U.S. DEPARTMENT OF COMMERCE
                      National Technical Information Service
                      PB-265 261
ENVIRONMENTAL
MICROTHESAURUS
A Hierarchical  List of
Indexing Terms Used by NTIS
National Technical Information Service &
Environmental Protection Agency
May 1977
               NTIS Data Base Reference Aid

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            CONTENTS
Bibliographic Data Sheet	 ii
Introduction	 iii
General Terms	  1
Chemical Terms	  73

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BIBLIOGRAPHIC DATA
SHEET
1. Report No.
   NTIS/SR-77/03
PB  265   261
4. Title and Subtitle
 Environmental Microthesaurus—A Hierarchical  List
 of Indexing Terms Used by NTIS
                                        5. .Report Date
                                          May 1977
                                        6.
7. Author(s)
                                        8. Performing Organization Rept.
                                          No.
9. Performing Organization Name and Address
 Information Analysis Branch
 National  Technical Information Service
 Department of Commerce
 Springfield, VA  22161
                                        10. Project/Task/Work Unit No.
                                        11. Contract/Grant No.
12. Sponsoring Organization Name and Address
 National Technical Information Service
 Department of Commerce
 Springfield, VA  22161

 Environmental Protection Agency
 Washington, DC
                                        13. Type of Report & Period
                                          Covered
                                        14.
16. Abstracts
       In a vocabulary  information system it  is  important to have  a con-
  trolled vocabulary  for  information retrieval.   However, when  searching
  the data base of the  National Technical Information Service  (NTIS)  for
  environmental research  reports, one is faced with using search keywords
  from four thesauri  as well as free language terms.   These keyword
  sources are:  The Department of Defense thesaurus,  Energy Research and
  Development Administration thesaurus, National Aeronautic and Space
  Administration thesaurus,  the thesaurus used by NTIS, and controlled
  free language terms.  This microthesaurus integrated hierarchically the
  vocabulary of these five sources to allow easier retrieval for environ-
  mental terms.  Generic  relationships and thesaural origins are main-
  tained for each term.

       The microthesaurus is divided into two sections:

            The first section contains more than 1800 terms that
            express environmental concepts relating to water, air,
            noise, and radiation pollution, disposal of solid waste,
            and environmental health.

            The second  section lists more than  550 chemicals that
            are important to environmental studies.  Those chemicals
            not covered by one of the major thesauri are named  using
            a modified  version of the American  Chemical Society
            (Chemical Abstracts) nomenclature.
17c. NTIS Field 'Group 68 ' 88
18. Availability Statement
                              19. Security Class (This
                                 Report)
                                  UNCLASSIFIED
                                               20. Security .Class (This
                                                 Page
                                               	UNCLASSIFIED
       21. No. of Pages
                                                22. Price
FORM NTIS-3S IREV. 10-73)  ENDORSED BY ANSI AND UNESCO.
                                          THIS FORM MAY BE REPRODUCED
                                                                 USCOMM-DC 8265-P74

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                    INTRODUCTION
~T~ his Environmental Microthesaurus was prepared by NTIS to assist users of the
 '   NTIS data base in retrieving environmentally oriented reports. A diversity in ter-
minology  exists in  our  data  base because  reports announced by  NTIS are
catalogued and indexed not only by NTIS, but also by other agencies that use their
own indexing keyword vocabularies. Currently these keywords may  be found in
four separate thesauri as well as in free-language terms. The thesauri  used are:
   •   DDC Retrieval and Indexing Terminology (Dept. of Defense).
      Availability: NTIS, $30.50, paper copy or $4.50, microfiche (order number, AD/A-001 200-SET).
   •   ERDA Subject Indexing  and Retrieval Thesaurus  (Energy  Research &
      Development  Adm.)
      Availability: NTIS, $16.25, paper copy or $3, microfiche (order number, TID-7000R1).
   •   NASA Thesaurus. Volume 1, Alphabetical  Listing and Volume  2, Access
      Vocabulary (National Aeronautics & Space Adm.)
      Availability: NTIS, Vol. 1, $15, paper copy or $3, microfiche (order number, N76-17992)and Vol.
      2, $8.50, paper copy or $3, microfiche (order number, N76-17993).
   •   Thesaurus of  Engineering and Scientific Terms    (Test)  (Dept. of Defense
      and Engineers Joint Council)
      Availability: Engineers Joint Council, 345 E. 47th Street, New York, NY 10017, $20, soft cover,
      $25, hard cover.
    This microthesaurus is an attempt to bring  together the environmental terms
    from these thesauri and to show their heirarchical relationships. Because stan-
dardization of indexing terms is of great  utility in retrieving information from data
bases, we hope this microthesaurus of  already established terms will  aid those
planning to produce an environmental indexing vocabulary, as well as those who
search our data base.

