Atmospheric dispersion estimates used to develop the proposed standards are outlined. These were based on parameters of average wind speed, stability, and wind direction. ------- 46 L. LEGAL AND ADMINISTRATIVE 12423 Lutz, G. A., S. B. Gross, J. B. Boatman, P. J. Moore, R. L. Darby, W. H. Veazie, and F. A. Butrico DESIGN OF AN OVERVIEW SYSTEM FOR EVALUATING THE PUBLIC-HEALTH HAZARDS OF CHEMICALS IN THE ENVIRONMENT. VOLUME H. THE OVERVIEW SYSTEM. (FINAL REPORT). BatteUe Memorial Inst, Columbus, Ohio Columbus Labs., Contract PH-86-66-165, 87p., July 18, 1967. 8 refs. An overview system was designed that would assist in main- taining a continuous surveillance of chemical contaminants in the environment. To assess properly the difficulties and problems that would confront a surveillance program, as well as provide data on the operation of such a system, five specific chemicals or groups of industry were selected. These included mercury, nickel, vanadium, fluorocarbons, and the chemicals involved in the pulp and paper industry. Information needs were found to fall into five categories: chemical produc- tion, secondary product formulation, pattern of chemical usage, chemical toxicology and pharmacology, and environ- mental health hazards. Four separate features were recognized as essential to an overview center: a good scientific library and information-handling capabilities, ready and convenient access to large pools of scientific competence, an organiza- tional solution for integration of information, and strong managerial ability. The total program for a comprehensive overview of chemical threats to environmental health was judged to require 187 professional man-months of effort plus consultant assistance. It was recommended that an overview center be established within an existing institutional structure possessing the qualifications necessary to provide both infor- mation-analysis specialties and a significant multidisciplinary block of professional scientists to immediately provide an in- ternal core for the center. The necessary components of the center itself were identified. The requirements, costs, and recommended methods of operation of the total overview pro- grams were discussed. (Author summary modified) 23116 Hashimoto, Michio THE PRESENT STATE OF POLLUTION IN JAPAN. (Wagakuni ni okeru kogai no genjo). Text in Japanese. Ku- kichowa to Reito (Air Conditioning Refrig.), 10(2): 1-5, Jan. 15, 1970. Pollutions in Japan are reviewed from the social viewpoint as well as in relation to the situations before and after the passing of the Basic Public Nuisance Control Law and the existing state of contamination and the new understanding of health. The change of energy source from coal to petroleum since 1955 produced new types of industrial pollution, and the high rate of economic growth also produced the urban pollutions. Contamination of Yokkaichi was the start of the present pollu- tion problems, and it was followed by the investigations and the passing of several control laws. Enforcemen regulations were completed and the emission limitations were strengthened. Local governments also established regulations. The establishment of the environmental standards was enabled by the Basic Law, and later the standard for sulfur oxides was passed. General noise and carbon monoxide pollutions are now being discusse as to their environmental standards, and stan- dards for special type of noise, fine particles, hydrocarbons, oxidants, nitrogen oxides and exceptionally harmful sub- stances are expected to be established The Public Nuisance Control Plans are also under way together with the provisions for relief measures for pollution victims. Results of investiga- tion of air pollution in 1968 are presented. Water pollution is also described in terms of methyl mercury and cadmium dis- eases. 23608 Public Nuisance Control Committee (Japan) BASIC POLICY REGARDING THE ESTABLISHMENT OF PUBLIC NUISANCE CONTROL PROGRAM FOR THE OSAKA AREA. (Osaka chiiki ni kakawaru kogaiboshikeikaku sakutei no kihon hoshin. An). Text in Japanese. Yosui to Haisui (J. Water Waste), 12(9):759-767, Sept. 1, 1970. A control program is presented which is to be effective throughout Osaka Prefecture which has long been developing as a large industrial area; the enormous economic activity has added much to the pollution problem. Air pollution is severe in the central and Hanshin coastal industrial district, and water pollution is significant in Yodo, Kanzaki, Neya and Yamato Rivers. Water quality in Osaka Bay has deteriorated to the ex- tent of ruining the fishing industry. The ground settling problem in East-Osaka, and the noise from Osaka Interna- tional Airport have invited many complaints. The pollution levels are to be lowered to within the tabulated limits by 1980. There are many necessary control measures, but the following are especially emphasized in view of the national planning pri- orities. They are the control measures against stationary air pollution sources, purification of coastal waters and rivers and streams, control of nuisances accompanying automobile traf- fic, treatment measures for metropolitan and industrial wastes, and the control of airport noises. In addition, surveillance and measurement systems as well as cooperation with th neighbor- ing prefectures are indispensible. Detailed tables are given on the target maximum allowable concentrations of sulfur oxides, suspended particulates, and carbon monoxide in air as well as for cyanides, alkyl mercury, organic phosphorous, cadmium, lead, chromium, arsenic, and mercury in general for water pol- lution. Values for pH, BOD, SS, DO and coliform bacteria counts are also given. The maximum allowable noise levels for daytime, morning and evening are also listed. 23610 Public Nuisance Control Committee (Japan) BASIC POLICY REGARDING THE ESTABLISHMENT OF A PUBLIC NUISANCE CONTROL PROGRAM FOR THE TOKYO AREA. (Tokyochiiki ni kakawaru kogaiboshikeikaku sakutei no kihonhoshin. An). Text in Japanese. Yosui to Haisui (J. Water Waste), 12(9):750-758, Sept 1, 1970. A control program to be effective throughout the Tokyo metropolitan area other than islands in the Pacific Ocean ------- L. LEGAL AND ADMINISTRATIVE 47 under the jurisdiction of the metropolitan government is presented. The area is a megalopolis with 11.5 million people, and the industrial and economic activities are increasingly ex- acerbating the pollution problem. Air pollution from automo- biles and factories is severe. It originates from the central and Joto areas as well as from factories along the Arakawa River and Sumida River. Water pollutip in Sumida, Naka, and Tama Rivers is also intense. The pollution levels are to be lowered to within the tabulated limits by 1980. The necessary control measures are numerous, but the following are especially emphasized in view of the national planning priorities. They are the control measures against stationary air pollution sources, purification of sea water in the coastal areas and fresh water in rivers and streams, control of nuisances accom- panying automobile traffic, control of ground settling (in some areas as deep as four meters), and treatment measures for metropolitan and industrial wastes. In addition, the establish- ment of nuisance monitoring and measurement system is necessary, and close cooperation with the neighboring prefec- tures is indispensable. Detailed tables are given on the target maximum allowable concentrations of sulfur oxides, suspended participates, and carbon monoxide in air as well as cyanides, alkyl mercury, organic phosphorus, cadmium, lead, chromium, arsenic, mercury in general and pH, BOD, SS, DO, and conform bacteria values for water pollution. The max- imum allowable noise levels for daytime, morning and nighttime are also listed. 24214 Public Nuisance Control Committee (Japan) BASIC POLICY REGARDING THE ESTABLISHMENT OF PUBLIC NUISANCE CONTROL PROGRAM FOR THE KANAGAWA AREA. (Kanagawa chiiki ni kakawaru koga boshikeikaku sakutei no kihon hoshin. An). Text in Japanese. Yosui to Haisui (J. Water Waste), 12(9):768-776, Sept. 1, 1970. A control program to be effective in the area East of Sagami River within Kanagawa Prefecture is presented. This area serves as the mainstay of the Japanese economy, industries such as electric power, steel, petroleum, chemicals and heavy automobile traffic have contributed to the chronic pollution problems. Air pollution in the Taishi and Tajima areas and water pollution in Tama, Tsurumi, and Katabira Rivers as well as Tokyo Bay are extremely severe. The pollutant levels are to be lowered to within the tabulated limits by 1980. There are many necessary control measures, but the following are espe- cially emphasized in view of the national planning priorities. They are the control measures against stationary air pollution sources in Kawasaki, especially purification of coastal waters and rivers and streams, control of nuisances accompanying au- tomobile traffic, and treatment measures for metropolitan and industrial wastes. In addition, surveillance and measurement systems as well as cooperation with the neighboring prefec- tures are indispensable. Detailed tables are given on the target maximum allowable concentrations of sulfur oxides, suspended participates, and carbon monoxide in air as well as cyanides, alkyl mercury, organic phosphorus, cadmium, lead, chromium, arsenic, mercury in general, and pH, BOD, SS, DO and colifonn bacteria values for water pollution. The max- imum allowable noise levels for daytime, morning and evening are also listed. 