APTD-1507
   NATIONAL INVENTORY
               OF SOURCES
           AND EMISSIONS:
            ARSENIC - 1968
U.S. ENVIRONMENTAL PROTECTION AGENCY
    Office of Air and Water Programs
Office of Air Quality Planning and Standards
esearch Triangle Park, North Carolina 27711

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                                    APTD-1507

  NATIONAL INVENTORY

                OF

SOURCES AND EMISSIONS:

       ARSENIC • 1968


                by
         W. E. Davis § Associates
           9726 Sagamore Road
            Leawood, Kansas
         Contract No. CPA-70-128
     EPA Project Officer:  C. V. Spongier
             Prepared for

       ENVIRONMENTAL PROTECTION AGENCY
       Office of Air and Water Programs
   Office of Air Quality Planning and Standards
      Research Triangle Park, N.C. 27711

              May 1971

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The APTD (Air Pollution Technical Data) series of reports is issued by
the Office of Air Quality Planning and Standards, Office of Air and
Water Programs, Environmental Protection Agency, to report technical
data of interest to a limited number of readers.  Copies of APTD reports
are available free of charge to Federal employees, current contractors
and grantees, and non-profit organizations - as supplies permit - from
the Air Pollution Technical Information Center, Environmental Protection
Agency, Research Triangle Park, North Carolina 27711 or may be obtained,
for a nominal cost, from the National Technical Information Service,
5285 Port Royal Road, Springfield, Virginia 22151.
This report was furnished to the Environmental Protection Agency
in fulfillment of Contract No. CPA-70-128.  The contents of this report
are reproduced herein as received from the contractor.  The opinions,
findings, and conclusions expressed are those of the author and not
necessarily those of the Environmental Protection Agency.  The report
contains some information such as estimates of emission factors and
emission inventories which by no means are representative of a high
degree of accuracy.  References to this report should acknowledge the
fact that these values are estimates only.
                       Publication No. APTD-1507
                                   11

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                       PREFACE







This report was prepared by W.  E.  Davis & Associates




pursuant to Contract No. CPA 70-128 with the Environmental




Protection Agency, Air Pollution Control Office.







The inventory of atmospheric emissions has been prepared to




provide reliable information regarding the nature, magnitude,




and extent of the emissions of arsenic in the United States for




the year 1968.







Background information concerning  the basic characteristics




of the arsenic industry has been  assembled and included.  Pro-




cess descriptions  are given, but they are brief, and are limited




to the areas that are closely related to existing or potential




atmospheric emissions of the pollutant.







Due to the limitation of time and funds  allotted for the study,




the plan was to personally  contact about twenty to thirty percent




of the companies in each major emission source group to obtain




the desired information.  It was  known that published data con-




cerning emissions of the pollutant was  virtually nonexistent,




and numerous contacts with industry during the study ascer-




tained that atmospheric emissions were not a matter of record.
                            111

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The arsenic emissions and emission factors presented herein




are based on the summation of information obtained from the




one processing company that produced arsenic during 1968,  the




copper, lead, and zinc smelters,  and the reprocessing com-




panies that handle about  fifty percent of the arsenic consumed




in the United States.  Arsenic emissions and emission factors




are considered to be reasonably accurate.
                                 IV

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                 ACKNOWLEDGEMENTS







This was an industry oriented study and the authors express




their appreciation to the many companies and individuals that




contributed information related to the atmospheric emissions




of arsenic.







We  wish to express  our gratitude for the assistance of the




various societies and associations,  and to the many branches




of the Federal and State Governments.







Our express thanks  to Mr. C. V. Spangler, Project Officer,




Environmental Protection Agency,  Air Pollution Control




Office,  for his helpful guidance.

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                      CONTENTS
SUMMARY
      Emissions by Source	       2
      Emissions by Region	       3
      Map of Emission Regions   	       4
      Emission Factors	       5
SOURCES OF ARSENIC	       6

MATERIAL FLOW

      Material Flow Chart	       8
      Mining and Processing	       9
      Arsenic Imports	      10
      Consumptive Uses	      11
           Agricultural	      11
           Glass Manufacture	      13
           Wood  Preservatives	      13
           Nonferrous Alloys	      13
           Other	      14

EMISSIONS

      Mining and Processing	      16
      Metallurgical Processing	      17
      Reprocessing	      27
           Agricultural	      27
           Glass Manufacture	      29
           Wood  Preservatives	      32
           Nonferrous Alloys	      33
           Other	      35
      Consumptive Uses	      37
           Agricultural	      37
           Coal	      41
           Oil	,	      43
           Detergents	      44
           Phosphoric Acid	      44
                               Vil

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      Incineration and Other Disposal	      47
           Sewage and Sludge	      47
           Iron and Steel	      48
APPENDIX  A
      Companies Dealing in Arsenic and
        Arsenic Compounds	      50
TABLES

Table I
      Arsenic Contamination in a Western
        Mining Community	      23
Table II
      Concentration of Arsenic Near a Copper Mine
        in Northern Chile	      24
Table III
      Suspended Particulate and Arsenic Concentra-
        tions in the Air near Cotton Gins in
        West Texas	      39
Table IV
      Average Arsenic Content of Coal Ash	      42
Table V
      Concentrations of Arsenic in Certain
        Detergents and Presoaks	      4.6
                            Vlll

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                           -1-
                       SUMMARY







The production and use of arsenic in the United States has been




traced and charted for the year 1968.  The total consumption




of 28, 000 tons was used as follows:  72 percent by imports




(20, 000 tons), and 28 percent by domestic producers (8, 000 tons).







During the year emissions from metallurgical processing plants




of the primary producers of copper, lead,  and zinc were 4,466




tons,  and those due to the use of pesticides were 3, 270 tons.




These two emission sources  combined account for 82 percent




of the 9,415 tons total emissions.







Arsenic emissions to the atmosphere can be  reduced.  A decrease




in imports,  coupled with an increase  in domestic production.,




would result in less emissions.  Many nonferrous smelters cur-




rently process  ores that contain significant quantities  of arsenic.




With a sufficient economic incentive, some would recover the




element rather than treating  it as an unwanted by-product.







Emission estimates for processing and reprocessing ope.-atic.ns




are considered to be reasonably accurate.  They are based on




estimates obtained through personal contact with the processing




and reprocessing cpmpanies, and on engineering calculations sup-




ported »y data covering smelter gas flow rates and temperatures.

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                           -2-
Source Category

Mining

Metallurgical
  Processing
                EMISSIONS BY  SOURCE
                          1968
 Source Group
Reprocessing
Consumptive Uses
Incineration and
  Other Disposal
Copper Smelters

Zinc Smelters

Lead Smelters


Agricultural

Glass

Wood Preservatives

Nonferrous Alloys

Other


Agricultural

Coal.