25288 Middleton, John T. AIR POLLUTION CONTROL: SOME LESSONS LEARNED IN THE UNITED STATES. Preprint, National Academy of Medicine, Mexico City (Mexico), 13p., 1970. (Presented at the Conference on Air Pollution, Mexico City, Feb. 18,1970.) In the United States the fundamental philosophy that has evolved in the development of air pollution control programs is that air pollution control begins at the source. One of the approaches that has been developed to carry out this philosophy is the permit system, which requires that anyone who wishes to construct or operate a machine, equipment or other contrivance which may pollute the air obtain the prior permission of a government agency. Standards have been set limiting the emissions from automobiles. The kind and degree of control of stationary sources will vary from area to area de- pending upon such diverse parameters as climate and weather, degree of industrialization, population density, and topog- raphy. It is here that the technique of diffusion modeling plays an important role. Losses to agriculture alone were recently estimated to exceed $325 million annually in the United States, while studies show that an exposure to 12 mg/cu m (10 ppm) carbon monoxide for approximately eight hours may increase the blood carboxyhemoglobin level to produce some decre- ment in mental performance. A British study found an associa- tion between air pollution and deaths from bronchitis and lung cancer in an area where the yearly average sulfur dioxide level was 116 micrograms/cu m (0.04 ppm). Another study found an association between participate matter and prostatic cancer, while eye irritation has been demonstrated when oxidant levels increase above 100 micrograms/cu m. Hydrocarbons, nitrogen oxides, lead and mercury compounds are also mentioned. Government responsibility on federal state, and local levels is also discussed. 29230 Japan Public Health Assoc. STUDIES ON THE RANGE OF DISEASES DUE TO EFFECTS OF POLLUTIONS. (Kogai no eikyo ni yoru shippei no hani to ni kansuru kenkyu). Text in Japanese. 42p., March 1970. 18 refs. In 1969, the ministry of health and welfare established a com- mittee to examine the designation of diseases due to pollution. Committee members were divided into groups to tackle dis- eases peculiar to particular regions. A subcommittee was or- ganized on Minamata Disease, since it was prevalent at two different localities in two different periods. The second general meeting was held in December 1969, establish a law concern- ing special measures to relieve the health damages due to pol- lution. Discussion was held based on the reports from various groups and a report was made incorporating necessary or- dinances and public notices in accordance with the law. The committee members believed that bronchial asthma, chronic bronchitis, asthmatic bronchitis and emphysema should be designated, although they are non-specific diseases, as dif- ferent from specific diseases like Minamata Disease and Itai- itai disease, which are brought about by polluted water. Overall judgment would have to be made based on the history of residence and disease, since it is difficult to clinically distin- guish diseases due to air pollution and those which are not. Other diseases may occur after the primary disease. The diag- nosis of chronic asthma should be in accordance with the definition of the American Thoracic Society, and emphysema should agree with the Emphysema Study Association Diagno- sis standards. The minimum items to be checked are: lung capacity one second volume, trachea! resistance, residual volume (if necessary), chest x-ray, heart function (if necessa- ry), blood pressure, electrocardiogram, blood test (red and white corpuscles and hemoglobin), phlegm (shape, volume, and microbes), skin reactio to allergy, and house dust The re- port also contains a section on organic mercury and cadmium. It is recommended that further studies of the effects of pollu- tion be made and that notes be compared by those concerned in different areas. Extracts of the laws related to pollution ------- 48 M. SOCIAL ASPECTS 23145 Hashimoto, Michio A NEW POLITICAL APPROACH TO CONTROL PUBLIC NUISANCE. (Kogai gyosei no tachiba kara). Text in Japanese. Toho Igakkaishi (J. Med. Soc. Toho, Japan), 16(6):608-614, Dec. 1969. The general discussion of public nuisance control is geared towards the implications of control laws and governmental in- volvement and responsibilities. The legal control of pollution problems must be performed systematically, since it concerns many ministries and agencies. Detailed explanations concern- ing how the sulfur dioxides environmental standard was established are given. The threshold value is explained as is the academic definition of 'purity', and the environmental standard is designed toward the administrative aim of main- taining the threshold at a feasible level. The standard was declared to be impossible by the industrial and the business sector of the economy, but the ten-year plan attached to the standard was patterned after the plan of the Ministry of Inter- national Trade and Industry. Studying the relationship between pollution and public nuisance was difficult, and the opposition of the industries was based on the absence of firm evidences. This is the crux of future pollution control. In view of the present and past examples, the possibility of administration without complete scientific investigation is the key to pollution control. The difficulty of investigating public nuisance problems such as the methyl mercury poisoning in Minamata as well as the problems encountered in the course of the in- teraction of administrative-political and academic-medical deci- sion-making are explained. ------- AUTHOR INDEX 49 ABERNETHY, R F *A-06351 ADAMO M *G-34682 ADAMSON, D L «C-06045 AGUILLARDO D F-13197 AIDAROV, T K C-07567 ALTERMAN, N A 'G-08387 ALTMAN, P L 'F-09764 ANBAR M «G-13446 ARMSTRONG D W B-28918, 'G-28013 ARUIN, A S *C-08134 ASO K G-30308 ASPERGER S *C-33277 AUGHEY H 'C-25431 8 BARNES E C *C-34815 BARRINGER, A R 'C-05191 BARRY G D-31112 BATTIGELLI M C *G-33504 BEDERKA J P JR *G-31705 BELILES, R P *G-08092 BELLUSCIO, P R G-08092 BERG H 'H-25826 BERLIN M «G-18036 BERLIN, M H 'G-12653 BERMAN E *C-33338 BITTERSOHL G *G-34621 BOATMAN J B A-12422, L-12423 BOLKER H I 'A-3I548 BOUSSINGAULT M *H-22952 BRAR S S 'D-20790 BREWER, L W «C-09333 BRINK J A JR C-23771 BROWETT, E V 'C-05977 BROWN, J R 'G-08746 BRUNE D "C-11626, 'G-31624 BRUSKIN, Z Z 'D-06671 BUTRICO F A A-12422, L-12423 BYRNE A R *H-29147, »H-33046 CHATIGNY M A "C-26275 CHAUDET, J H C-09751 CHOLAK, J 'D-04986 CHRISTIAN C M II *C-34432 CHRISTIE, A A «C-07772 CLARK, R S G-08092 CLARKSON, T 'G-06172 CLARKSON, T W 'G-11556 COPPLESTONE, J F 'G-07319 CORN M D-31112 CRAIG J C C-26275 CROCKER W *H-23696, H-28849 CROSS C E G-3I224 CUCUEL F A-34754 GULP D A C-29652 DABROWSKI, Z G-09397 DAINES R H H-2169I DALLAVALLE J M B-28918 DARBY R L A-12422, L-12423 DAVIS W H 'G-27801 DE SCHMERTZING, H *C-09751 DELAUGHTER B *C-27389 DERMELJ M H-33046 DIEMAN »H-19770 DITTMER, D S F-09764 DUBROVSKAYA D P A-14286 DUFF, G M C-09369 DUNSDON, A J C-07772 EDA S 'A-29787 EDINGER J G C-26275 EDWARDS T I B-28918 EJIRIS A-29787 ELKINS, H B «G-06680 EPSTEIN S S 'G-26740 ESHLEMAN A *A-33641 EYBL V «G-31629 FAIRHALL L T 'G-32608 FAZACKERLEY J G-18036 FICKLIN W H A-27081 FTTE L E C-33042 FLEWELLING F J 'B-30117 FLINN R H B-28918 FORESTER G C-26275 FUJINAGA T 'C-32534 FUJINO T G-30308 FUJIWARA T 'C-32718 FUKUDA K *G-32546 FUKUI S *C-28126, *C-32476 FULKERSON W A-34827 GAYNULLINA E T "C-34939 GIBSON, F H A-06351 GILL J E C-26275 GIMADEEV, M M 'G-09524 GIRINA V V C-28450 GLEBOVA L F K-28466 GLUSKOTER H J A-30457 GOEIJ J J M D *A-30292 GOLDBERG E D A-34424 GOLDMAN F H B-28918, *G-28030 GOLDWATER L J *G-32936 GOULDING R 'G-31543 GRANT N *A-29643 GRAY A S B-28918 GROSS S B A-12422, L-12423 GUSTAFSON P F D-20790 H HABCZYNSKA, D G-07234 HAGINO N G-30308 HAENES G F JR C-28214 HAJDUK J *H-25927 HALLEE T J 'G-18128 HASHIMOTO M *L-23116, 'M-23145 HATTORI D M D-20790 HECK W W 'H-21691 HEIMANN, H 'G-07423 HEM EON W C L 'C-28214 HENDERSON R C-29652 HENDRICKS R H H-17710 HIKICHI H A-29787 HINDAWI I J H-21691 HIRAYAMA T C-29770 HOUGH J W B-28918 HOUTMAN J P W A-30292 HWANG J Y C-31862 I IUIMA N G-19190 IKI S 'D-27188 INBAR M G-13446 ISHIBASHI U G-30308 ITO H A-29787 JACOBS M B C-28583 JENNE E A »E-26697 JOENSUU 0 I 'A-30017 JOHNELS A G "H-34881 JONES J D "C-31171 JORDI A *G-27085 JUNG F 'G-32218 K KAISER G 'C-28354 KANABROCKI E L D-20790 KANBARA S 'B-29450 KANEBO M *C-19506 KANGAS B-29328 KANGAS J 'B-32461 KANNO S 'C-30635 KARIMOVA L K 'G-29255 KAZANTZIS, G "G-06176 KEENAN, R G »G-08079 KENNEDY E J A-30457 KHRUSTALEVA, V A *C-07284 KHUKHRIN, E V 'K-06677 KIDA F G-30308 KING E *D-29545 KIRYAKOV, K 'G-05185 KLEINFELD M 'F-13197 KLINE J R D-20790 KOIDE M A-34424 KORSHUN, M N »A-08489 KOSMIDER, S »F-11570, *G-07234, »G-09396, "G-09397 KOSTA L H-29147, H-33046 KOYAMA M C-32534 KRAUSE L A *C-29652 KRIVAN V 'C-28338 KRUGER P F-32072 KRUPITSKAYA, I D 'B-06884 KUDSK F N 'G-06239, 'G-18247 KUDSK, F N 'G-13035 ------- 50 MERCURY AND AIR POLLUTION KULKARNI, M V G-08746 KUPEL R E C-34808 KURNOSOV V N "K-21133 KURNOSOV, V M 'G-05945 KURODA D 'C-29480 KUYKENDALL W E C-33042 NURMUKHAMETOV R N C-34939 NYHOLM E B-29328, B-32461 o OHTA, Y 'G-05470 OKASHITA H C-32718 OZOLINS G A-23561 STALZER, R F C-09587 STEIN E F-13197 STEPANOV A S B-3I390 STEPHENS E R C-26275 STEPHENS, J D C-06045 STITT F *C-33886 STOCK A *A-34754, 'G-29276 SYKORA J G-31629 LAKTIONOVA T YE C-28450 LARSSON L 'C-30199 LEACH S J *F-13348 LEACH, L J G-08092 LEARNED R E A-27081 LEBEDEV YU D *K-28466 LEE, D *B-06837 LEFFERTS, D T C-09587 LIDEN K C-11626 LINCH, A L "C-09587 LINDBERG W 'G-13625 LOB, M 'G-07337 LOVE G J *K-34100 LUCHINA, K I A-06909 LUTZ C A *A-12422 LUTZ G A *L-12423 LYON W S A-34827 M MACLEOD W D C-26275 MALENFANT A L "C-31862 MANINGER R C C-26275 MARK H B C-31171 MARSHALL, B S C-07772 MASTROMATTEO, E 'G-05737 MATSAK, V G 'F-06648 MATSUMOTO M D-27188 MATSUZAKIJ C-19506 MATTSSON S C-11626 MAYZ E *D-31112 MCARTHUR, D A G-07319 MCCARTHY J H JR *A-27081 MCGEE L C *G-27317 MELEKHINA V P *A-17624 MERTYL V G-31629 MESMAN B B *G-27387 MEUSCHKE J L A-27081 MIDDLETON J T "L-25288 MIRARCHI, A 0 G-11241 MOFFITT A E JR *C-34808 MOLOKHIA, M M 'G-08328 MOORE P J A-12422, L-12423 MOORE, C E D-20790 MORGAN G B 'A-23561 MURATI I C-33277 MUSTAFA M G 'G-31224 N NAGAYAMA S A-29787 NAITO S C-19506 NEAL P A *B-28918, *G-34756 NEDOGIBCHENKO M K K-28466 NELSON D M D-20790 NELSON G 0 *F-14712 NEVILLE G A 'G-21113 NISHIMURA K *C-29770 NISHIMURA T D-27188 NISHIYAMA K A-29787 NORDBERG G G-18036 NORDBERG, G *G-09406 NORDBERG, G F G-12653 PAKTER M K *A-14286 PARAMESHVARA, V 'G-07330 PATRIARCHE G J C-31171 PATTON W F 'C-23771 PAULSEN K E C-31171 PERSHIN A V A-14286 PETROVA, N I »B-06883 PISAREVSKII, I L B-06884 POKROVENKO, Z I B-06883 POLOZHAYEV N G "C-28450 PORTER D H 'B-34795 POSTMAN B F B-28918 QUINO E A *C-33278 R RANCITELLI L A »A-33004 RASTAS J 'B-29328, B-32461 RAZUMOV, V A 'C-07567 REINHAUT W H B-28918 REPORT OF A SURVEY ON ENV •D-31371 REUTOV, 0 A *F-10866 RICHTER 0 *H-24773 ROBINSON J W C-34432 ROESMER J *F-32072 ROGOWSKA, E G-09396 ROTH, E M 'G-11241 ROTTSCHAFER J M C-31171 ROZENBERG J *F-15266 RUCH R R *A-30457 RUHLING AKE 'H-23436 RUZICKA M H-25927 RYAZANOV, V A "K-05940 SASA T *G-30308 SAVITSKII, i v 0-10361 SAYERS R R 'G-28846 SCHNECK T JR C-26275 SERENIUS, F G-09406, G-12653 SETSUDA S C-19506 SHAKHBAZYAN, G K *K-07576 SHALYA, N G C-07284 SH1RAKAWA K *G-17470 SHIRASAWA T *C-29343 SHOTWELL H P C-2%52 SHTERENGARTS, R Y G-10361 SHULTS W D A-34827 SffiGEL B Z A-33641 SIEGEL S M A-33641 SMITH B S G-27387 SMITH S B C-31862 SMITH, H G-08328 SOKOLOVSKIY, V V 'G-06617 SONODA K G-19190 SOROKINA, S F G-08387 STAHL Q R *A-21751 TADA 0 'G-13154 TAKEUCHIJ G-30308 TALALAEV G K A-14286 TEJNING S 'G-33868 THILLIEZ, G «C-10392, *D-07649 THOMAS M D *H-17710 THOMPSON J E 'D-30511 TOELG G C-28354 TOKUOMI H G-30308 TOMIMATSU Y C-33886 TOYAMA T G-30308 TRAKHTENBERG, I M 'A-06909, *G-08167, *G-10361, K-07576 TSCHOEPEL P C-28354 TSUBAKIT G-30308 TSUCHIYA K 'G-23012 TSUKIYAMA H C-32718 TUDDENHAM, W M C-06045 TYLER W S G-31224 u UEDA K *C-15451 UI J *G-19190 ULFVARSON, U 'G-09056 ULLMANN W W *A-31313 ULRICH W F 'C-34388 UTAGAWA T 'H-27872 VALIC F *C-28583 VEAZIE W H A-12422, L-12423 W WAINERDI R E *C-33042 WALLACE R A *A-34827 WATTS J D B-34795 WAZNA BOGUNSKA, C G-07234 WEISS H V *A-34424 WEISSLER A *C-30510 WEST J M 'A-33058 WHEELER F *E-23809 WHITEMAN J L 'F-22567 WILLISTON, S H *D-12065 WILSON, H N *C-09369 WITSCHI H 'G-34789 WOLOCHOW H W C-26275 VAN TSEI, U F-10866 YOSHINAGA S D-27188 YUILE, C L G-08092 ZAJACZKOWSKI, S G-09396 ZEMSKOV I F *B-31390 ------- SUBJECT INDEX 51 ABATEMENT A-21751, K-28466, K-34100, L-23116, L-23608, L-23610, L-24214, L-25288 ABSORPTION A-29643, B-06883, C-05977, C-09587, C-29770, C-30199, C-30635, C-31862, E-26697, G-06680, G-08328, G-09056, G-18247, H-24773 ABSORPTION (GENERAL) B-06883 ACETALDEHYDE G-11241 ACETIC ACID D-31371, F-06648, G-06617, G-08079, G-11241, H-25826 ACETONE C-09333, C-09751, F-06648, F-09764, G-11241, G-27317, K-05940 ACETYLENES C-09751, C-34939, F-09764, G-11241, H-21691, H-24773 ACIDS A-23S61, B-29328, B-29450, B-32461, C-09333, C-09369, C-09587, C-23771, C-28126, C-30199, C-32476, C-34432, D-31371, F-06648, F-09764, G-06617, G-06680, G-08079, G-11241, H-17710, H-20158, H-21691, H-23696, H-25826, K-05940, K-06677, K-28466, K-34100 ACROLEIN C-09369, G-11241 ACUTE C-15451, G-08167, G-32608, K-05940 ADAPTATION G-09524, H-33046, K-07576 ADMINISTRATION A-31313, B-34795, C-29343, D-29490, D-31371, E-23809, E-28465, H-25927, K-28466, L-12423, L-23608, L-23610, L-24214, L-25288, L-29230, M-23145 ADSORPTION B-06837, B-06883, B-31390, F-22567 ADULTS A-31313, F-11570, G-08328, G-08387, G-18128, G-23012 AEROSOLS B-06884, C-33042, D-30511, D-31112, F-09764, G-08328, G-09396, G-11241, K-05940, K-06677 AGE F-11570, G-33868, G-34756 AIR POLLUTION EPISODES G-07423, G-33868 AIR POLLUTION FORECASTING D-32912 AIR QUALITY CRITERIA A-34827, K-34100 AIR QUALITY MEASUREMENT PROGRAMS A-31313, D-29490, D-31371, L-12423, L-23608, L-23610, L-24214 AIR QUALITY MEASUREMENTS A-06351, A-08489, A-17624, A-21751, A-33641, C-05977, C-07284, C-07567, C-10392, C-28583, C-29343, D-04986, D-06671, D-12065, D-20790, D-26557, D-27188, D-29490, D-29545, D-30511, D-31112, D-31371, D-32912, G-05945, G-06239, G-07319, G-07337, H-20158, H-23436, H-29147, K-05940 AIR QUALITY STANDARDS A-08489, A-29643, C-34815, D-30511, G-05945, G-06680, G-07337, G-11241, G-31280, K-05940, K-06677, K-21133, K-28466, K-34100, K-34664, L-23608, L-23610, L-24214 AIRCRAFT C-05191, E-23744, E-28465 AIRPORTS L-23608 ALCOHOLS C-09333, C-09369, C-09751, C-34388, D-31371, F-06648, F-09764, G-05737, G-06680, G-08079, G-11241, G-13035, K-28466 ALDEHYDES A-23561, B-06837, C-09333, C-09369, C-26275, C-32476, C-32534, C-34939, D-04986, D-31371, F-09764, G-08079, G-11241, K-05940, K-06677 ALFALFA H-17710, H-20158 ALIPHATIC HYDROCARBONS C-09369, C-09751, C-34939, F-06648, F-09764, G-06680, G-11241, H-17710, H-20158, H-21691, H-23696, H-24773, H-25826 ALLERGIES C-15451, L-29230 ALTITUDE A-27081, A-34424, D-12065, E-23744, E-23809, F-09764 ALUMINUM G-11241, K-06677 ALUMINUM COMPOUNDS D-04986, D-20790, F-22567, G-11241 ALUMINUM OXIDES K-06677 ALUMINUM SILICATES F-22567 ALVEOLI G-09406, G-12653, G-31224 AMIDES G-11241 AMINES B-06837, C-34939, F-06648, F-09764, G-05737, G-11241, G-27317 AMINO ACIDS G-09524 AMMONIA B-06837, C-09369, C-09751, C-28126, C-32534, D-04986, F-06648, F-09764, G-11241, G-28846, H-17710, H-20158, H-21691, H-23696 AMMONIUM CHLORIDE C-23771 AMMONIUM COMPOUNDS B-06837, B-29450, C-09369, C-09751, C-23771, C-28126, C-32534, D-04986, F-06648, F-09764, G-11241, G-28846, H-17710, H-20158, H-21691, H-23696 ANALYTICAL METHODS A-21751, A-30017, A-30292, A-30457, A-33004, A-33058, A-33641, A-34424, A-34754, A-34827, B-28918, C-05191, C-05977, C-06045, C-07284, C-07567, C-07772, CMJ8134, C-09333, C-09369, C-09587, C-09-751, C-10392, C-11626, C-19506, C-20944, C-26275, C-27389, C-28126, C-28338, C-28354, C-28450, C-28505, C-28583, C-29480, C-29770, C-30199, C-305IO, C-30635, C-31171, C-31862, C-32476, C-32534, C-33042, C-33277, C-33278, C-33338, C-33886, C-34388, C-34808, C-34815, C-34939, D-07649, D-20790, D-31371, D-32912, F-13348, F-15266, F-32072, G-05470, G-06239, G-06617, G-08079, G-08328, G-09056, G-13035, G-27387, G-28013, G-28030, G-31624, H-33046, H-34881 ANEMIA A-31313 ANIMALS A-21751, A-34827, C-31171, C-31862, C-33042, E-23744, F-09764, F-H570, F-13197, G-05945, G-06617, G-07234, G-08092, G-08167, G-08746, G-09396, G-09397, G-09406, G-09524, G-10361, G-11556, G-12653, G-13446, G-18036, G-21113, G-27801, G-31543, G-31629, G-31705, G-32546, G-32936, G-33868, G-34682, H-23696, H-27872, H-33046, H-34881, K-05940, K-21133 ANNUAL A-33004, D-29490 ANOXIA G-08167 ANTHRACENES F-06648 ANTIDOTES G-29255 ANTIMONY COMPOUNDS A-06351, A-33004, C-06045, D-04986, D-20790, F-06648, F-09764, G-06680, G-08328, G-11241 AREA SURVEYS D-29490, D-31371 AROMATIC HYDROCARBONS C-09333, C-09751, C-32534, C-34939, F-06648, F-09764, G-05737, G-06680, G-08079, G-08746, G-11241, G-27317, G-28846, K-05940, K-06677 ARSENIC COMPOUNDS A-33004, C-09333, C-25431, C-30635, C-32718, C-33338, D-04986, D-27188, F-06648, F-09764, G-06680, G-07423, G-08079, G-08328, G-17470, G-28846, G-31280, G-31543, G-32608, H-23436, K-06677, K-28466, L-23608, L-23610, L-24214 ARSINE F-09764, G-06680, G-08079, G-28846 ASBESTOS A-23561, G-05737, G-06680, G-07423, G-13625, G-27085, K-06677, K-34100, K-34664 ASBESTOSIS G-13625, G-27085 ASHES A-33004, D-27188 ASIA A-29787, B-29450, C-15451, C-19506, C-28126, C-28505, C-29343, C-29480, C-29770, C-30635, C-32476, C-32534, C-32718, D-26557, D-27188, D-31371, D-32912, G-05470, G-07423, G-13154, G-17470, G-19190, G-23012, G-30308, G-31705, G-32546, G-33868, H-27872, L-23116. L-23608, L-23610, L-24214, L-29230, M-23145 ASPHALT G-13625, H-25826 ASPHYXIATION G-11241 ASPIRATORS C-08134 ASTHMA G-07423, G-13625, G-30308, L-29230 ATMOSPHERIC MOVEMENTS A-29787, A-30292, D-06671, D-12065, D-31371, D-32912, K-34664 ATTACK RATES G-08387, G-27085 AUSTRALIA F-13348 AUTOMATIC METHODS C-28214 AUTOMOBILES A-23561, A-31313, D-26557, D-27188, D-32912, K-34100, L-23608, L-23610, L-24214, L-25288 AUTOMOTIVE EMISSIONS A-23561, C-09369, C-26275, D-26S57, D-27188, D-32912, E-26697, L-23608, L-23610, L-24214, L-25288 AUTOPSY F-11570, G-05945, G-08079 AZOLES C-34939 ------- 52 MERCURY AND AIR POLLUTION B BACTERIA C-34388, F-09764, G-11241 BARIUM COMPOUNDS A-06351, C-25431, C-32718, E-26697, G-17470 BARLEY H-17710 BATTERY MANUFACTURING B-34795, C-07284 BELGIUM G-07423 BENZENES C-09333, C-09751, F-06648, F-09764, G-06680, G-08079, G-11241, G-28846 BERYLLIOSIS G-13625 BERYLLIUM G-06«80, G-07423. G-08079, G-11241, G-13446, K-06677 BERYLLIUM COMPOUNDS A-06351, C-09333, C-28354, C-34939, D-04986, D-27188, F-09764, G-06680, G-08079, G-11241, G-13625, G-27085, G-31705, G-32608, K-06677, K-34100, K-34664 BETA PARTICLES C-09333, C-11626 BIO-ASSAY C-33042, G-08079, H-33046 BIOCLIMATOLOGY G-34682 BIOMEDICAL TECHNIQUES AND MEASUREMENT C-05977, C-09333, C-10392, D-06671, F-09764, F-11570, G-05185, G-05470, G-05737,'G-05945, G-06172, G-06176, G-06680, G-07234, G-07319, G-07330, G-07337, G-08079, G-08092, G-08167, G-08328, G-08387, G-08746, G-09056, G-09396, G-09397, G-09406, G-09524, G-10361, G-11241, K-05940, K-06677, K-07576 BIOPSY G-08328, G-18128 BIRDS G-08092, G-33868, H-27872, H-34881 BISMUTH C-06045 BISMUTH COMPOUNDS A-06351 BLOOD CELLS F-09764, G-08746, G-09056, G-09397, G-11556, G-12653, G-13035, G-18036, G-27085, G-32218, G-33504, G-34789 BLOOD CHEMISTRY A-31313, C-05977, C-10392, C-31171, G-06172, G-07234, G-08079, G-08746, G-09056, G-09396, G-09397, G-09524, G-10361, G-13035, G-18247, G-31624, G-32218, G-34621, H-33046, K-07576 BLOOD VESSELS F-11570, G-07234 BODY CONSTITUENTS AND PARTS