Oil



Cast Iron
              TOTAL,


N   - Negligible (less than 1 ton)

NA - Not Available
  Short Tons
2,700

1,390

  376


  196

  638

    N

    N

    3


3,270

  743

  NA



   97
                                    4,466
  837
4,013
   97
                                    9,415

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                          -3-
Region No. 1




Region No. 2




Region No. 3




Region No. 4




Undistributed
EMISSIONS BY REGION







  Number of Smelters




          22




           4




           8




           2
Short Tons





   3,829




   1,317




   2,313




   1,020




     936
              TOTAL
                                  9,415

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                                   MAP  OF EMISSION  REGIONS
PLANT LOCATIONS
   + Arsenic
    • Copper
    O Lead
   <>- Zinc

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                           -5-
                   EMISSION FACTORS
Mining


Metallurgical Processing

      Copper Smelters

      Zinc Smelters

      Lead Smelters


Reprocessing

      Agricultural

      Glass

      Other


Consumptive Uses

      Agricultural

      Cotton Gin

      Burning Cotton
        Gin Trash

      Coal
Incineration and Other
  Disposal

      Cast Iron
0. 2 Ib/ton of arsenic in ore
4. 9 Ib/ton of copper

1. 3 Ib/ton of zinc

0.8 Ib/ton of lead
 20 Ib/ton of arsenic used

232 Ib/ton of arsenic used

  3 Ib/ton of arsenic used
336. 0 Ib/ton of arsenic used

  3. 5 lb/1, 000 bales of cotton ginned


 17. 0 lb/1, 000 bales of cotton gir.ned

  2. 9 lb/1, 000 tons of coal burned
11 lb/1, 000 tons of metal charged

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                           -6-
                 SOURCES  OF ARSENIC







Arsenic is not an abundant .element, but it is widely distributed




in the earth's crust.  Traces of it can be found almost every-




where.  It is present in sea water, in coal deposits,  and in vir-




gin soils as well as in various ores.  The most extensive occur-




ence is with copper, lead, cobalt, nickel, iron,  gold, and silver.







Arsenic is generally regarded as a contaminant in the ore and




must be removed during smelting and refining in order to im-




prove the quality of the metal. During 1968 it was produced com-




mercially only at one location in the United States.  At many




other locations it was an unwanted by-product.  One  of the prob-




lems facing the mining industry has been the disposal of  large




quantities of crude arsenic produced while purifying  other metals.







In the United States arsenic occurs in many ores of ferrous




metals and nonferrous base metals.  Gold and silver ores are




often associated with arsenic and contain large reserves  of ar-




senic  /.   Copper ores in Arizona usually  contain a small amount




of arsenic, while ores in  many other western states  contain con-




siderably more.  Often lead,  copper, and gold ores contair. as
1- Mineral Facts and Problems; U. S. Bureau of Mines;  1965.

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                           -7-
much as 2 or 3 percent arsenic and in a few instances, as much




as 10 or 12 percent.







Copper, lead, and zinc ores and concentrates which are im-




ported and processed in the United States also contain arsenic.

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                                     ARSENIC

                           MATERIAL, FLOW CHART  -  1968

                              Short Tons - Arsenic (As)
       SOURCES
         8, OOP
PRODUCER SHIPMENTS
        20.000
                              28,000
       IMPORTS
         USES
                                                     19.500
                                                AGRICULTURAL
                                                      5. 500
                                             GLASS MANUFACTURE
         4.00
                                            WOOD PRESERVATIVES
                                                      400
NONFERROUS ALLOYS
                                                     2.200
                                                MISCELLANEOUS
                                                                                                  QO
                                                                                                   I
                                                                                 CONSUMER
                                      Figure  II

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                           -9-




                 MATERIAL  FLOW




               MINING  AND PROCESSING





During 1968 arsenic was produced commercially in the United



States only at the American Smelting and Refining Company



copper smelter in Tacoma,  Washington _/.  It was produced as



a by-product of copper smelting not only from  copper ores and



concentrates, but also from speiss, flue dust,  and sludges re-



ceived from other smelting plants.





Arsenic produced domestically and shipped from producer stocks



daring 1968 totaled about 8,000 tons (As content)  _/.   It was



produced as arsenic trioxide or arsenious  oxide (As,O.), which
                                                 ^  3


is often referred to as white arsenic.
1- Minerals Yearbook;  Bureau of Mines;  1968.



2- An estimate based on information in the Bureau of Mines

   Minerals Yearbooks,  1958 through  1968.

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                           -10-
                  ARSENIC IMPORTS







During 1968 arsenic  imports totaled 20, 000 tons (As content),




consisting principally of white arsenic and metallic arsenic  /.




About 37 percent of the  white arsenic was imported from




Sweden,  29 percent from Mexico, and 25 percent from France.




Sweden was  the major supplier of metallic arsenic.
1- Minerals Yearbook;  Bureau of Mines;  1968.

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                           -11-
                  CONSUMPTIVE USES


The apparent consumption of arsenic in the United States during

1968 has been estimated at Z8, 000 tons (As content) *J.


Arsenic is produced principally in the oxide form (white arsenic)

and used extensively in the manufacture of calcium arsenate and

lead arsenate;  smaller quantities are also  used in sodium arsen-

ite, sodium arsenate,  arsenic acid, and other compounds. Ar-

senic is used primarily for its toxic effect on plants and insects.

It is used to a lesser extent in glassmaking, nonferrous alloys,

wood preservatives, and for numerous miscellaneous purposes.


AGRICULTURAL

During recent years about 70 to 80 percent  of the arsenic  con-

sumed in the United States has been used in the manufacture of

pesticides, including herbicides,  defoliants, fungicides, and in-

secticides.  Various forms of arsenic used in these materials

include:  calcium and lead arsenate, calcium and zinc arsenite,

arsenic acid, cacodylic acid, and arsenic trioxide (white ar-

senic).
1- Estimated tonnage is based on imports reported in the
   Bureau of Mines Minerals Yearbook,  1968, plus estimated
   producer shipments.

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                           -12-
Herbicides are used principally to control weed growth.  Cal-

cium,  sodium and zinc arsenites, plus some organic arsenicals,

are used for this purpose and are usually applied in the form of

a water solution.


The major use of defoliants and desiccants in the United States

is for treatment of cotton prior to machine picking.  The prod-

uct most used for this purpose is arsenic acid. Another defoli-

ant is cacodylic acid,  but due to higher cost it is  consumed in

smaller quantities.


Another important area for use of arsenic is in insecticides.

The most common arsenate products used for  this purpose are

calcium and lead arsenate.   These may be used either as sprays

or dusting materials which are applied to orchards, gardens,

berries,  ornamentals,  and field crops in a form that will not in-

jure plants, but chewing insects are destroyed when they eat

leaves which have been treated with the arsenic-containing

sprays or dusting preparations.


It is estimated that 19, 500 tons of arsenic were used for agri-

cultural purposes in the United States during 1968  /.
1- Private communication with the U. S.  Bureau of Mines,
   Washington, D.  C.

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                           -13-
GLASS  MANUFACTURE

Arsenic trioxide (As^O-),  arsenic hemiselenide (As^Se),  ar-

senic pentoxide (As2O_),  and arsenic trisulfide (As^S ) are

used in  the manufacture of glass.


Approximately 5, 500 tons of arsenic were used in the manufac-

ture of glass during 1968  _/.


WOOD PRESERVATIVES

Various arsenic compounds are used extensively as wood pre-

servatives either alone, or mixed with other substances.  Such

compounds include  arsenic trioxide, chemonite, ammoniacal

copper arsenite, and chromated copper arsenate.


Arsenic used in wood preservatives in the United States  during

1968 totaled approximately 400 tons _/.


NONFERROUS ALLOYS

Arsenic in small, amounts is added to some  copper and lead al-

loys to improve corrosion a.nd erosion resistance,  raise the

annealing temperature, change the surface tension, harden the
1- Private communication with the U.  S. Bureau of Mines,
   Washington, D. C.

2- Minerals Yearbook;  Bureau of Mines;  1968.

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                            -14-
alloy,  or otherwise alter the characteristics of the metal to

make it suitable for certain special purposes.


It is estimated that 400 tons of arsenic were used in nonferrous

alloys in the United States during 1968 _V.


OTHER

Small quantities of arsenic are used in cattle and sheep dips,

pyrotechnics, pigments,  semiconductors, poultry feed additives,

Pharmaceuticals,  and in treating hides and  skins.


Sodium arsenite is the active ingredient in certain cattle and

sheep  dips.  It is also used to a  limited extent  for termite control.


Arsenic disulfide and arsenic  trisulfide are found in nature but

ordinarily are made  artificially.  They are  used in paint pig-

ments and pyrotechnics.  Arsenic disulfide  is also used as a de-

pilatory in tanning.   Arsenic pentasulfide has a limited use in

paint pigments and pyrotechnics.


There is limited demand  for arsenic of extremely high purity

(99.999%) for use as a semiconductor.
1- Private communication with the U.  S.  Bureau of Mir.es,
   Washington,  D.  C.

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                           -15-
In the past arsenic compounds have been used rather extensively




in medicine,  but today the applications are limited.   Less than




one percent of the annual arsenic supply is used in pharmaceuti-




cal  preparations.







During 1968 the estimated uses of arsenic in this category totaled




2, 200 tons.

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                           -16-






                     EMISSIONS






               MINING  AND PROCESSING







Since no ore in the United States is mined solely for the recovery




of arsenic, the emissions to the atmosphere  resulting from min™




ing  operations are those  that occur during the mining and concen-




tration of copper, lead, and other ores that contain arsenic.







Regardless of the type of mine (underground or open-pit),  the




mining operations are basically the same:  ore removal, ore hand-




ling,  crushing, grinding, and concentration.   During many of the




operations the ore is wet and emissions to the atmosphere are




virtually nonexistent.  The principal emission appears to be that




due to wind loss from tailings.







Arsenic emissions to the atmosphere from sources of mining are




estimated at 0.2 pounds per ton of arsenic handled.   This  gives a




total figure of approximately 2 tons of arsenic emitted to the at-




mosphere during 1968.

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                           -17-
             METALLURGICAL PROCESSING







During 1968 arsenic for the commercial market was produced




at only one location in the United States.  It was recovered as




arsenic trioxide from dusts and residues as well as from for-




eign and domestic copper ores and concentrates.







Since most of the arsenic produced is in the form of arsenic tri-




oxide (As-O,) as a by-product of the smelting of other metals,




the production of arsenic is closely  associated with the recovery




and treatment of arsenic-bearing flue dusts.  As arsenic trioxide




is volatilized during the smelting of copper,  lead,  zinc,  and other




metals, it is concentrated in the flue dust.  The crude flue dust




carrying up to 30 percent arsenic trioxide also  contains oxides




of copper or lead, and perhaps other metals such as antimony,




zinc, and cadmium.







The crude flue dust recovered during the smelting operation is




further refined by mixing it with a small quantity of pyrite  or




galena concentrate prior to roasting.  The pyrite or galena pre-




vents the formation of arsenites during roasting, and produces




a clinkered  residue suitable for return to the process for recov-




ery of other metals.  The gases from roasting are passed




through a series of brick chambers  or kitchens, in which the

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                           -18-
temperature varies from 430 F in the first,  to 210 F or less in

the last.  As the gases  cool, arsenic trioxide condenses as a

crude white arsenic,  90 to 95 percent pure.  Much of the product

is used in this form without further refinement.


If higher purity  is required,  the refining is usually carried out

in a reverberatory furnace at a roasting temperature of about

1, 000 F.  The vapors first pass through a settling chamber  and

then through a series of kitchens.  In the settling chamber,  the

temperature is maintained above the condensation temperature

of the trioxide.  In the kitchens near the furnace a black, amor-

phous mass is condensed which contains about 95 percent arsenic

trioxide.  This product is reprocessed.  The bulk of the trioxide

is condensed in  the other kitchens at temperatures ranging from

250 to 360 F, and  most of the dust which exits from the kitchens

is caught in a baghouse.  Some  of the arsenic escapes; all that

is in the vapor phase, plus a relatively small amount of the  dust.


A flowsheet (Figure III) shows the basic steps for production of

arsenic trioxide'at a  copper  smelter  /.
1- Kirk, R. E.  and Othmer, D. F. ;  Encyclopedia of Chemical
   Technology;  2nd Ed. ;  Inter science Publishers;  New York,
   N. Y.;  1963.

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                              -19-
                   ARSENIC FLOW SHEET
                      COPPER SMELTER
 ROASTER
if
iTORY



CONVERTER



       Dust-laden
     vapor & gases
                             Low
                            arsenic
                              and
                            valuable
                            residue
       EXPANSION
        CHAMBER
      WASTE  HEAT
         BOILER
       BAGHOUSE
       COTTRELL
     PRECIPITATOR
Fumes
  and
 dust
                                       ROASTER
 High
arsenic
 fumes
                                                           Valuable
                                                           residue
                                  REVERBERATORY
          SO2
[to be conveited to
     and waste gases
         to stark
           White arsenic
            for market
                         Figure  III

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                           -20-
One of the big problems facing the mining industry has been the




disposal of large quantities of arsenic contained in various ores




mined and processed.   The quantity of arsenic available has




greatly exceeded the demand;  therefore, most smelters have not




attempted to produce arsenic for the commercial market.  There




is no  economic incentive to remove it from the flue gas.







At many smelters no attempt is made to controlarsenic emis-




sions, but at others some method of control is required.  If the




arsenic content of the ore is low,  as it is in copper ores in Ari-




zona, likely there will be no control.  The arsenic retained in




the copper product will be within commercial limits and that dis-




charged in the slag and to the atmosphere will be relatively minor.







If the arsenic content of the ore is high, some method of control




is essential.  In some instances the flue dust containing high con-




centrations  of arsenic is removed from the smelting process  at




regular intervals to prevent excessive arsenic build-up in the




system and  in the product.  Sometimes the flue dust is  sold to a




smelter that produces arsenic, and sometimes it is dumped.







The following six examples demonstrate arsenic problems in




mining ore.

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                           -21-
1 - The Boliden Mining Company in Sweden is one of the world's




largest producers of arsenic.  Arsenical gold ore containing 10




percent or more of arsenic is processed; the arsenic output is




sufficient to supply a large share of the world demand. At the be-




ginning of the Boliden operation it was realized that the arsenic




output would be far in excess of demand and that  disposal would




be a major problem.  First the excess crude arsenic was mixed




with cement,  made into blocks, and dumped far out at sea.  This




method of disposal proved to be rather expensive and an alter-




nate method was devised.  A large concrete storehouse was




erected in  1931 and the crude arsenic was stored close at hand.




Since that time additional storehouses have been  constructed as




required.