F-09764, F-11570, G-05185, G-05945, G-06172, G-06176, G-06617, G-06680, G-07234, G-07319, G-07330, G-07337, G-08092. G-08167, G-08328, G-08746, G-09056, G-09396, G-09397, G-09406, G-09524, G-10361, G-11241, G-11556, G-12653, G-13446, K-07576 BODY FLUIDS G-06680, G-07330, G-10361, G-11556, G-13035, G-34621, G-34789 BODY PROCESSES AND FUNCTIONS B-06884, F-09764, G-05185, G-05737, G-05945, G-06172, G-06617, G-06680, G-07234, G-07319, G-07330, G-07337, G-08079, G-08092, G-08167, G-08328, G-08746, G-09396, G-09397, G-09406, G-09524, G-10361, G-11241, G-11556, G-12653, K-05940, K-06677, K-07576 BOILERS D-32912, L-23610 BORON COMPOUNDS A-06351, C-09369 BREATHING C-09333, G-12653, G-13625, G-34621, G-34682 BREATHING APPARATUS D-06671 BREATHING EXERCISES K-05940 BROMIDES C-32718, F-06648, G-34621 BROMINATED HYDROCARBONS F-06648 BROMINE D-20790, H-25826 BROMINE COMPOUNDS C-32718, C-33042, C-33277, C-33278, F-06648, F-09764, G-28846, G-34621, H-25826 BRONCHI G-09406 BRONCHITIS G-07423, G-08387, G-13625, G-30308, L-25288, L-29230 BRONCHOCONSTRICTION G-07423 BRONCHOPNEUMONIA F-09764, G-08387 BUILDINGS A-06909, A-08489, B-06884, C-27389, K-06677 BUTADIENES F-06648 BUTANES C-09369, G-11241 BUTYNES F-09764, G-11241 BUTYRALDEHYDES F-09764, G-11241 BY-PRODUCT RECOVERY A-31548, A-34827, B-29328, B-29450, B-32461 BYSSINOSIS G-27085 CADMIUM C-06045, F-06648, G-06680, G-07319, G-08079, G-08328, G-11241, G-13446, K-06677, K-07576 CADMIUM COMPOUNDS A-29787, C-09333, C-28126, C-28505, C-29343, C-30635, C-32476, C-33338, C-34432, C-34641, D-04986, D-26557, D-27188, F-09764, F-13197, G-06680, G-08079, G-11241, G-17470, G-30308, G-31224, G-31280, G-31705, G-32608, K-06677, K-07576, L-23116, L-23608, L-23610, L-24214, L-29230 CALCIUM COMPOUNDS C-05977, D-04986, E-26697, F-22567, G-06680 CALIBRATION METHODS C-09587, C-30635, C-33886, C-34432, C-34641, D-07649, G-09056 CALIFORNIA D-12065 CANADA A-06351, A-31548, B-30117, G-05737, G-08746, G-21113 CANCER F-09764, G-07423, G-08328, G-13625, G-26740, L-25288 CARBON BLACK B-31390, F-09764, G-06680 CARBON DIOXIDE C-09369, C-09751, C-32534, D-04986, D-32912, E-23744, E-23809, E-28465, G-08079, G-11241 CARBON DISULFIDE F-06648, G-08079, K-05940, K-28466 CARBON MONOXIDE A-23561, C-09369, C-09751, C-32534, D-04986, D-32912, F-09764, G-07423, G-08079, G-11241, G-I3154, G-13625, G-27085, G-27801, G-31705, G-34621, G-34682, H-20158, H-21691, H-24773, H-25826, K-05940, K-28466, K-34100, L-23116, L-23608, L-23610, L-24214, L-25288 CARBON TETRACHLORIDE F-06648, G-11241 CARBONYLS C-09369, F-09764 CARBOXYHEMOGLOBIN G-11241, G-13154, L-25288 CARCINOGENS C-34939, G-26740 CARDIOVASCULAR DISEASES F-11570, G-13625, K-07576 CASCADE SAMPLERS C-23771 CATALYSIS B-06837, B-29450, C-33277 CATALYSTS B-29450 CATALYTIC ACTIVITY C-33277 CATTLE G-32936, H-33046 CELL METABOLISM G-31224, G-34789 CELLS A-29643, F-09764, G-06617, G-08746, G-09056, G-09397, G-11556, G-12653, G-13035, G-18036, G-27085, G-31224, G-32218, G-32936, G-33504, G-34789 CEMENTS A-34424, G-06680, K-06677, K-34100 CENTRIFUGAL SEPARATORS B-29328, B-32461, C-23771 CERAMICS G-08079 CERIUM COMPOUNDS D-20790 CESIUM COMPOUNDS C-09333, D-20790 CHARCOAL B-06837, C-05977, C-34808, G-08079, H-24773 CHEMICAL BONDS F-32072, G-32936, G-34789 CHEMICAL COMPOSITION A-06351, A-17624, C-05977, C-10392, D-12065, D-20790 CHEMICAL METHODS A-34754, C-05977, C-07284, C-09333, C-10392, C-26275, C-30199, C-30635, C-32476, C-32534, F-13348, F-32072, G-28030, G-31624 CHEMICAL PROCESSING A-12422, A-14286, A-3154«, A-34424, A-34827, B-29450, B-30117, B-32461, B-34795, C-23771, D-31371, G-05185, G-OS737, G-10361, G-27317, G-33868, K-05940, K-34100, L-24214 CHEMICAL REACTIONS A-23561, B-06837, B-29328, B-29450, C-28354, C-29652, C-31862, E-26697, F-10866, F-15266, F-32072, G-08746, G-09056, G-11241, G-11556, G-18247, G-31629, K-34100 CHEMISTS G-08079 CHICAGO D-20790 CHILDREN A-06909, A-31313, D-32912, G-18128 CHLORIDES B-32461, C-09333, C-09369, C-09587, C-09751, D-04986, D-06671, F-06648, G-06617, G-08167, G-11241, G-29255, G-32218, H-23696, H-28849, K-06677 CHLORINATED HYDROCARBONS C-09751, C-29480, C-34388, C-34432, C-34939, E-23809, F-06648, F-09764, G-06680, G-08079, G-11241, G-13154, G-31543, G-31705, H-20158, H-27872, K-06677 CHLORINE A-06351, B-06883, B-30117, B-31390, B-34795, C-09369, C-26275, C-28126, C-28450, D-20790, D-31371, D-32912, F-09764, F-15266, G-11241, H-17710, H-21691, H-23696, K-05940, K-28466 CHLORINE COMPOUNDS B-32461, C-09333, C-09369, C-09587, C-09751, C-28126, C-31171, C-32476, C-33277, D-04986, D-06671, F-06648, F-09764, G-06617, G-06680, G-08167, G-11241, G-28846, G-29255, G-31543, G-32218, H-20158, H-23696, H-28849, K-05940, K-06677 CHLOROFORM C-09751, F-06648, F-09764, G-11241 CHLOROSIS H-21691 CHROMATES C-09333, G-32608, K-06677 CHROMATOGRAPHY A-30292, C-09333, C-09751, C-26275, C-28126, C-28505, C-30510, C-30635, C-32476, C-32534, C-33886, D-31371, F-32072, G-08079 CHROMIUM G-06680, G-08079, G-11241, K-06677 ------- SUBJECT INDEX 53 CHROMIUM COMPOUNDS A-06351, A-33004. C-09333. D-20790, D-27188, F-09764, G-06680, G-08079, G-11241, G-32608, K-06677, L-23608, L-23610, L-24214 CHROMOSOMES A-29643 CHRONIC B-28918, C-15451, F-11570, G-05945, G-06176, G-07330, G-07337, G-07423, G-08167, G-09524, G-10361, G-30308, G-32608, G-34756, K-05940, L-29230 CINCINNATI D-04986 CINDERS A-33004 CIRCULATORY SYSTEM F-11570, F-13197, G-05945, G-07234, G-18036, H-33046 CLAY K-06677 CLOUDS E-23744 COAL A-06351, A-29643, A-30017, A-30457, A-33004, D-26557, D-27188, D-29490, E-23809, F-09764, G-08387, H-17710, K-06677 COAL CHARACTERISTICS A-06351, A-29643, A-30457 COAL TARS H-25826 COBALT COMPOUNDS D-20790, D-27188, F-09764 COKE A-14286 COLLECTORS A-31548, B-29328, B-32461, C-05977, C-23771 COLLOIDS G-31629 COLORIMETRY A-21751, C-05977, C-07284, C-08134, C-09333, C-09587, C-20944, C-28450, C-28583, C-29480, C-32476, C-33278, C-34388, C-34815, C-34939, D-32912, G-06239, G-06617 COMBUSTION A-23561, F-09764 COMBUSTION GASES A-29787, A-30017, B-29328, B-32461, C-29770, D-29490, D-32912, G-08079, G-11241, H-17710, H-33046 COMBUSTION PRODUCTS A-14286, A-23561, A-29787, A-30017, A-33004, B-29328, B-32461, C-29770, D-27188, D-29490, D-32912, G-08079, G-11241, H-17710, H-33046, L-23608, L-23610, L-24214 COMMERCIAL AREAS D-04986, D-27188 COMMON COLD G-07423, G-08387, G-13625 COMPUTER PROGRAMS C-09751, C-34641 CONDENSATION B-06883, C-32718 CONDENSATION (ATMOSPHERIC) E-23744, H-25826 CONNECTICUT A-31313 CONSTRUCTION MATERIALS A-34424, G-06680, G-13625, H-25826, K-06677, K-34100 CONTACT PROCESSING B-32461, K-34100 CONTINUOUS MONITORING A-21751, C-29343, C-32534, D-12065, G-32546, G-32608 CONTROL EQUIPMENT A-21751, A-31548, B-06883, B-06884, B-28918, B-29328, B-30117, B-32461, C-05977, C-07772, C-23771, C-32718, C-34432, D-31112, G-06680, G-07319, G-08079, G-08387, K-06677 CONTROL METHODS A-06909, A-29643, A-31548, A-34827, B-06837, B-06883, B-06884, B-28918, B-29328, B-29450, B-30117, B-31390, B-32461, B-34795, C-05977, C-09587, C-29770, C-30199, C-30635, C-31862, D-29545, D-32912, E-26697. F-22567, G-06680, G-07319, G-07337, G-08079, G-08328, G-08387, G-09056, G-18247, G-34756, H-24773, K-34100 CONTROL PROGRAMS B-34795, D-31371, L-23608, L-23610, L-24214, L-25288, M-23145 CONTROLLED ATMOSPHERES C-05191, C-09751, G-11241, H-24773 COOLING A-23561. B-34795, G-31624 COPPER A-29787, G-08328, G-11241, G-13446 COPPER COMPOUNDS A-06351, A-29787, C-06045, C-28126, C-28505, C-30635, D-04986, D-27188, F-13197, G-11241, G-31224, G-31705, K-06677 CORROSION D-26557 COSTS A-33058, B-34795, H-27872, K-34664 COTTON K-06677 COTTONS K-06677 COUGH F-09764 CRITERIA A-34827, C-30635, G-11241, K-34100 CROP SPRAYING G-27801 CROPS A-29787, C-33042, E-23744, H-17710, H-20158, H-21691, K-06677 CYANATES G-05737 CYANIDES A-29787, C-09369, C-32534, G-06680, G-11241, H-17710, H-25826, L-23608, L-23610, L-24214 CYCLIC ALKANES C-09751 CZECHOSLOVAKIA G-31629, H-25927 D DATA ANALYSIS D-29545 DATA HANDLING SYSTEMS C-09751, C-33042, C-34641, D-29545, L-12423 DECOMPOSITION B-29328, C-28354, F-10866, F-32072, G-09056 DENSITY A-30457, C-29480, C-32534, G-31624 DEPOSITION A-34424, G-08328, G-09406 DESIGN CRITERIA B-34795, C-11626, C-31862, C-34641, F-14712, L-12423 DESULFURIZATION OF FUELS B-29450 DETERGENT MANUFACTURING C-09751, H-27872 DIAGNOSIS B-28918, C-33042, F-11570, G-05945, G-08079, G-08328, G-13154, G-17470, G-18128, G-28846, G-30308, G-;32608, G-34621, H-25826, H-33046, LT29230 DIESEL ENGINES F-09764 DIFFUSION C-26275, D-30511, L-25288 DIFFUSION MODELS D-30511, L-25288 DIGESTIVE SYSTEM G-05945, G-07330, G-08092, G-08746, G-09397, G-18036, G-29255, G-29276, G-33504 DIOLEFINS F-06648 DIPHENYLS F-09764, K-05940 DISPERSION A-23561, A-34424, A-34827, C-26275, C-33042, D-30511, D-32912. E-26697, F-09764, G-32936, K-34664, L-25288 DISPERSIONS F-09764, G-31629 DIURNAL A-27081, D-31371, G-093%, G-09397, G-09524, G-10361, K-28466, K-34664 DOGS F-09764, F-11570, F-13197, G-06617, G-08746 DONORA D-04986, G-07423 DRUGS C-34388, G-07330, G-08746, G-11556, G-27085, G-29255 DUST FALL C-29343, D-26557 DUSTS A-29787, B-06883, B-29328, B-32461, C-05977, C-07772, C-09587, C-23771, C-25431, C-29343, C-32534, C-32718, C-34815, D-04986, D-12065, D-26557, D-29545, D-32912, F-09764, G-06680, G-07319, G-08079, G-08328, G-08387, G-11241, G-28030, K-06677, K-28466, M-23145 DYE MANUFACTURING G-26740 ECONOMIC LOSSES H-17710, L-25288 EDUCATION D-31112, E-28465 ELECTRIC POWER PRODUCTION A-33004, A-34827, B-29450, D-29490, D-32912, F-09764, K-34100, L-23610, L-24214 ELECTRICAL MEASUREMENT DEVICES C-10392 ELECTRICAL PROPERTIES B-34795, F-32072 ELECTRICAL RESISTANCE F-32072 ELECTROCHEMICAL METHODS A-34754, C-05977, C-10392, C-26275, C-32534, F-13348, G-28030 ELECTROCONDUCTIVITY ANALYZERS C-32534 ELECTROLYSIS A-08489 ELECTRON MICROSCOPY C-26275 ELECTROSTATIC PRECIPITATORS B-29328, B-32461, C-05977, G-08079 EMISSION STANDARDS B-30117, K-34100, K-34664, L-25288, M-23145 EMPHYSEMA F-09764, G-07423, G-08387, G-13625, G-30308, L-29230 ENFORCEMENT PROCEDURES D-32912 ENGINE EXHAUSTS