2 - At other locations the lack  of adequate control has resulted




in harmful emissions  to the atmosphere.  During the years




1903 to 1905 large quantities of arsenic were emitted from a




copper smelter in Montana.  The emission rate was reported




as 59,270 Ib/day when the ore  processed was 10, 000 tons/day.




Large numbers of animals were killed up to fifteen miles from




the smelter due to eating  plants contaminated with arsenic

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                           -22-
trioxide  1>2>3/.


3 - In Nevada a gold smelter was reopened in 1962,  but within

five months it became apparent that the electrostatic precipita-

te r equipment was inadequate.  Large quantities of arsenic tri-

oxide escaped into the atmosphere.  If the dust-collecting system

had operated at 90 percent efficiency as intended,  about 15,000

tons of crude arsenic trioxide would have been collected each

year.  The analysis of dust samples from the area near the plant

are shown in Table I.


4 - After an air pollution episode at a copper mine in northern

Chile,  samples of ore and  dust were analyzed and reported as

shown in Table II.


5 - According to a report concerning another copper smelter in

South America, the arsenic in the ore is recovered  as crude ar-

senic trioxide and dumped  in the open on company property near
1- Harkins, W. D.   and Swain,  R.  E. ;  "The Determination of
   Arsenic and Other Solids in Smelter Smoke";  J.  Am.  Chem.
   Soc.;  29; p. 9.7.0;  1907.

2- Harkins, W. D.   and Swain,  R.  E. ;  "The Chronic Arsenical
   Poisoning of Herbivorous Animals";  J. Am. Chem. Soc. ;
   3£;  p.  928;  1908.

3- Hay wood,  J. K.;  "Injury to Vegetation and Animal Life by
   Smelter Fumes"; J. Am. Chem. Soc.; 29; p. 998;  19^07.

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                          -23-
                       TABLE  I

             ARSENIC CONTAMINATION IN
          A WESTERN MINING COMMUNITY
 Sample
      Site
   Arsenic
Concentratior
Flue Dust

Roof Dust

Dust

Dust

Dust
Base of stack

Shed near office

Area near drying mill

Roaster area

Sulfide-ore feed
   44. 0%

    4.4%

    2.7%

    3. 1%

    1.23%
1- Birmingham,  D. J.,  Key, M. M.,  Holaday,  D.  A., and
   Perone, V. B. ;  "An Outbreak of Arsenical Dermatosis in
   a Mining Community";  Arch. Dermatol.; 91; p. 457;  1965.

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                          -24-
                        TABLE  H

             CONCENTRATION OF ARSENIC
   NEAR A  COPPER MINE IN NORTHERN CHILE  */
                                                Arsenic
             "                               Concentration
Mineral (ore)                                    0.054%

Concentrated Ore                                1.64%

Calcined Ore                                    0. 30%

Dust from Electrostatic Precipitator             10.36%

Dust from Stack                                16. 64%
1- Oyanguren, H.  and Parez, E. ;  "Poisoning of Industrial
   Origin in a Community";  Arch. Environ. Health; 13;
   p.  185;  1966.

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                           -25-
the smelter.   Based on material balance data and stack sample

analyses, the arsenic emission to the atmosphere is slightly

more than 8 percent.  The concentrates contain 12 to 13 percent

copper and 2. 7 percent arsenic.  The flue dust in the stack aver-

ages about 25 percent arsenic _/.


6 - One zinc  smelter in the United States  reported the average

arsenic content of zinc concentrates as approximately 0. 075 per-

cent.  The estimated arsenic output from the  smelter is as follows.


               ARSENIC  OUTPUT FROM A
        ZINC  SMELTER  IN THE  UNITED STATES


           Output                            Percent


   In Products                                   0. 3

   In Saleable Residues                          17. 6

   In Dust                                       1.5

   To the Atmosphere                            80. 6

               TOTAL                          100.0



Arsenic emissions from copper, lead, and zinc smelters vary

considerably from plant to plant and from  year to year.  Ar-

senic emission factors for copper smelters range from one
1- Private communication;  industrial source.

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                           -26-
pound to 53 pounds per ton of copper, and the average for  1968




was 4. 9.  The average emission factor for zinc smelters was




1. 3 pounds per ton of zinc, and  for lead plants 0. 8 was the aver-




age.







Emissions from a few of the  processing plants that did not pro-




duce arsenic were far greater than those from the one plant that




did produce  for the commercial  market.  Undoubtedly,  more ar-




senic would  be produced and  less emitted to the atmosphere if




there were a greater  incentive for smelters to recover the ele-




ment.







During 1968 estimated arsenic emissions to the atmosphere due




to metallurgical processing of arsenic-bearing ores totaled




4,466 tons.   The emission estimates are based on material bal-




ance and stack sampling data obtained from industrial sources.

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                            -27-
                     REPROCESSING







During  1968 about 70 percent of the arsenic consumed in the




United States was used for agricultural purposes, and nearly




20 percent was used in glassmaking.  The remainir.g 10 per-




cent was used for various purposes including wood preserva-




tives, nonferrous alloys, animal dips, paints,  pyrotechnics,




poultry  feeds, and other products.







AGRICULTURAL




The principal use of white arsenic is  in the  manufacture of the




arsenical pesticides.  Some of the compounds are lip'.ed below.







        AGRICULTURAL PESTICIDE COMPOUNDS






   Sodium arsenate                 Cacodylic acid




   Lead ar senate                  Calcium a r sen.it e




   Calcium  a r senate                Zinc arser-.ite




   Zinc, a.rser-i.te                   Sodium arsenite




   Arsenic acid                    Di sodium mer.bl a.ir
All these compounds are produced from arsenic trio-vide ^r..d :Lv.e





m-iE.ufactu.ring process is relatively simple.  Arsenic, acid is




produced by reacting arsenic trioxide with nitric arid.  Ca!;.r.m




arser.ate is prodxi.ced by reacting arsenic acid with lime; If i.d

-------
                           -28-
arsenate by reacting a.rsenic acid with litharge (lead oxide).  Ar-




senic trioxide reacted with sodium hydroxide produces  sodiutn




arsenite.







Since the production of arsenic compounds is simple, many of the




manufacturers of pestidices commence their operation  with the




purchase of arsenic trioxide and other basic materials.  They pre-




pa.re the arsenic compounds,  then formulate and package the pesti-




cides.  Some of the manufacturers are large,  others are small,




and size seems  to be the most important factor govern.irie the gen-




eral type of equipment used to prepare the compounds and pesti-




cides.  When the operation is small, arsenic trioxide is usually




received .in casks or barrels a.nd unloaded by hand..  Reactions are




often carried out in closed vessels.  The principal problem from




the standpoint of atmospheric emissions  stems from dusting dv.r-




ing handling of the  materials.







Majiy of the large manufacturers are prepared to handle bulk ma-




terials.  At one location a.rsenic trioxide is received in railroad




cars and dumped directly below into a  receiving tank where it is




reacted with nitric acid to produce arsenic acid.







Reports from pesticide manufacturers indicate that  arsenic




losses a.re small.  None of the  reactions result in significant

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                           -29-
vapor emissions to the atmosphere and most of the dusting situa-

tions are usually handled by air pollution control systems  consist-

ing of hoods, ducts, exhaust fans, and baghouses.  The dusts

handled are in the  0. 5 to 10 micron range.


Manufacturers  state their material records indicate no detectable

losses of arsenic during processing;  however, it is evident  there

is a slight atmospheric  emission which is estimated at 20  pounds

per ton of arsenic  processed.


During  1968 arsenic emissions to the atmosphere due to the manu-

facture of pesticides totaled 196 tons.


GLASS MANUFACTURE

Arsenic is  used in nearly all types of glass.  It aids in the re-

moval of bubbles during manufacturing  and acts as a stabilizer

of selenium in decolorizing crystal glasses.


The proportion of arsenic used is very  small,  seldom as much as

10 pounds per ton of glass and usually not more than 2 pounds per

ton. In window glass the amount used generally ranges from 1/4

pound to 5 pounds per ton  /.
1- Tooley, F. V. ;  Handbook of Glass Manufacture;  Ogden Pub-
   lishing Company;  New York,  N.  Y.;  1953.

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                           -30-
Of the five major types of glass produced commercially,  soda-




lime glass is the most widely used.  It is well suited for window




glass, plate glass, containers,  electric light bulbs,  and many




other inexpensive articles.   It accounts for about 90 percent of




all glass production and is produced on a massive scale in large,




direct-fired, regenerative furnaces that operate continuously.







Glass furnaces are usually directly fired with oil or natural gas




and heat is reclaimed in checkerwork regenerators.  Raw ma-




terials are charged at one end of the furnace and  molten glass




is pulled from the other end.  Glass temperatures are as high




as 2, 700 F in the furnace, but usually near 2, 200 F  at the dis-




charge.







There are two principal sources of particulate matter  in the ex-




haust gases:  raw materials  entrained in combustion gases, and




materials from the melt. Particulates expelled from the furnace




are the result of many physical and chemical reactions that occu:




during melting.   The reactions are so complex that predictions




of losses  cannot be based on temperature and vapor  pressure




data alone.  One significant factor affecting  the quantity of par-




ticulates is the production rate.  As the production rate of the




furnace is increased, the particulates also increase in quantity.

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                           -31-
The people in the glass industry that were contacted during this

study provided general information concerning glassmaking,  the

use of arsenic, methods of operation, and the use of air pollu-

tion control equipment, but they could not provide specific data

regarding arsenic emissions to the atmosphere.  Stack tests

were not available showing the arsenic content of the exhaust

gases, and material balance records were not sufficiently accu-

rate concerning the minor constituents of the melt.


Particulate emissions average about 2 pounds per ton of glass

produced based on good operation _/ and the arsenic trioxide

content of the particulate has been reported as 7. 71 percent  /.

Based on the following, the emission factor for arsenic is 232

pounds per ton of arsenic used in  the manufacture of glass.
1- Duprey,  R.  L. ;   Compilation of Air Pollutant Emission
   Factors    Public Health Service Publication No.  999-AP-42;
   1968.

2-  Air Pollution Engineering Manual;   Public Health Service
   Publication  No.  999-AP-40;  Table 212;  1968.

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                           = 32-
                ARSENIC EMISSION  DATA
                 GLASS MANUFACTURE
   Particulate emission (Ib/ton of glass)             -     2

   Arsenic trioxide content of particulate (percent)   -  7.71

   Arsenic content of arsenic trioxide (percent)      -    76

   Arsenic used in glass (Ib/ton of glass)            -     1

   Total arsenic in glass (tons) 1968                - 5, 500



During  1968 arsenic emissions to the atmosphere resulting

from the manufacture of glass  totaled 638 tons.


WOOD  PRESERVATIVES

Wood preservatives that contain arsenic compounds have been

used during the past thirty or forty years for the treatment of

telephone poles, mine timbers, and other wood materials.

Wolman salts and  Osmosalts are wood preservatives that con-

tain about 25 percent sodium arsenate.  Bolidensalt BIS, a zinc-

chromium arsenate, contains 20  percent arsenic acid and 21 per-

cent sodium arsenate.  Bolidensalt BIS Copperized also contains

20 peicent aisen.ic acid and 21 percent sodium arsenate.  Bolid-

ensalt K33,  a nonionic copper-chromium arsenate,  contains 42

percent arsenic acid.


These compounds  are used in solution and arsenic emissions to

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                           -33-
the atmosphere that occur are principally those resulting from




handling the dry materials during the initial processing steps.




People in industry that were contacted regarding the manufacture




and use of wood preservatives stated that there are no detectable




emissions of arsenic during processing.







During 1968 arsenic emissions to the atmosphere resulting from




the manufacture of wood preservatives are  considered to be neg-




ligible.







NONFERROUS ALLOYS




Arsenic occurs naturally in many copper ores and may be per-




mitted to  remain after the refining process in concentrations of




about 0. 3 percent.  Sometimes the element is added intention-




ally in amounts up to 0. 5 percent and marketed under the name




of "arsenical copper".







One use of arsenical  copper is in building automobile radiators




and other copper units that are soldered together.   Since the an-




nealing temperature of the alloy  is higher than the soldering  tem-




perature, loss of strength is negligible.  Another use is  in heat




exchangers and condenser tubes.







Arsenic is also found in many lead ores and is used in small




amounts YLn certain lead alloys.   Small additions of arsenic will

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                           -34-
harden lead and change its surface tension.  Two of the best




known uses for arsenical lead are in the manufacture of bat-




teries and munitions.  One munitions manufacturer reports the




use of two types of antimonial arsenical lead;  type A containing




2 to 2-1/2 percent arsenic, and type B containing 1. 15 to 1.25




percent arsenic.  The two types are  melted together to obtain




the desired characteristics.  For use in batteries arsenic is




added principally to form hard lead which is used for battery




grids, posts,  and cable sheathing.







Arsenic is also used as an alloying material to produce arseni-




cal lead babbits.  This babbit is hard with a fine uniform struc-




ture that resists fatigue and is used in internal combustion, en-




gines where relatively high temperatures are encountered.







Arsenic may be added in small quantities to brass to prevent




dezincification and minimize season  cracking.







Alloying and melting operations cause some emissions, but man-




ufacturers claim there is no need for special air pollution con-




trol equipment.  According to the information obtained from in-




dustry,  arsenic emissions to the atmosphere are approximately




one pound per ton of arsenic processed.

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                           -35-
During 1968 atmospheric emissions due to the processing of




arsenic alloys wexe less than 1/4 ton, and are considered neg-




ligible.







OTHER




As stated elsewhere in this report sodium arsenate, arsenic di-




sulfide, arsenic trisulfide, and arsenic  pentasulfide are used in




paint pigments,  pyrotechnics,  cattle and sheep dips, pharmaceu-




ticals, poultry feed additives,  and other miscellaneous products.




A small amount of high-purity arsenic is used in semiconductors.







Some semiconductor compounds are formed by alloying arsenic




with aluminum,  gallium,  and indium.  Gallium arsenide is used




in the production of tunnel and  varactor  diodes, transistors,




solar cells, and experimental lasers. Indium arsenide also is




used to produce experimental lasers as  well as Hall-effect and




infrared devices.  "A minute amount of arsenic is used in some




germanium and silicon devices.  Some low-melting glasses con-




taining high-purity  arsenic are  useful in semiconductor and in-




frared applications.