C-09369, D-26557, D-27188, D-32912, E-26697 ENGINEERS G-08079 ENZYMES C-34388, G-09396, G-09397, G-11241, G-11556, G-21113, G-31224, G-33504 EPIDEMIOLOGY G-23012 EPITHELIUM G-07234 ESTERS C-09333, C-09751, G-11241 ETHERS C-09751, F-06648, G-11241 ETHYL ALCOHOL C-09751, F-06648, F-09764, G-11241 ETHYLENE C-34939, F-06648, F-09764, H-17710, H-20158, H-21691. H-23696, H-24773, H-25826 EUROPE A-06351, A-06909, A-08489, A-14286, A-17624, A-30292, A-34754, B-06883, B-06884, B-29328, B-31390, B-32461, C-07284, C-07567, C-07772, C-08134, C-10392, C-11626, C-20944, C-28338, C-28354, C-28450, C-28583, C-30199, C-30510, C-33277, C-34939, D-06671, D-07649, D-29545, F-06648, F-10866, F-11570, F-15266,F-22567, G-05I85. G-05945, G-06239, G-07234, G-07330, G-07337, G-07423, G-08167, G-08328, G-08387, G-09396. G-09397, G-09406, G-09524, G-10361, G-13035, G-13625, G-27085, G-29255, G-29276, G-31543, G-31624, G-31629, G-32218, G-33868, G-34621, G-34682, G-34789, H-19770, H-22952, H-23436, H-24773, H-25826. H-25927. H-29147, H-33046, H-34881, K-05940, K-06677, K-07576, K-21133, K-28466 ------- 54 MERCURY AND AIR POLLUTION EVAPORATORS F-09764 EXCRETIONS C-15451, G-06172, G-06176, G-06680, G-07234, G-07319, G-07330, G-09396, G-09397, G-13154, G-29276, H-33046 EXHAUST SYSTEMS B-06883, B-06884, B-28918, G-07319 EXPERIMENTAL EQUIPMENT C-10392, C-11626, C-34641, F-14712, G-09056 EXPERIMENTAL METHODS C-34388, C-34815, D-07649, F-11570, G-07234, G-09056, K-05940 EXPLOSIONS G-27317 EXPOSURE CHAMBERS G-07234, G-08092, G-08167, G-12653 EXPOSURE METHODS F-11570, G-05945, G-06680, G-07234, G-08092, G-18036, G-32546, G-34682, H-28849 EYE IRRITATION F-09764, G-07330, G-07423, L-25288 EYES G-07330 FALLOUT C-09333 FARMS G-31543 FEDERAL GOVERNMENTS L-23116, L-29230 FEED LOTS A-34827 FEMALES G-07234, G-08328 FERTILIZING E-23744, E-26697, G-32936, H-34881 FIELD TESTS C-33278 FILTER FABRICS C-07772, C-32718, G-06680, G-08079, K-06677 FILTERS B-06883, B-30117, C-05977, C-07772, C-23771, C-32718, D-31112, G-06680, G-08079, K-06677 FLAME IONIZATION DETECTOR C-09751 FLOW RATES C-09587, C-29480, C-29770, C-31862, G-08167 FLOWERS H-17710, H-21691, H-22952, H-28849 FLOWMETERS G-08079, G-08092 FLUID FLOW C-09587, C-29480, C-29770, C-31862, G-08167 FLUORESCENCE C-32718, C-34388, C-34939, G-07337 FLUORIDES A-23561, B-32461, C-09333, C-32476, D-04986, F-06648, F-09764, G-06680, G-08079, G-11241, G-32608, H-20158 FLUORINATED HYDROCARBONS A-12422, C-09751, F-06648, F-09764, L-12423 FLUORINE A-06351, C-09369, C-11626, G-06680 FLUORINE COMPOUNDS A-23561, B-32461, C-09333, C-09369, C-32476, C-32534, D-04986, D-31371, F-06648, F-09764, G-06680, G-08079, G-11241, G-32608, H-20158, K-06677, K-28466 FOG H-25826 FOOD AND FEED OPERATIONS G-32936 FOODS A-30292, A-31313, A-34754, C-15451, C-30510, D-30511, G-26740, G-31543, G-31705, G-32936, G-33868, H-33046 FORMALDEHYDES A-23561, C-09333, C-09369, C-32476, D-31371, F-09764, G-08079, G-11241, K-05940 FORMIC ACID F-06648, G-11241 FRANCE C-10392, D-07649, F-15266, G-07337, H-19770, H-22952 FREEZING G-31624 FRUITS G-32936, H-21691 FUEL GASES F-09764, H-24773 FUEL OIL PREPARATION B-29450 FUEL OILS B-29450, C-09333, C-32718, C-34939, D-26557, D-27188, E-23809, E-28465, F-09764, L-23608 FUELS A-06351, A-14286, A-29643, A-30017, A-30457, A-33004, A-34424, A-34827, B-29450, C-09333, C-30635, C-32718, C-34939, D-26557, D-27188, D-29490, E-23744, E-23809, E-28465, F-09764, G-08387, G-11241, H-17710, H-24773, H-34881, K-06677, L-23608 FUMES C-05977, C-07772, C-09333, F-09764, G-07234, G-07319, G-07330, G-08079, G-11241 FUNGI F-09764, G-31543 FURNACES B-06883, B-32461, F-09764 GAMMA RADIATION G-05470 GAS CHROMATOGRAPHY C-09333, C-09751, C-28126, C-28505, C-30510, C-30635, C-32534, D-31371, G-08079 GAS SAMPLING C-09333, C-09587, C-26275, C-27389, C-32476, C-32718, D-31112, D-32912, G-06239, G-08079 GASES A-33641, B-06837, B-06883, F-09764, G-08079, G-28846, G-34621, H-20158, H-23696, K-05940 GASOLINES C-30635, F-09764, G-11241 GENETICS G-26740, G-32936 GERMANY A-34754, C-28338, C-28354, F-11570, G-29276, G-32218, G-34621, H-24773, H-25826 GLADIOLI H-17710 GLANDS G-05945, G-13446, G-29276, K-07576 GLASS FABRICS C-07772, C-32718, G-06680, G-08079, K-06677 GOVERNMENTS C-28505, F-09764, L-23116, L-25288, L-29230 GRAPHITE G-06680 GREAT BRITAIN C-07772, D-29545, F-22567, G-07330, G-07423, G-08328, G-31543 GUINEA PIGS F-09764, G-09406, G-12653, G-34682 H HALOGEN GASES A-06351, B-06883, B-30117, B-31390, B-34795, C-05191, C-09369, C-11626, C-26275, C-28126, C-28450, D-20790, D-31371, D-32912, F-09764, F-15266, G-06680, G-11241, G-28846, H-17710, H-21691, H-23696, H-25826, K-05940, K-28466 HALOGENATED HYDROCARBONS A-12422, C-09751, C-29480, C-34388, C-34432, C-34939, E-23809, F-06648, F-09764, G-06680, G-08079, G-11241, G-13154, G-31543, G-31705, H-20158, H-27872, K-06677, L-12423 HAMSTERS F-09764 HARBORS C-30635, L-23608, L-23610, L-24214 HAWAH A-33641 HEADACHE F-09764 HEALTH IMPAIRMENT A-31313, F-09764, G-05185, G-05737, G-06176, G-07234, G-07330, G-07337, G-07423, G-11241, G-31280, G-31543, G-31705, G-32936, G-33868, K-06677 HEALTH STATISTICS G-07337, G-13625, G-27085 HEART F-11570, F-13197, G-05945, G-18036, H-33046 HEAT TRANSFER A-23561, B-29328, B-32461, B-34795, G-09056, G-31624 HEMATOLOGY A-31313, C-05977, C-10392, C-29652, C-31171, C-33338, F-09764, G-06172, G-07234, G-08079, G-08746, G-09056, G-09396, G-09397, G-09524, G-10361, G-11241, G-13035, G-13154, G-18247, G-23012, G-30308, G-31624, G-32218, G-34621, H-33046, K-07576, L-25288 HEMOGLOBIN INTERACTIONS F-09764, G-32218 HEPTANES C-09751, F-06648, G-11241 HEPTENES F-09764 HERBICIDES A-31548, H-27872 HEXANES C-09751, F-06648, G-11241 HEXENES F-09764 HIGHWAYS D-31371 HORMONES G-11241, G-13446 HUMANS A-06909, A-21751, A-31313, A-34827, B-06883, C-09751, C-31171, D-26557, D-32912, F-09764, F-l 1570, G-05185, G-05470, G-07234, G-07319, G-07330, G-07337, G-07423, G-08079, G-08328, G-08387, G-08746, G-09396, G-11241, G-11556, G-18128, G-23012, G-26740, G-27801, G-29255, G-29276, G-30308, G-31543, G-31624, G-31705, G-32608, G-32936, G-33868, G-34621, G-34756, G-34789, K-21133, K-34664, L-29230 HUMIDITY B-06837, G-34682 HYDROCARBONS A-23561, A-30457, B-29450, C-05191, C-09333, C-09369, C-09751, C-32534, C-34388, C-34939, D-31112, F-06648, F-09764, G-05737, G-06680, G-08079, G-08746, G-11241, G-27317, G-28846, H-17710, H-20158, H-21691, H-23696, H-24773, H-25826, K-05940, K-06677, K-34100, L-23116, L-25288 HYDROCHLORIC ACID C-09587, C-28126, D-31371, H-17710, H-21691, H-25826, K-05940 HYDROCYANIC ACID C-32476, H-23696, H-25826 HYDROFLUORIC ACID A-23561, C-28126, C-32476, G-06680, G-11241, H-17710, H-20158 HYDROGEN B-30117, B-34795, G-11241 HYDROGEN SULFIDE A-12422, A-23561, A-29787, C-09369, C-26275, C-28126, C-28450, C-32476, C-32534, C-34939, D-31371, G-11241, H-17710, H-20158, H-21691, H-23696, K-28466, L-12423 HYDROLYSIS G-11241 HYDROXIDES F-06648, G-32218, H-25826, K-06677 HYPOXIA G-18128 I ICE A-34424 ILLINOIS A-30457, D-20790 IMMUNOLOGY K-07576 IMPINGERS C-09587, C-33278, C-34815, G-08079 INCINERATION D-29490, F-09764, K-34100 INDUSTRIAL AREAS A-29787, C-07284, C-07567, D-04986, D-27I88, D-31371, D-32912, G-08387, G-27085, H-23436, K-06677, K-07576, L-23608, L-23610, L-24214 ------- SUBJECT INDEX 55 INDUSTRIAL EMISSION SOURCES A-08489, A-12422, A-14286, A-17624, A-21751, A-2356I, A-27081, A-29643, A-29787, A-30292, A-31313, A-31548, A-33004, A-33058, A-34424, A-34827, B-06883, B-28918, B-29328, B-29450, B-30117, B-32461, B-34795, C-07284, C-09751, C-23771, C-28583, D-07649, D-29490, D-29545, D-31371, D-32912, F-09764, G-05185, G-05737, G-07319, G-07330, G-07337, G-07423, G-08387, G-08746, G-10361, G-26740, G-27317, G-28030, G-31280, G-32936, G-33504, G-33868, G-34756, H-23436, H-27872, H-29147, H-33046, H-34881, K-05940, K-07576, K-21133, K-34100, L-23608, L-23610, L-24214 INFANTS G-18128 INFECTIOUS DISEASES G-26740 INFRARED SPECTROMETRY C-05191, C-06045, C-09751, G-08079 INGESTION E-26697, G-29276, G-34756, H-27872 INHIBITION G-09396, G-09397, G-13035, G-21113, G-31224, H-22952 INORGANIC ACIDS A-23561, B-29328, B-29450, B-32461, C-09369, C-09587, C-23771, C-28126, C-30199, C-32476, C-34432, D-31371, F-09764, G-06680, G-11241, H-17710, H-20158, H-21691, H-25826, K-05940, K-28466, K-34100 INSTRUMENTATION A-30017, C-I0392, C-26275, D-12065 INTERNAL COMBUSTION ENGINES F-09764 INTESTINES G-33504 IODIMETRIC METHODS C-09333, C-32476 IODINE C-11626, H-25826 IODINE COMPOUNDS C-05191, C-05977, C-09333, C-09587, C-28214, G-06617, G-13446, H-25826 IONIZATION C-07284 IONS C-06045, C-07284, C-30635, C-3I171, C-32534, C-33277, E-26697, F-09764, F-22567, F-32072, G-11556, G-13446, G-31224, G-31624, G-32936 IRON B-29450, G-06680, G-11241, G-13446, H-23436, L-23608, L-24214 IRON COMPOUNDS A-30457, A-33004, B-29450, B-32461, C-06045, C-28126, C-28505, C-32718, D-04986, D-20790, D-31371, F-09764, G-06680, G-11241 IRON OXIDES B-29450, C-06045, G-06680 IRRADIATION CHAMBERS C-29770 ISOPENTANES F-06648 ISOTOPES C-09333, C-28338, C-29770, C-32534, C-33042, C-34641, F-10866, F-15266, F-32072, G-05470, G-06172, G-08746, G-18036, G-34789 ITALY G-34682 JAPAN A-29787, B-29450, C-15451, C-19506, C-28126, C-28505, C-29343, C-29480, C-29770, C-30635, C-32476, C-32534, C-32718, D-26557, D-27188, D-31371, D-32912, G-05470, G-07423, G-13154, G-17470, G-19190, G-23012, G-30308, G-32546, G-33868, H-27872, L-23116, L-23608, L-23610, L-24214, L-29230, M-23145 JET AIRCRAFT E-23744, E-28465 K KETONES A-23561, C-09333, C-09369, C-09751, C-34939, F-06648, F-09764, G-06680, G-11241, G-27317, K-05940 KIDNEYS G-05945, G-06680, G-07234, G-07319, G-07330, G-08092, G-08746, G-11556, G-12653, G-18036, G-29276, G-33504, H-33046, K-07576 KRAFT PULPING A-12422, A-31548 LABORATORY ANIMALS F-09764, F-11570, F-13197, G-05945, G--06617, G-07234, G-08167, G-08746, G-09396, G-09397, G-09406, G-09524, G-10361, G-11556, G-12653, G-13446, G-18036, G-21113, G-31629, G-32546, G-34682, H-23696, H-33046, K-05940, K-21133 