Information obtained from industrial sources varies consider-




ably regarding arsenic emissions to the atmosphere;  however,




all agree that the principal emission is due to handling of dry

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                          -36-
arsenic compounds.  Average emissions are estimated at 3




pounds per ton of arsenic processed.







During 1968 arsenic used in reprocessing miscellaneous products




totaled 2,200 tons; atmospheric emissions were an estimated




3. 3 tons.

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                           -37-
                  CONSUMPTIVE  USES







Household and commercial products contain arsenic, even




though it is not purposely added in the manufacturing process.




Arsenic in detergents is one example;  another is arsenic in




coal.  It occurs naturally in  coal at an average concentration




about the  same as in the earth's crust.  It also occurs naturally




in the phosphates that are  used in the manufacture of detergents.







AGRICULTURAL




Insecticides,  fungicides, herbicides,  and desiccants are widely




used and are applied as sprays or dusts under many different




conditions by  aircraft and  ground  equipment.  All the factors




affecting the application have been discussed in the literature




at great length;  the droplet size,  the spray drift,  the fluid




properties,  the  meteorological factors,  the air movement,  tite




nozzle types,  the evaporation, and numerous other subjects.







There is a wealth of general information that has been published,




but virtually none that is specific  regarding the amount of spray




or dust that is not effective.   The pesticide industry as a whole




merely answers that there are too many factors involved.  A




few documents have been located which  contain some specific




data relating to  emissions  that occur during cotton ginning opera-




tions.

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                           -38-
The concentration of dust and arsenic observed near a cotton

gin in Texas has been reported as shown in Table III, and the

arsenic content of the particulate averages about 0. 03 percent.

Another study shows that the particulate discharged from gin-

ning operations is 11.7 pounds per bale of cotton ginned _/.

Published statistics show that the  production of cotton during

1968 was 10, 948, 000 bales (500 pounds per bale) *J.


     ARSENIC EMISSIONS FROM COTTON GINNING


   Cotton production 1968  (500 Ib. bales)         10,948,000

   Particulate discharge - Ib/bale of cotton
     ginned                                           11.7

   Arsenic content of particulate - percent              0.03



The particulate discharge was approximately 64, 000 tens, and

arsenic emissions were about 19 tons.


The burning of cotton gin trash is  also known to be a source of

arsenic emissions to the atmosphere. It has been reported that

the trash averages about 700 pounds per bale of cotton produced
1- Air-borne Particulate Emissions from Cotton Ginning Opera-
   tions;  U.  S.  Public Health Service;  Taft Engineering Center
   Technical Report A60-5;  I960.

2- Agricultural Statistics  - 1969;  U. S.  Dept.  of Agriculture.

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                                -39-
                            TABLE III

            SUSPENDED PARTICULATE  AND ARSENIC
          CONCENTRATIONS IN THE AIR NEAR  COTTON
                   GINS IN  WEST TEXAS -  1964
Range of
Distance Suspended
from Gin Particulate
(ft) Concentrations
(/ug/m3)
150 - 300a 5,000 - 76,000
1: 200 - l,400a 385 - 187
2,200 - 8: 000a 217 - 42
b 67 - 783
Range of Arsenic per
Arsenic /***§
Concentrations Participates
(yMg/m3) Ratio x 104
0.6 - 141 1.2 - 18.5
.07-0.08 3.7 - 2. 1
.10-0.01 4.6 - 2.4

             Average
0.0003
a - Measurement downwind from the gin

b ~ Measurement upwind from the gin
1- Control and Disposal of Cotton-ginning Wastes; A Symposium;  Public
   Health Service Publication 999-AP-31; May 3-4,  1966.

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                           -40-
and that about 37 percent of the trash is burned _/.   Another

report shows that arsenic lost from leaf trash during combus-

tion averages about 76. 6 percent  /.   Based on the assumption

that the arsenic content of the trash is the same as that of the

particulates emitted during  ginning, calculations show 425 tons

of arsenic in the trash burned,  and 326 tons  of arsenic emis-

sions to the atmosphere.
There are many sources of arsenic emissions due to the use of

pesticides other than those discussed above.  There are emis-

sions that occur during the application of sprays and dusts, the

incineration of pesticide containers, and evaporation.  In order

to estimate these emissions, the problem was discussed with

people knowledgeable with the application of pesticides. In

most instances they were reluctant to estimate losses; how-

ever, a few did express an opinion.  As a result, the atmos-

pheric emissions of arsenic due to the use of pesticides during

1968 have been estimated at 3,270 tons, including 19 tons from

cotton gins and 326 tons from burning cotton gin trash.
1- Control and Disposal of Cotton-ginning Wastes;  A Sympos-
   ium;  Public Health Service Publication 999-AP-31;
   May 3-4,  1966.

2-Aboul-Ela,  M.  M. and Miller, C. S. ;  "Studies of Arsenic
   Acid \Residues iii Cotton";  Texas Agricultural Experiment
   Station;  Texas A & M University; MP 771;  June,  1965.

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                           -41-
COAL

The arsenic content of various samples of coal has been reported

as shown in Table IV,  and the average concentration in domestic

coal is about 5.44 ppm.  Coal consumed in the  United States dur-

ing 1968 was 508, 990, 000 tons (bituminous and anthracite)  V;

therefore,  the arsenic in coal was about 2, 770  tons.


During combustion arsenic was discharged with the bottom ash

and the  fly ash.   With respect to fly ash, a study has been made

regarding emissions from coal fired power plants  and  the emis-

sions of arseni<: ha.ve been recorded.  Arsenic  concentrations in

fly ash samples taken from the stack (alter fly  ash collection)

ranged from 0. 11 to 1. 6 grains per  scf x 10"*   /.   Based on

508, 990, 000 tons of coal consumed, a.n arsenic concentration of

0. 64 grains per sc.f x. .10"^, and ]60 scf of  flue  ga.s per pound of

coal,  the a.rser.ir emissions i.r. the United States during 1968 due

to the combos:.!on of coal totaled 74.3 to.is.
1- Minerals Yearbook;  Bureaii of Mines:  1968.

2- Cuffe,  St'-iiJey T. a.j.d Gerstle, Rirha.rdW.;  "Emissions
   from Coil Fiired Power Plants":  Public Health Service
   Publication No. 999-AP-.35;  1967.

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                                -42-
                            TABLE  IV

            AVERAGE ARSENIC CONTENT OF COAL ASH
   Region
Frequency of   As Content   Ash Content   As Content
Detection - %   of Ash - %   of Coal - %   of Coal - %
Eastern Province
Interior Province
Western States
67
41
16
0.0107
0. 0049
0.0012
9.3
10.5
9.8
0.000995
0.000520
0.000118
          Average Arsenic Content in Coal
                                            0.000544
NOTES  -  The above table based on "Spectrochemical Analyses of Coal Ash
          for Trace Elements";  Table 1;  Bureau of Mines RI 7281;  July 1969.

          Averages were calculated for all samples tested using zero for
          arsenic contents below the limit of detection.

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                           -43-
OIL

During this study numerous oil analyses were obtained that re-

cord the metal content of various crude and residual oils.  Some

of this information was obtained during a literature search,  but

most of it was unpublished data furnished by major oil companies

and large users of residual oil.  The data obtained included analy-

ses of more than 400 samples of crude and residual oils from the

Middle East, South America,  and the  United States.  Most of the

analyses showed the percent of vanadium, nickel, and copper,

but not the arsenic content.  Only one group of 110 tests of domes-

tic crude oil included data concerning arsenic.


In 97 tests the arsenic was below the limit of detection, but in 13

tests the arsenic content ranged from 8 to 2, 380 ppb.  The aver-

age for the 110 tests was 42 ppb _/.


During 1968 the total new supply  of oil in the United States was

4, 922 million barrels _/;  about 79 percent was produced in the

United States.  Based on an average arsenic content of 42 ppb,
1- Uranium and Other Metals in Crude Oils;  Geological Survey
   Bulletin 1100;  U.  S.  Government Printing Office;  Washington,
   D. C.;  1961.

2- Crude Petroleum, Petroleum Products, and Natural Gas
   Liquids:  1968;  Mineral Industry Surveys;  Petroleum
   Statement; Annual.

-------
                           -44-
the arsenic in the oil was about 36 tons;  however, it is doubtful

that this data is sufficiently accurate for estimating emissions.

The arsenic content of imported residual oils is likely the most

important factor not included in the above figures.


DETERGENTS

Arsenic has been detected in several common presoaks and

household detergents that are marketed in the United States.

The concentrations in various types are tabulated in Table V.

It has been confirmed that the arsenic is not added intention-

ally;  it occurs naturally in the phosphates that  are used in the

manufacture of the detergents.


Atmospheric emissions of arsenic that may occur due to use

of detergents is considered as negligible.


PHOSPHORIC  ACID

The phosphoric acid used  for producing phosphates for  foods,

drugs,  and detergents is normally made by the thermal pro-

cess.  Although the raw acid may contain arsenic, lead, and

other heavy metals a very pure acid can be produced by treat-

ment with a sulfide to precipitate the metal ions  /.
 1- '"Atmospheric Emissions from Thermal-Process Phosphoric
   Acid Manufacture";  Public Health Service Publication No.
   AP-48;  1968.

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                           -45-
The phosphorus which is a basic raw material for the thermal




process is usually made by reducing phosphate ore in electric




furnaces.  Therefore, it is likely that there are  significant




atmospheric emissions of arsenic during the production of




phosphoric acid.  The data to determine the magnitude of the




emissions were not available during this  study.

-------
                           -46-
                         TABLE  V

             CONCENTRATIONS OF  ARSENIC
     IN CERTAIN/ DETERGENTS AND PRESOAKS   ll

A.
B.
C.
D.
E.
F.
G.
H.
Detergent
Type
EP
HDED
HDD
HDED
HDED
EP
DA
EP
Arsenic
Average
34
32
9
15
41
7
2
59
Concentration
(ppm)
Range
31-43
SD
8-10
SD
38-45
6-9
1-3*
51-73
'•'Lower limit of detection

NOTE:  Abbreviations are:
        EP    -  enzyme presoak
        HDED -  heavy duty enzyme detergent
        DA    -  detergent aid
        HDD   -  heavy duty detergent
        SD    -  single determination
1- Angino,  E.  E. ,  Magnuson,  L.  M. ,  Waugh,  T. C.,
   Galle, O. K. and Bredfeldt,  J. ;  "Arsenic in Detergents:
   Possible Danger and Pollution Hazard";  Science; 168;
   pp 389-390;  Apr.  17,  1970.

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                           -47-
         INCINERATION AND OTHER DISPOSAL


Nearly all the uses of arsenic are such that very little remains

for disposal.  After it is used in pesticides,  paint pigments,

pyrotechnics, and many other products, a small amount remains

in the shipping containers;  in many instances this arsenic is

disposed of by burning.  The emissions resulting from this source

have been included under Reprocessing and Consumptive  Uses,


SEWAGE AND SLUDGE

A recent report concerning the burning of sewage and sludge in-

dicates that the burning rate in the United States is about 2, 000

tons per  day, and  the mercury content ranges up to  30 ppm  /.

The arsenic content is not  stated.


Another  report published in 1970 shows the arsenic  concentra-

tion in the raw sewage input at a sewage treatment plant in

Kansas to range from 2 to  3.4 ppb  /.
1- Private communication from the Federal Water Pollution
   Control Authority.  (Investigations being conducted during
   1971;  therefore, data is subject to revision.)

2- Angino, E. E.,  Magnuson,  L.  M. , Waugh, T. C.,
   Galle,  O.  K.  and Bredfeldt,  J. ;  "Arsenic in Detergents:
   Possible Danger and Pollution Hazard";  Science; 168;
   pp 389-390; Apr.  17,  1970.

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                           -48-
The arsenic content of the sewage burned in the United States




was not available for  this study, but it is believed that some ar-




senic is present in most sewage and that the concentration in sew-




age burned (dry) is considerably higher than in raw sewage.  Ar-




senic emissions to the atmosphere due to the burning of sewage




may be in the order of Z to 10 tons per year.







IRON AND STEEL




During this study spectrographic analyses of dust samples from




foundries have  been examined; they all indicate arsenic and many




other elements are contained in the dust.  This information con-




firms that foundries,  and possibly steel  mills, are sources of




arsenic emissions to  the atmosphere.







The cupola is the most used method for producing cast iron.




The rate of particulate emissions  from gray iron cupolas has




been reported as  4 to 26 pounds per ton of process weight not




including emissions from handling, charging, or other non-




melting operations.







Based on the information obtained from industry  the particulate




emission factor is estimated at 22 pounds per ton of process




weight,  including melting and non-melting operations.  The

-------
                           -49-
arsenic content of the particulate is about 0.07'percent  /  and




the degree of emission control approximately 25 percent.
During 1968 the pig iron and scrap used by iron foundries totaled




16, 788, 000 short tons z/.   Arsenic emissions to the atmosphere




due to the production of cast iron were 97 tons.
1- Private communication with industrial source.




2- Minerals Yearbook;  Bureau of Mines;  1968.

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                           -50-


                      APPENDIX A

           COMPANIES DEALING IN ARSENIC
              AND  ARSENIC COMPOUNDS
CALIFORNIA
   Electronic Space Products, Inc.
LOCATION
Los Angeles
DISTRICT  OF COLUMBIA
   Hercules, Inc.
Washington
ILLINOIS
   Division Lead Company
Summit
MISSOURI
   Mallinckrodt Chemical Works
St.  Louis
NEW  JERSEY

   J.  T.  Baker Chemical Company
   Rhodia, Inc.
   Sylvan Chemical Corporation
Phillipsburg
New Brunswick
Englewood Cliffs
NEW  YORK

   Alloys Unlimited, Inc.
   American Smelting and Refining Co.
   Anglo-American Metal & Ferro
     Alloy Corporation
   Asarco Intermetallics Corporation
   Ascher Alloys,  Inc.
   Atomergic Chemetals Company
   Belmont Smelting and Refining Works
   City Chemical Corporation
   Gallard-Schlesinger Chemicides, Inc.
   International Selling Corporation
Melville
New York City

New York City
New York City
Brooklyn
Carle Place, L. I.
Brooklyn
New York City
Carle Place, L. I.
New York City