LABORATORY FACILITIES C-09333 LAKES A-34754, D-30511, E-26697, E-28465 LASERS C-26275 LEAD C-05977, C-06045, F-06648, F-11570, G-06680, G-07423, G-08079, G-11241, K-06677, K-07576 LEAD COMPOUNDS A-06351, A-23561, A-29787, A-31313, B-31390, C-05977, C-09333, C-11626, C-25431, C-26275, C-28126, C-28450, C-30635, C-32476, C-32534, C-32718, C-33042, C-33338, D-04986, D-07649, D-27188, D-32912, F-06648, F-11570, G-06680, G-08079, G-11241, G-13154, G-13625, G-17470, G-27085, G-27801, G-31280, G-32218, G-32608, G-34789, H-19770, K-06677, K-07576, K-28466, L-23608, L-23610, L-24214, L-25288 LEAVES D-32912, H-19770, H-20158, H-21691, H-22952, H-23696 LEGAL ASPECTS A-29787, C-28505, D-32912, L-23116, L-29230, M-23145 LEGISLATION D-32912, L-29230 LEUKOCYTES F-09764, G-27085 LIGHT RADIATION A-23561, B-29450, C-05191, E-23809, F-09764 LIMESTONE G-06680 LIPIDS F-11570, G-09396, G-34789 LIQUIDS C-09751, C-29652, C-33277, C-34641, F-06648, G-11241, G-18036, H-19770 LITHIUM COMPOUNDS A-06351, F-15266 LIVER G-05945, G-08092, G-09397, G-18036, G-29276, G-33504 LOCAL' GOVERNMENTS L-23116 LONDON G-07423 LOWER ATMOSPHERE D-12065 LUBRICANTS B-29450 LUNG CANCER G-07423, G-08328, G-13625, L-25288 LUNGS G-05945, G-06680, G-08092, G-08328, G-08746, G-09406, G-12653, G-13035, G-18036, G-29276, G-31224, G-32546 LYMPHOCYTES F-09764 M MAGNESIUM F-06648, G-11241 MAGNESIUM COMPOUNDS C-06045, D-04986, F-13197, G-06680, G-11241, G-32608, H-25927 MALES G-07234, G-08328, G-08387 MANGANESE G-06680, G-07423, G-08079, G-08328, G-11241, K-05940, K-06677 MANGANESE COMPOUNDS A-06351, B-06883, C-06045, C-28126, C-28505, C-30199, C-32718, D-04986, D-20790, D-27188, F-13197, G-06680, G-08079, G-11241, G-13625, G-17470, G-32608, K-05940, K-06677, K-28466 MARYLAND D-04986 MASS SPECTROMETRY C-26275, C-34641 MATERIALS DETERIORATION D-26557 MATHEMATICAL ANALYSES F-22567, G-08092 MATHEMATICAL MODELING G-08092 MAXIMUM ALLOWABLE CONCENTRATION A-08489, A-29643, C-34815, G-05945, G-06680, G-07337, K-05940, K-06677, K-21133, K-28466, K-34664, L-23608, L-23610, L-24214 MBTH METHOD C-32476 MEASUREMENT METHODS A-21751, C-07284, C-07567, C-07772, C-09333, C-10392, C-15451, C-19506, C-25431, C-26275, C-28126, C-28214, C-28338, C-28450, C-28583, C-29343, C-29652, C-31862, C-32534, C-34432, C-34641, D-07649, D-12065, D-31112, D-31371, D-32912, G-05945, G-06239, G-06617, G-08079, G-09056, G-13035, G-26740, G-32546, G-32608, K-05940 MEDICAL PERSONNEL C-15451, G-08079 MEETINGS E-23809 MEMBRANE FILTERS C-07772, C-32476, G-08079 MEMBRANES F-13197, G-08746, G-32218 MERCAPTANS A-12422, C-34939, D-31371, G-11241, H-25826, L-12423 MERCURY A-06909, A-08489, B-06837, B-06883, B-06884, C-05191, C-05977, C-06045, C-07284, C-07567, C-08134, C-09587, C-10392, C-15451, D-06671, D-12065, F-06648, F-10866, F-11570, F-14712, F-32072, G-05185, G-05470, G-05737, G-05945, G-06172, G-06239, G-06680, G-07319, G-07330, G-07337, G-07423, G-08079, G-08092, G-08167, G-08328, G-08387, G-08746, G-09056, G-09396, G-09397, G-09406, G-09524, G-10361, G-11241, G-11556, G-13446, H-23696, K-05940, K-06677, K-07576, K-21133 MERCURY COMPOUNDS A-06351, A-08489, A-12422, A-14286, A-17624, A-21751, A-23561, A-27081, A-29643, A-29787, A-30017, A-30292, A-30457, A-31313, A-31548, A-33004, A-33058, A-33641, A-34424, A-34754, A-34827, B-28918, B-29328, B-29450, B-30117, B-31390, B-32461, B-34795, C-05977. C-06045, C-07284, C-07567, C-07772, C-08134, C-09333, C-09369, C-09587, C-09751, C-10392, C-11626, C-19506, C-20944, C-23771, C-25431, C-26275, C-27389, C-28126, C-28214, C-28338, C-28354, C-28450, C-28505, C-28583, C-29343, C-29652, C-29770, C-30199, C-30510, C-30635, C-31171, C-31862, C-32476, C-32534, C-32718, C-33042, C-33277, C-33278, C-33338, C-33886, C-34388, C-34432, C-34641, C-34S08, C-34815, C-34939, D-04986, D-06671, ------- 56 MERCURY AND AIR POLLUTION D-07649, D-20790, D-26557, D-27188, D-29490, D-29545, D-30511, D-31112, D-31371, D-32912, E-23744, E-23809, E-26697, E-28465, F-06648, F-09764, F-10866, F-11570, F-13197,F-13348, F-15266, F-22567, F-32072, G-05185, G-05470, G-05737, G-05945, G-06172, G-06176, G-06239, G-06617, G-06680, G-07234, G-07319, G-08079, G-08092, G-08167, G-08387, G-08746, G-09056, G-09396, G-09397, G-09406, G-09524, G-10361, G-11241, G-11556, G-12653, G-13035, G-13154, G-13625, G-17470, G-18036, G-18128, G-18247, G-19190, G-21113, G-23012, G-26740, G-27085, G-27317, G-27387, G-27801, G-28013, G-28030, G-28846, G-29255, G-29276, G-30308, G-31224, G-31280, G-31543, G-31624, G-31629, G-31705, G-32218, G-32546, G-32608, G-32936, G-33504, G-33868, G-34621, G-34682, G-34756, G-34789, H-17710, H-19770, H-20158, H-21691, H-229S2, H-23436, H-24773, H-25826, H-25927, H-27872, H-28849, H-29147, H-33046, H-34881, K-05940, K-06677, K-07576, K-28466, K-34100, K-34664, L-12423, L-23116, L-23608, L-23610, L-24214, L-25288, L-29230, M-23145 METABOLISM A-29643, A-31313, G-06172, G-06680, G-08746, G-09406, G-09524, G-13154, G-21113, G-27801, G-31629, G-31705, G-33504, K-07576 METAL COMPOUNDS A-06351, A-08489, A-12422, A-14286, A-17624, A-21751, A-23561, A-27081, A-29643, A-29787, A-30017, A-30292, A-30457, A-31313, A-31548, A-33004, A-33058, A-33641, A-34424, A-34754, A-34827, B-06883, B-28918, B-29328, B-29450, B-30117, B-31390, B-32461, B-34795, C-05977, C-06045, C-07284, C-07567, C-07772, C-08134, C-09333, C-09369, C-09587, C-09751, C-10392, C-11626, C-19506, C-20944, C-23771, C-25431, C-26275, C-27389, C-28126, C-282I4, C-28338, C-28354, C-28450, C-28505, C-28583, C-29343, C-29652, C-29770, C-30199, C-30510, C-30635, C-31171, C-31862, C-32476, C-32534, C-32718, C-33042, C-33277, C-33278, C-33338, C-33886, C-34388, C-34432, C-34641, C-34808, C-34815, C-34939, D-04986, D-06671, D-07649, D-20790, D-26557, D-27188, D-29490, D-29545, D-30511, D-31112, D-31371, D-32912, E-23744, E-23809, E-26697, E-28465, F-06648, F-09764, F-10866, F-11570, F-13197, F-13348, F-15266, F-22567, F-32072,G-05185, G-05470, G-05737, G-05945, G-06172, G-06176, G-06239, G-06617, G-06680, G-07234, G-07319, G-08079, G-08092, G-08167, G-08328, G-08387, G-08746, G-09056, G-09396, G-09397, G-09406, G-09524, G-10361, G-11241, G-11556, G-12653, G-13035, G-13154, G-13625, G-17470, G-18036, G-18128, G-18247, G-19190, G-21113, G-23012, G-26740, G-27085, G-27317, G-27387, G-27801, G-28013, G-28030, G-28846, G-29255, G-29276, G-30308, G-31224, G-31280, G-31543, G-31624, G-31629, G-31705, G-32218, G-32546, G-32608, G-32936, G-33504, G-33868, G-34621, G-34682, G-34756, G-34789, H-17710, H-19770, H-20158, H-21691, H-22952, H-23436, H-24773, H-25826, H-25927, H-27872, H-28849, H-29147, H-33046, H-34881, K-05940, K-06677, K-07576, K-28466, K-34100, K-34664, L-12423, L-23116, L-23608, L-23610, L-24214, L-25288, L-29230, M-23145 METAL FABRICATING AND FINISHING A-21751, G-08387, G-10361 METAL POISONING A-21751, A-29643, A-31313, B-28918, C-15451, C-33338, F-11570, G-05185, G-05470, G-05737, G-05945, G-06172, G-06176, G-07234, G-07319, G-07330, G-07337, G-08167, G-08746, G-09396, G-09397, G-09406, G-09524, G-11556, G-13625, G-17470, G-18128, G-19190, G-21113, G-23012, G-27085, G-29276, G-31280, G-31543, G-31705, G-32218, G-32546, G-32608, G-32936, G-33868, G-34756, K-21133, M-23145 METALS A-06909, A-08489, A-29787, B-06837, B-06883, B-06884, B-29328, B-29450, C-05191, C-05977, C-06045, C-07284, C-07567, C-08134, C-09587, C-10392, C-15451, D-06671, D-12065, F-06648, F-09764, F-10866, F-11570, F-14712, F-32072, G-05185, G-05470, G-05737, G-05945, G-06172, G-06239, G-06680, G-07234, G-07319, G-07330, G-07337, G-07423, G-08079, G-08092, G-08167, G-08328, G-08387, G-08746, G-09056, G-09396, G-09397, G-09406, G-09524, G-10361, G-11241, G-11556, G-13446, H-23436, H-23696, K-05940, K-06677, K-07576, K-21133, L-23608, L-24214 METEOROLOGY A-23561, A-27081, A-29787, A-30292, A-34424, A-34754, B-06837, C-09369, C-33042, D-06671, D-12065, D-31371, D-32912, E-23744, E-23809, E-26697, G-34682, H-25826, H-28849, K-34664, L-25288 METHANES C-09751, F-06648, G-11241 MEUSE VALLEY G-07423 MICE F-09764, G-08167, G-10361, G-11556, G-13446, G-31629 MICROMETEOROLOGY A-23561, E-23809, L-25288 MICROORGANISMS A-29643, B-29450, C-34388, F-09764, G-11241, G-31543 MIDDLE ATMOSPHERE E-23744, E-23809 MILK G-32936, H-33046 MINERAL PROCESSING A-21751, A-27081, A-33058, A-34424, B-06883, C-28583, G-05737, G-08387, G-10361, G-33504, H-29147, H-33046, K-34100 MINERAL PRODUCTS A-23561, A-34754, C-06045, G-05737, G-06680, G-07423, G-13625, G-27085, K-06677, K-34100, K-34664 MINING A-21751, A-27081, C-28583, G-05737, G-08387, G-33504, H-29147, H-33046 MISTS C-09333, C-09587, C-23771, F-09764, G-07234 MOBILE C-25431 MOLYBDENUM F-09764, G-06680, G-11241, K-06677 MOLYBDENUM COMPOUNDS A-06351, G-06680, G-11241, G-32608, K-06677 MONITORING A-21751, C-15451, C-25431, C-26275, C-29343, C-32534, D-07649, D-12065, G-32546, G-32608 MONTHLY K-34664 MORBIDITY G-08387 MORTALITY A-31313, G-08167, G-19190, G-31705 MOTTLING H-21691 MOUTH G-07330 MULTIPLE CHAMBER INCINERATORS F-09764 MUTATIONS A-29643, G-26740 N NAPHTHALENES F-06648 NATURAL GAS F-09764 NECROSIS F-09764, H-21691 NERVOUS SYSTEM A-31313, G-05185, G-05945, G-07337, G-08092, G-08167, G-08746, G-09397, G-09406, G-11241, G-11556, G-17470, G-18036, G-29255, G-31543, H-33046, K-21133 NEUTRON ACTIVATION ANALYSIS A-30457, A-33004, A-34424, C-11626, C-29770, C-30510, C-31171, C-33042, D-20790, F-32072, G-05470, G-08328, G-09056, G-31624, H-33046, H-34881 NEW YORK CITY G-07423 NEW YORK STATE G-07423 NICKEL F-09764, G-08079, G-11241, G-13446, K-06677 NICKEL COMPOUNDS A-06351, A-12422, C-09369, D-27188, F-13197, G-06680, G-08079, G-11241, G-31280, K-06677, L-12423 NITRATES A-23561, C-09369, C-23771, F-09764, G-27317, G-32218 NITRIC ACID C-23771, C-34432, G-06680, K-34100 NITRIC OXIDE (NO) A-23561, C-09369, C-29480, C-32534, F-09764, G-11241 NITRITES G-06617 NITROGEN G-11241 NITROGEN DIOXIDE (N02) A-23561, C-09333, C-09369, C-28126, C-29480, C-32534, D-32912, F-09764, G-06680, G-11241, G-31705, K-34100 NITROGEN OXIDES A-23561, C-09333, C-09369, C-28126, C-29480, C-32476, C-32534, D-04986, D-26557, D-31371, D-32912, F-06648, F-09764, G-06680, G-08079, G-11241, G-27317, G-27801, G-31705, H-17710, K-28466, K-34100, L-23116, L-25288 NITROGEN TRIOXIDE (NO3) C-32534 NITROUS ACID F-09764 NITROUS OXIDE (N2O) G-11241 NON-INDUSTRIAL EMISSION SOURCES A-23561, A-31548, A-34827, B-30117, B-34795, C-29343, C-30635, C-33042, D-26557, D-31371, E-23744, E-23809, E-26697, E-28465, F-09764, G-23012, G-27801, G-28030, G-31705, G-32936, H-29147, H-33046, H-34881, L-23116, L-23608, L-23610, L-24214 NON-URBAN AREAS D-04986, F-09764, G-31543 o OCCUPATIONAL HEALTH A-08489, A-31313, B-28918, C-15451, C-27389, C-28583, C-34815, D-06671, D-31112, G-05470, G-05737, G-06176, G-06680, G-07319, G-07330, G-07337, G-08079, G-08387, G-08746, G-10361, G-13154, G-23012, G-27085, G-27317, G-28846, G-32608, G-33504, G-34621, G-34682, G-34756, K-06677, K-07576, K-21133 ------- SUBJECT INDEX 57 OCEANS A-27081, A-30292, C-33042, E-23744, E-28465 OCTANES F-06648 ODORIMETRY D-31371, K-05940 ODORS D-31371, G-11241, K-05940, L-23608, L-23610 OHIO D-04986 OLEFINS C-09751, C-34939, F-06648, F-09764, G-11241, H-17710, H-20158, H-21691, H-23696, H-24773, H-25826 OPEN BURNING F-09764 OPERATING VARIABLES B-34795 ORGANIC ACIDS C-32476, D-31371, F-06648, F-09764, G-06617, G-08079, G-11241, H-23696, H-25826, K-06677 ORGANIC DISEASES G-05945 ORGANIC NITROGEN COMPOUNDS B-06837, C-32534, C-34939, F-06648, F-09764, G-05737, G-06239, G-11241, G-26740, G-27317, K-06677 ORGANIC PHOSPHORUS COMPOUNDS C-34939, H-27872, K-06677, K-07576, L-23608, L-23610, L-24214 ORGANIC SULFUR COMPOUNDS A-12422, A-29643, C-34939, D-31371, F-13348, G-06239, G-06617, G-09524, G-11241, G-32936, H-25826, K-06677. L-12423 ORGANOMETALLICS A-31548, A-34827, B-31390, C-07772, C-30510, C-33278, D-06671, D-26557, D-30511, G-23012, G-30308, G-31543, K-06677, L-23608, L-23610, L-24214, L-29230 ORSAT ANALYSIS G-08079 OUTPATIENT VISITS G-05185 OXIDANTS C-26275, C-32476, C-32534, D-26557, F-09764, K-34100, L-23116, L-25288 OXIDATION E-26697, G-08746, G-11241, G-11556, G-18247 OXIDES A-06351, A-12422, A-23561, A-29787, B-06883, B-29450, C-05191, C-06045, C-09333, C-09369, C-09751, C-28126, C-28450, C-29343, C-29480, C-32476, C-32534, D-04986, D-26557, D-31371, D-32912, E-23744, E-23809, E-28465, F-06648, F-09764, G-06680, G-07423, G-08079, G-11241, G-13154, G-13625, G-27085, G-27317, G-27801, G-28846, G-31705, G-34621, G-34682, H-17710, H-19770, H-20158, H-21691, H-23696, H-24773, H-25826, H-25927, K-05940, K-06677, K-28466, K-34100, L-12423, L-23116, L-23608, L-23610, L-24214, L-25288, M-23145 OXYGEN B-31390, C-28354, F-09764, G-11241, H-24773 OXYGEN CONSUMPTION D-31371, G-31224 OZONE A-23561, B-31390, C-09333, C-09369, C-28126, C-32476, C-34388, F-09764, G-06680, G-11241 PACKED TOWERS B-29328, B-32461 PAINT MANUFACTURING A-31313, G-33504 PAINTS A-31313, C-09751 PAPER CHROMATOGRAPHY A-30292, C-33886, F-32072 PAPER MANUFACTURING A-12422, A-31548, B-29450 PARTICLE COUNTERS C-26275 PARTICLE SIZE A-23561, A-33641, C-23771, C-26275, C-29343 PARTICULATE CLASSIFIERS A-23561, A-33641, C-23771, C-26275, C-29343 PARTICULATE SAMPLING C-08134, C-09333, C-23771, D-20790, G-06239, G-08079 PARTICULATES A-23561, A-29787, A-30292, A-33641, B-06883, B-06884, B-29328, B-32461, C-05977, C-07772, C-08134, C-09333, C-09587, C-23771, C-25431, C-26275, C-29343, C-32534, C-32718, C-33042, C-34815, D-04986, D-12065, D-20790, D-26557, D-29545, D-30511, D-31112, D-31371, D-32912, E-23744, E-23809, E-28465, F-09764, G-06680, G-07234, G-07319, G-07330, G-08079, G-08328, G-08387, G-09396, G-11241, G-28030, G-31705, H-17710, H-25826, K-05940, K-06677, K-28466, K-34100, L-23116, L-23608, L-23610, L-24214, L-25288, M-23145 PATHOLOGICAL TECHNIQUES F-11570, G-05945, G-07234, G-08092, K-07576 PENNSYLVANIA D-04986, G-07423 PENTANES C-09751, F-06648 PERMITS L-25288 PEROXIDES C-09369 PEROXYACETYL NITRATE A-23561, F-09764 PEROXYACYL NITRATES A-23561, F-09764 PERSONNEL C-15451, G-08079 PESTICIDES A-23561, A-30292, D-06671, E-23744, E-23809, E-28465, G-05737, G-07423, G-08167, G-11556, G-26740, G-27801, G-31543, G-31705. H-17710, H-27872 PETROLEUM REFINING D-31371 PETUNIAS H-22952 PH C-09333, C-27389 PHENOLS C-34388, F-06648, K-28466 PHENYL COMPOUNDS C-32534, C-34939, F-09764, G-08746, K-05940 PHENYLS C-32534, C-34939 PHOSPHATES C-23771, G-06680, G-08167, G-32218 PHOSPHINE C-09369, G-06680 PHOSPHORESCENCE C-34939 PHOSPHORIC ACID C-23771 PHOSPHORUS COMPOUNDS A-06351. C-09369, C-23771, F-06648, G-06680, G-08167, G-32218, K-28466 PHOTOCHEMICAL REACTIONS A-23561, F-15266, K-34100 PHOTOELECTRIC PHENOMENA C-25431 PHOTOGRAPHIC METHODS C-25431, G-28013 PHOTOMETRIC METHODS C-09333, C-15451, C-19506, C-26275, C-28126, C-28583, C-29652, C-31862, C-32534, C-34641, G-09056, G-13035, K-05940 PHOTOSYNTHESIS G-27801, H-21691 PHTHALIC ACID F-06648 PHYSICAL STATES A-08489, A-17624, A-33641, A-34424, B-06837, B-06883, B-06884, B-31390, C-05977, C-07284, C-07567, C-07772, C-09333, C-09751, C-10392, C-15451, C-20944, C-28214, C-28583, C-29652, C-31862, C-33277, C-33886, C-34641, C-34815, D-12065, D-29490, D-29545, D-30511, F-06648, F-09764, F-14712, G-05470, G-05945, G-07234, G-08079, G-08092, G-08167, G-08746, G-09056, G-09396, G-09397, G-09524, G-11241, G-18036, G-18128, G-18247, G-21113, G-28846, G-31629, G-34621, H-19770, H-20158, H-22952, H-23696, H-25826, H-28849, K-05940, K-07576, K-21133 PHYTOTOXICANTS A-31548, H-23696, H-27872 PLANS AND PROGRAMS A-31313, B-34795, D-29490, D-31371, L-12423, L-23608, L-23610, L-24214, L-25288, M-23145 PLANT DAMAGE D-26557, F-09764, G-27801, H-17710, H-19770, H-20158, H-21691, H-22952, H-23696, H-25826, H-25927, H-28849, L-25288 PLANT GROWTH G-27801, H-21691, H-24773 PLANT INDICATORS H-23436, H-25927 PLANTS (BOTANY) A-29787, A-34754, A-34827, C-33042, D-32912, E-23744, F-09764, G-29255, G-32936, H-17710, H-19770, H-20158, H-21691, H-22952, H-23436, H-23696, H-24773, H-28849, H-29147, K-06677 PLASTICS C-09587, C-09751, G-11241, K-06677 PNEUMOCONIOSIS G-08387, G-13625, G-27085, G-32608 PNEUMONIA G-18128 POLAROGRAPHIC METHODS C-05977, C-32534, F-13348 POLLENS F-09764 POLYMERIZATION B-29450 POLYNUCLEAR COMPOUNDS C-34939, F-06648 PORTABLE C-23771, C-30199 POTASSIUM COMPOUNDS C-30199, D-04986, F-06648 POULTRY F-09764, G-32936, H-33046 POWER SOURCES F-09764 PRECIPITATION A-34424, A-34754, C-09369, C-33042, E-26697 PRESSURE C-09751, F-09764, F-22567 PRESSURE (ATMOSPHERIC) A-27081 PRIMARY METALLURGICAL PROCESSING A-29787, A-34424, A-34827, B-29328, B-29450, B-32461, C-28583, G-10361, H-23436, L-23610, L-24214 PRIMATES F-09764, G-18036 PRINTING G-26740 PROCESS MODIFICATION B-30117 PROPIONALDEHYDES G-11241 PROTEINS F-11570, F-13348, G-09524, G-32218, G-32936, G-34789, K-07576 PUBLIC AFFAIRS L-29230 PUBLIC INFORMATION L-29230 PULMONARY FUNCTION F-09764, G-18128, G-30308 PULMONARY RESISTANCE F-09764 PYRENES C-34939 QUARTZ G-06680, K-06677 QUINOLINES F-06648 QUOJONES C-34939, F-06648 R RABBITS F-09764, G-07234, G-08746, G-09396, G-09397, G-09524, G-10361, G-18036, H-33046 RADIATION COUNTERS G-09056 RADIATION MEASURING SYSTEMS C-25431, C-28338, G-09056 ------- 58 MERCURY AND AIR POLLUTION RADIOACTIVE RADIATION C-09333, C-11626, C-28338, C-29770, C-32534, C-33042, F-10866, F-32072, G-05470, G-08746, G-09056, G-09406, G-12653, G-13446, G-26740, G-27801, H-27872 RADIOACTIVE TRACERS C-28338, C-29770, F-10866, F-32072, G-08746, G-09406, G-12653, G-13446 RADIOGRAPHY C-32718, G-09406, G-18036, G-30308 RADON C-09369 RAIN A-34754, C-33042, E-26697 RATS F-09764, G-05945, G-11556, G-18036, G-21113, G-32546, K-21133 REACTION KINETICS C-09587, C-29480, F-32072, G-11241 REACTION MECHANISMS A-29643, E-26697, F-13348, F-22567, G-07319, G-08328, G-18247, G-31629, G-32936 RECORDING METHODS C-10392, C-25431, F-11570, G-28013 REDUCTION C-29652, C-31862, G-08746, G-11241, G-11556, G-31629 REFRACTORIES G-08079 REGIONAL GOVERNMENTS C-28505, F-09764 REGULATIONS A-29787, C-28505, L-29230 RENDERING A-31548 REPRODUCTION G-31705, G-33868 RESEARCH INSTITUTES B-34795, E-28465 RESEARCH METHODOLOGIES C-33042, C-34815, G-07337 RESEARCH PROGRAMS C-29343, E-23809, E-28465, H-25927 RESIDENTIAL AREAS B-06883, B-06884, D-04986, D-27188, D-31371 RESIDUAL OILS B-29450, C-32718 RESPIRATION H-23696, H-24773 RESPIRATORY DISEASES F-09764, G-05737, G-07423, G-08387, G-13625, G-18128, G-27085, G-30308, G-32608, L-25288, L-29230 RESPIRATORY FUNCTIONS A-34424, C-09333, D-31371, F-09764, G-08328, G-09406, G-12653, G-13035, G-13625, G-18128, G-30308, G-31224, G-34621, G-34682 RESPIRATORY SYSTEM G-05945, G-06680, G-08092, G-08167, G-08328, G-08746, G-09406, G-12653, G-13035, G-18036, G-29276, G-31224, G-32546 RETENTION F-09764, G-09406, G-13035, G-29276, G-31629, G-32546, G-34621, H-27872, H-29147 RIVERS C-33042, E-28465, G-23012, L-23608, L-23610, L-24214 RUBBER MANUFACTURING G-05737 SAFETY EQUIPMENT D-06671, G-34756 SALTZMAN METHOD C-29480, C-32476 SAMPLERS C-07772, C-08134, C-09587, C-23771, C-26275, C-28450, C-32476, C-33278, C-34815, D-20790, D-29545, G-08079 SAMPLING METHODS A-33641, C-05977, C-07567, C-07772, C-08134, C-09333, C-09587, C-23771, C-26275, C-27389, C-28126, C-28214, C-28450, C-32476, C-32534, C-32718, C-33278, C-34641, C-34815, D-04986, D-20790, D-29545, D-31112, D-32912, G-06239, G-08079, G-28030 SAMPLING PROBES C-34641 SAN FRANCISCO D-12065 SCRUBBERS A-21751, B-06883, B-29328, B-32461, C-34432 SEASONAL A-27081, D-04986, D-12065, D-31371 SELENIUM COMPOUNDS A-33004, B-29328, B-32461, C-28354, C-33886, G-06680, G-08079, G-31629, G-32608, H-25826 SETTLING CHAMBERS A-31548 SETTLING PARTICLES A-29787, B-06883, B-29328, B-32461, C-05977, C-07772, C-09587, C-23771, C-25431, C-29343, C-32534, C-32718, C-34815, D-04986, D-12065, D-26557, D-29545, D-32912, F-09764, G-06680, G-07319, G-08079, G-08328, G-08387, G-11241, G-28030, K-06677, K-28466, M-23145 