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                          -51-
   Kawecki Chemical Company
   McKesson Chemical Company
   Mutchler Chemical Company, Inc.
   Phillip Brothers Chemicals,  Inc.
   Republic  Chemical Corporation
   J. A.  Samuel and Company,  Inc.
   Semi Alloys,  Inc.
   United Mineral & Chemicals,  Inc.
New York City
New York City
New York City
New York City
New York City
New York City
Mount Vernon
New York City
OHIO
   The Harshaw Chemical Company
Cleveland
PENNSYLVANIA

   Bram Metallurgical Chemical Company  Philadelphia
   The O. Hommel Company               Pittsburgh
   Pennsylvania Coal Products Company    Petrolia
   Rare Metal Products Company          Atglen
   Semi-Elements,  Inc.                   Saxonburg
TEXAS
   Industrial Materials Company
Houston
WASHINGTON
   Cominco American Incorporated
Spokane
WISCONSIN
   The Ansul Company
Marinette
(Thomas Register;  Dec. 1968 Ed. )

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 BIBLIOGRAPHIC DATA
 SHEET
1. Report No.
  APTD-1507
3. Recipient's Accession No.
4. Title and Subtitle

   National  Inventory of  Sources and  Emissions: Arsenic - 1968
                                                5' Report Date
                                                   May 1971
                                                                     6.
7. Author(s)
                                                8. Performing Organization Rcpt.
                                                   No.
9. Performing Organization Name and Address

   W.  E. Davis  & Associates
   9726 Sagamore Road
   Leawood,  Kansas
                                                 10. Project/Task/Work Unit No.
                                                 11. Contract/Grant No.

                                                    CPA 70-128
12. Sponsoring Organization Name and Address

   ENVIRONMENTAL PROTECTION  AGENCY
   Air Pollution Control  Office
   Durham, North Carolina
                                                 13. Type of Report & Period
                                                   Covered
                                                 14.
15. Supplementary Notes
16. Abstracts
   The inventory of atmospheric emissions  has been  prepared to provide reliable  informa-
   tion regarding the nature,  magnitude,  and extent  of the emissions  of arsenic  in the
   U.  S.  for  the year 1968.   Background  information  concerning the  basic characteristics
   of the arsenic industry  has been assembled and  included.  Brief  process descriptions
   are given,  but they are  limited to  the  areas that are closely  related to existing or
   potential  atmospheric emissions of  the  pollutant.   The arsenic emissions and  -mission
   factors presented are based on the  summation of  information obtained from  the  one
   processing  company that  produced arsenic during  1968, the copper,  lead, and zinc
   smelters,  and the reprocessing companies that handle about fifty percent of the
   arsenic consumed in the  United States.
17. Key Words and Document Analysis.  17o. Descriptors
   Air pollution
   Emission
   Inventory
   Sources
   Arsenic
   Industrial  plants
   Reprocessing
   Meturgical  furnaces
   Mining
   Consumption
17b- Identifiers/Open-Ended Terms
   Year 1968
   United States
     Utilization
17e. COSATI Field/Group
  138
18. Availability Statement
                     Unlimited
                                     19. Security Class (This
                                        Report)
                                          UNCLASSIFIED
                                                          20. Security Class (This

                                                              a8UNCLASSIFIF.D
          21. No. of Pages

               58
                                                           22. Price
FORM NTIS-33 (REV. 3-721
                                                                                USCOMM-OC 110S2-P72

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    INSTRUCTIONS  FOR  COMPLETING  FORM  NTIS-35 (10-70) (Bibliographic Data Sheet based on COSATI
    Guidelines to Format Standards for Scientific and Technical Reports Prepared by or for die Federal Government,
    PB-180 600).

    1.   Report Number.  Each individually bound report shall carry a unique alphanumeric designation selected by the performing
        organization or provided by the sponsoring organization.  Use uppercase letters and  Arabic numerals only.  Examples
        FASEB-NS-87 and FAA-RD-68-09.

    2.   Leave blank.

    3.  Recipient's Accession Number. . Reserved for use by each report recipient.

    4.  Title and Subtitle.  Title should indicate clearly and briefly the subject coverage of the report, and be displayed promi-
       nently.  Set subtitle,  if  used,  in smaller type or otherwise subordinate it to main title. When a  report is prepared in  more
       than one volume, repeat  the primary title, add volume number and include subtitle for the specific volume.

    5.  Report Dote. F.ach report shall carry a date indicating at least  month and year.  Indicate die basis on which it was selected
       (e.g., date of issue, date of approval, date of preparation.


    6.  Performing Organization Code.  Leave blank.

    7.  Authors).  Give name(s) in conventional order' (e.g., John R. Doe, or J.Robert  Doe).  List  author's affiliation if it differs
       from the performing organization.

    8.  Performing Organization  Report Number.  Insert  if performing organization wishes to  assign this  number.

    9.  Performing Organization  Name  and  Address.  Give name, street, city, slate, and  zip code.  List  no more than two levels of
       an organizational hierarchy.  Display the name of the organization exactly as  it  should appear in Government indexes such
       as  USGRDR-I.

   10.  Project/Tosk/Work Unit  Number.  Use the project, task and work unit numbers under which the report  was prepared.

   11.  Contract/Grant Number.  Insert contract  or grant number under which report was  prepared.

   12-  Sponsoring Agency Nome and Address.  Include  zip code.

   13.  Type of Report and Period Covered.  Indicate  interim, final, etc., and, if applicable,  dates covered.

   14.  Sponsoring Agency Code.  Leave blank.

   IS.  Supplementary Notes.  Enter information not  included elsewhere  but  useful, such  as: Prepared in cooperation  with . .  .
       Translation of ... Presented at conference of ...  To be published in ...   Supersedes . . .       Supplements

   16.  Abstract.   Include a btief  (200 words or less) factual summary of the  most significant information contained in the report.
       If the report contains a significant bibliography  or literature survey,  mention it here.

   17.  Key Words and  Document Analysis,  (o).  Descriptors.  Select from the Thesaurus of  Engineering and Scientific Terms the
       proper authorized terms that identify the  major concept of the research and are sufficiently specific and precise to be  used
       as index entries for cataloging.
       (b).  Identifiers and Open-Ended Terms.   Use identifiers for  project names, code names, equipment designators,  etc.  Use
       open-ended terms written in descriptor form for those subjects for which no descriptor exists.
       (c).  COSATI Field/Group.   Field and Group  assignments are  to be taken from  the  1963 COSATI Subject  Category  List.
       Since the majority of documents are  multidisciplinary in nature, the primary Field/Group assignment(s) will be the specific
       discipline, area of human endeavor,  or type of physical object.  The applicaiion(s) will be cross-referenced with secondary
       Field/Group assignments that will follow the primary posting(s).

   18.  Distribution Statement.  Denote releasability to the public  or limitation for reasons  other than security for  example  "Re-
       lease unlimited".  Cite any availability to the public, aith  address and price.

   19 & 20. Security Classification.  Do not submit classified reports to the National Technical

   21.  Number of  Pages.   Insert the total number of pages, including this  one and unnumbered pages,  but excluding  distribution
       list, if any.

   22.  Price. Insert the price  set by the National Technical Information  Service or the Government Printing Office, if known.


FORM NTIS-39 (REV. 3-72)                                                                                  USCOMM-DC  I4892-P72



fcU.S.  G.P.O. :  1973-746-770/4179 . Region No.  4

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