SEWAGE B-30117, C-30635 SILICATES C-06045, G-06680 SILICON COMPOUNDS C-06045, F-06648, F-09764, G-06680 SILICON DIOXIDE C-09333, K-06677 SILICOSIS G-08387, G-27085, G-32608 SILVER COMPOUNDS A-06351, C-33042, D-04986, D-20790, F-22567, G-11241 SINGLE CHAMBER INCINERATORS F-09764 SKIN G-07234, G-11241, G-18036, G-23012 SKIN CANCER F-09764 SLUDGE C-30635 SMOG A-30292, D-12065, F-09764, G-31705, H-17710 SMOKEMETERS C-26275, C-32534 SMOKES A-29787, F-09764, G-11241, H-25826 SMOKING F-09764, G-13625 SNOW C-33042 SOAP MANUFACTURING C-09751 SOCIAL ATTITUDES E-28465, G-19190 SOCIO-ECONOMIC FACTORS A-33058, A-34827, K-34664, M-23145 SODIUM CHLORIDE A-08489, F-06648 SODIUM COMPOUNDS A-08489, A-33004, B-30117, C-09333, D-04986, D-20790, F-06648, F-22567, G-06617, G-06680, G-11241, G-31629 SODIUM HYDROXIDE B-30117, F-06648, G-06680 SODIUM SULFITE G-31629 SOILS A-29787, A-33058, A-34754, D-30511, D-31371, E-26697, H-28849 SOLAR RADIATION A-23561, E-23809 SOLID WASTE DISPOSAL A-31548, B-30117, B-34795, F-09764 SOLIDS A-34424 SOLVENTS C-09333, G-08079, G-17470, G-27085, G-34621 SOOT D-26557, K-28466 SOOT FALL D-26557 S02 REMOVAL (COMBUSTION PRODUCTS) B-06883 SPACECRAFT ATMOSPHERES C-05191, C-09751, G-11241 SPARK IGNITION ENGINES F-09764 SPECTROMETRY A-06351, C-05191, C-06045, C-09751, C-25431, C-26275, C-29480, C-30510, C-30635, C-32476, C-32534, C-32718, C-33042, C-34388, C-34432, C-34641, D-07649, D-20790, D-29490, D-31112, G-05470, G-08079 SPECTROPHOTOMETRY A-33058, A-33641, C-05191, C-05977, C-06045, C-07567, C-09333, C-09751, C-10392, C-19506, C-27389, C-28126, C-28505, C-30510, C-31862, C-33277, C-33338, C-34388, C-34808, C-34939, D-07649, D-32912, F-15266, G-06239, G-09056, G-27387, G-28013 SPORES F-09764 SPOT TESTS C-05977, C-07772 STABILITY (ATMOSPHERIC) K-34664 STACK GASES A-29787, B-32461, D-29490, D-32912, H-33046 STANDARDS A-08489, A-29643, A-34827, B-30117, C-34815, D-30511, G-05945, G-06680, G-07337, G-11241, G-31280, K-05940, K-06677, K-21133, K-28466, K-34100, K-34664, L-23116, L-23608, L-23610, L-24214, L-25288, M-23145 STATISTICAL ANALYSES A-14286, G-07234, G-07423, G-08746 STEAM PLANTS A-33004, B-29450, D-29490, K-34100 STEEL G-06680, H-23436, L-23608, L-24214 STILBENE F-09764 STIPPLING H-21691 STOMACH G-05945 STREETS D-04986, H-23436 STRONTIUM COMPOUNDS A-06351, C-09333, F-13197, G-31224 SUBLIMATION F-32072 SULFATES B-29328, B-29450, C-09369, D-04986, G-32218 SULFHYDRYL COMPOUNDS A-29643, F-13348, G-06617, G-09524, G-32936 SULFIDES A-12422, A-23561, A-29787, A-30457, A-34424, B-29328, B-30117, C-06045, C-09369, C-26275, C-28126, C-28450, C-32476, C-32534, C-34939, D-12065, D-31371, E-26697, F-06648, G-08079, G-11241, G-28846, H-17710, H-20158, H-21691, H-23696, K-05940, K-28466, L-12423 SULFITES B-29450 SULFUR COMPOUNDS A-12422, A-23561, A-29787, A-30457, A-34424, B-06837, B-29328, B-29450, B-30117, C-06045, C-09369, C-26275, C-28126, C-28450, C-32476, C-32534, C-32718, C-34939, D-04986, D-12065, D-31371, E-26697, F-06648, F-22567, G-06680, G-08079, G-11241, G-28846, G-32218, H-17710, H-19770, H-20158, H-21691, H-22952, H-23696, K-05940, K-28466, L-12423 SULFUR DIOXIDE A-12422, A-23561, A-29787, B-29450, C-05191, C-09333, C-09369, C-28126, C-28450, C-29343, C-32476, D-04986, D-31371, D-32912, E-23809, F-09764, G-06680, G-07423, G-11241, G-13625, G-31705, H-17710, H-20158, H-23696, H-25927, K-28466, K-34100, L-12423, L-23610, L-24214, L-25288, M-23145 SULFUR OXIDES A-12422, A-23561, A-29787, B-29450, C-05191, C-09333, C-09369, C-28126, C-28450, C-29343, C-32476, D-04986, D-26557, D-31371, D-32912, E-23809, F-09764, G-06680, G-07423, G-11241, G-13625, G-27801, G-31705, H-17710, H-20158, H-23696, H-25927, K-28466, K-34100, L-12423, L-23608, L-23610, L-24214, L-25288, M-23145 SULFUR OXIDES CONTROL B-06883, B-29450, D-32912 SULFUR TRIOXIDE C-09369, D-32912, F-09764, G-06680 ------- SUBJECT INDEX 59 SULFURIC ACID B-29328, B-29450, B-32461, C-09369, C-23771, C-30199, F-09764, 0-11241, H-25826, K-28466, K-34100 SURFACE COATINGS A-31313, C-09751 SURFACE PROPERTIES B-31390, G-06617 SUSPENDED PARTICULATES A-23561, A-29787, A-30292, C-05977, C-07772, C-09333, C-09587, C-23771, D-04986, D-12065, D-31371, F-09764, G-07234, G-07319, G-07330, G-08079, G-11241, G-31705, H-17710, H-25826, L-23116, L-23608, L-23610, L-24214 SWEDEN C-11626, C-30199, C-30510, G-09406, G-31624, G-33868, H-23436, H-34881 SYNERGISM G-10361, G-11241, G-27801, G-31280, G-31705 SYNTHETIC FIBERS A-08489 TAR H-25826 TEFLON C-09587, C-09751 TEMPERATURE A-08489, B-32461, B-34795, C-29480, C-30635, C-33886, F-06648, F-09764, F-32072, G-10361, G-31624 TEMPERATURE (ATMOSPHERIC) A-27081, D-06671, D-12065, E-23744, E-23809, E-26697, H-28849 TEMPERATURE SENSING INSTRUMENTS A-17624 TENSILE STRENGTH F-06648 TESTING FACILITIES C-09333, C-29770, G-07234, G-08092, G-08167, G-12653 TETRAETHYL LEAD B-31390, C-05977, D-07649, G-08079 TEXTILE MANUFACTURING A-08489, G-28030 TEXTILES A-08489, A-30292, G-33504, K-06677 THERMAL RADIATION B-32461 THERMOMETERS A-17624 THIN-LAYER CHROMATOGRAPHY G-08079 THRESHOLDS B-34795, D-31112, G-06239, G-06680, G-08079, G-2I113, G-34756, H-21691, K-05940 TIN F-06648 TIN COMPOUNDS A-06351, B-31390, C-29652, D-04986, D-27188, F-09764, G-17470, G-31280 TIP BURN H-21691 TIRES G-05737 TISSUES C-31171, C-33042, C-33338, G-08328, G-08746, G-09406, G-12653, G-29276, G-32546, G-34621 TITANIUM G-06680, K-06677 TITANIUM COMPOUNDS A-06351, B-29450, D-04986, D-27188, F-09764, G-06680 TOBACCO C-33042, K-06677 TOKYO D-32912, L-23610 TOLUENES C-09333, C-09751, F-09764, G-OS737, G-08079, G-11241, G-27317 TOPOGRAPHIC INTERACTIONS A-23561, D-31371, E-23809 TOXIC TOLERANCES A-34827, G-06680, G-07234, G-07319, G-08092, G-08746, G-11241, G-28846, G-32608, G-33504, H-21691, H-25826, H-33046, K-06677 TOXICITY A-12422, A-29643, A-34827, B-06884, C-33042, E-23744, E-28465, F-32072, G-05185, G-05737, G-05945, G-06172, G-06239, G-06617, G-07234, G-07319, G-07330, G-07337, G-08167, G-08746, G-11241, G-11556, G-13154, G-18128, G-21113, G-23012, G-27085, G-27317, G-27801, G-29255, G-29276, G-31224, G-31280, G-31543, G-31705, G-32218, G-32608, G-34682, G-34789, H-23696, H-27872, K-05940, K-07576, K-21133, K-34664 TRACE ANALYSIS A-33004, A-33058, A-34754, C-05977, C-07567, C-28338, C-28354, C-28450, C-29770, C-31171, C-32534, C-33042, C-33338, C-34388, D-07649, G-08328 TRANSMISSOMETERS C-32534 TRANSPORT A-23561, A-34424, E-26697, G-32936 TRANSPORTATION A-23561, A-31313, C-05191, D-04986, D-26557, D-27188, D-32912, E-23744, E-28465, F-09764, G-11241, K-34100, L-23608, L-23610, L-24214, L-25288 TRAPPING (SAMPLING) C-32476, C-32718, D-31112, G-08079 TREATMENT AND AIDS B-28918, C-15451, C-32718, C-33042, C-34388, F-11570, G-05945, G-07330, G-08079, G-08328, G-08746, G-09406, G-11556, G-13154, G-17470, G-18036, G-18128, G-27085, G-28846, G-29255, G-30308, G-32608, G-34621, H-25826, H-33046, K-05940, L-29230 TREES D-32912, H-17710, H-21691 TUBERCULOSIS G-08387 TUMORS G-08328 TURBIDIMETRY C-28450, C-32534 u ULTRAVIOLET RADIATION F-09764 ULTRAVIOLET SPECTROMETRY C-05191, C-32534, D-31112, G-08079 UNITED STATES A-06351 URANIUM COMPOUNDS A-06351, C-09333, F-15266, G-06680, G-08079, G-32608, K-06677 URBAN AREAS A-29787, A-30292, B-06883, B-06884, C-07284, C-07567, D-04986, D-20790, D-26557, D-27188, D-31371, D-32912, F-09764, G-08387, G-13625, G-27085, H-23436, K-06677, K-07576, L-23608, L-23610, L-24214 URINALYSIS A-31313, B-28918, C-05977, C-09333, C-10392, C-29652, C-31171, C-31862, C-33338, C-34641, G-06172, G-06176, G-06680, G-07234, G-07319, G-07330, G-07337, G-08079, G-08746, G-09396, G-09397, G-13154, G-23012, G-27387, G-28013, G-28030, G-30308, G-33868, G-34621 USSR A-06909, A-08489, A-14286, A-17624, B-06883, B-06884, B-31390, C-07284, C-07567, C-08134, C-20944, C-28450, C-34939, D-06671, F-06648, F-10866, G-05185, G-05945, G-08167, G-08387, G-09524, G-10361, G-29255, K-05940, K-06677, K-07576, K-21133, K-28466 V VANADIUM F-09764, G-06680, G-08079 VANADIUM COMPOUNDS A-06351, A-12422, D-04986, D-20790, D-27188, G-06680, G-08079, G-32608, K-06677, L-12423 VAPOR PRESSURE C-07284, E-26697, F-06648, F-32072, G-07330, H-23696, H-28849 VAPORS A-08489, A-17624, B-06883, B-06884, B-31390, C-05977, C-07284, C-07567, C-07772, C-09333, C-10392, C-15451, C-20944, C-28214, C-28583, C-31862, C-33886, C-34815, D-12065, D-29490, D-29545, D-30511, F-14712, G-05470, G-05945, G-07234, G-08079, G-08092, G-08167, G-08746, G-09056, G-09396, G-09397, G-09524, G-18036, G-18128, G-18247, G-21113, G-28846, H-22952, H-25826, H-28849, K-05940, K-07576, K-21133 VEGETABLES A-34754, G-32936, H-21691, H-24773 VEHICLES A-23561, A-31313, D-26557, D-27188, D-32912, F-09764, G-11241, K-34100, L-23608, L-23610, L-24214, L-25288 VENTILATION B-06883, B-06884, B-28918, D-29545, G-07319, G-07337, G-08079, G-34756 VENTURI SCRUBBERS B-29328 VIRUSES C-34388, G-11241 VISIBILITY D-26557 VOLATILITY B-06884, C-07284, C-30635, E-26697, G-08746, G-31624 VOLCANOES A-33641 W WATER C-09751, C-29652, C-33277, C-34641, F-06648, G-11241, H-19770 WATER POLLUTION A-31548, A-34827, C-29343, C-30635, C-33042, D-26557, D-31371, E-23744, E-23809, E-26697, E-28465, G-23012, G-28030, G-31705, H-29147, H-33046, H-34881, L-23116, L-23608, L-23610, L-24214 WEATHER MODIFICATION E-23744, E-23809 WEST AND GAEKE METHOD C-32476 WEST VIRGINIA D-04986 WHEAT H-17710, H-20158 WINDS A-29787, A-30292, D-06671, D-12065, D-31371, K-34664 WOOD K-06677 X X-RAYS C-32534, G-05470, G-26740 XYLENES C-09751, F-09764, G-11241 YOKOHAMA D-32912, G-07423 ZINC A-29787, B-29328, C-06045, F-06648, F-09764, G-06680, G-08328, G-13446, K-06677 ZINC COMPOUNDS A-06351, A-29787, B-32461, C-09333, C-28126, C-28354, C-28505, C-30635, C-32476, C-32718, D-04986, D-20790, D-27188, F-13197. G-06680, G-11241, G-31224, G-32218, K-06677 ZIRCONIUM G-13446, K-06677 U. B. GOVERNMENT PRINTING OFFICE. IB72 746763/4117 ------- |