The  microthesaurus is divided into two  sections:
   •   The first section contains more than 1800 terms that express environmental
      concepts relating to water,  air, noise, and radiation pollution, disposal of
      solid waste, and environmental health.
   •   The second section lists more than  550 chemicals that are important to
      environmental studies. Those chemicals not covered by  one of the major
      thesauri  are  named using a modified version of the American  Chemical
      Society (Chem Abstracts) nomenclature.
    he terms in this microthesaurus are identified by source as follows:
T
     (D)  DOD Thesaurus                           (E)   ERDA Thesaurus
     (N)  NASA Thesaurus                          (T)   Test Thesaurus
     (*)  NTIS free-language terms, not in above lists.
Where keywords are contained in more than one thesaurus, each source letter is
given: eg, (DNT), (DENT), or (ET). Other symbols used in this microthesaurus are:

     UF  Used For                    BT          Broader Term
     NT  Narrower Term               RT          Related Term
     USE Use what follows             SEE UNDER  A cross reference
     DEF Definition of terms            NOTE:       Brief explanation
Entries exist for all synonyms, including spacing variations: eg,
Law   (Jurisprudence)  (N)  and  Law(Jurisprudence) (DT).
   This is the first edition of this microthesaurus of environmental terms; and up-
   date is planned for next  year. Any comments or suggestions would be most
welcome. Rlease write to Information Analysis Branch, National  Technical Informa-
tion  Service, 5285 Port Royal Road, Springfield, VA 22161.

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                                  General    Terms
Absorbers (Equipment) (N)
Absorbers (Equipment)  (DT)
  RT Air pollution control equipment (DT)
    Water pollution control equipment (D)
Absorption (Biological) (D)
Absorption (Biology) (T)
  RT Accumulation (DET)
     Pesticide removal (*)
     Pesticide residues (*)
    Residues (DENT)
Abundance (DENT)
  NT  Natural abundance (*)
Accidents (DENT)
  NT  Aviation accidents (DT)
     Industrial accidents  (ET)
     Loss of coolant (E)
     Nuclear reactor accidents (T)
     Reactor accidents (DE)
     Ship accidents (*)
Acclimatization (DNT)
  BT Adaptation (DNT)
  RT Biological  adaptation (E)
    Ecology (DENT)
Accumulation (DET)
  RT Absorption(Biological) (D)
     Absorption(Biology) (T)
     Bioaccumulation (*)
     Biological accumulation (E)
     Environmental persistence (*)
     Pesticide residues (*)
    Residues (DENT)
Accumulations  (N)
Acid mine drainage (E)
  BT Drainage (DNT)
  RT Mine acid  drainage (*)
    Mine wastes (*)
    Mine waters (T)
Acid rain (E)
  BT Rain (DENT)
  RT Air pollution (DENT)
    Precipitation washout  (*)
    Washout (E)
Acid smut (*)
  RT Air pollution (DENT)
Acoustic absorption  (DT)
  RT Noise reduction  (DNT)
Acoustic attenuation (DN)
  RT Acoustic absorption (DT)
    Noise reduction (DNT)
Acoustic detection (DT)
  BT Detection (DNT)
Acoustic detectors (DT)
  BT Detectors (DNT)
  RT Frequency  analyzers (DNT)
    Frequency meters (DT)
    Noise meters (NT)
    Sound analyzers (DT)
    Sound level meters (T)
     Vibration  meters (NT)
Acoustic environments (T)
Acoustic insulation (DT)
  RT Noise reduction (DNT)
Acoustic measurement (DT)
  RT Frequency measurement (ENT)
     Noise measurement (NT)
Acoustic measurements (N)
Acoustic measuring instruments (T)
  NT Frequency meters (DT)
     Noise meters (NT)
     Rayleigh disks (T)
     Sound analyzers. (DT)
     Sound level meters (T)
Acoustics (DENT)
  RT Noise (Sound) (N)
Activated carbon (DET)
Activated carbon treatment (T)
  RT Air pollution  control  (*)
     Sewage treatment (DET)
     Water pollution control (*)
     Water treatment (DNT)
     Westvaco  process (*)
Activated sludge  process (DET)
  RT Biological industrial waste
       treatment (*)
     Sewage treatment (DET)
Adaptation (DNT)
  NT Acclimatization (DNT)
     Adjustment(Psychology) (DT)
     Biological adaptation (E)
  RT Ecology (DENT)
     Thresholds (Perception) (N)
     Thresholds(Perception) (T)
Administration (E)
  NT Public  administration (DT)
  RT Management (DENT)
Adsorbents  (NT)
  NT Activated carbon (DET)
     Alumina (D)
     Ammonia  (DENT)
    Ammonium compounds (DENT)
     Ammonium sulfates (EN)
     Aniline/N-N-dimethyl (*)
     Bicarbonates  (D)
     Calcium carbonates (ET)
     Calcium oxides (DENT)
     Carbonates (DENT)
     Cellulose (DENT)
     Dolomite (DE)
     Dolomite(Rock) (T)
     Formates (DENT)
     Limestone  (DENT)
     Magnesium carbonates (ET)
     Magnesium oxides (DENT)
     Magnesium sulfites (*)
     Metal oxides  (N)
     Nahcolite (E)

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    Sodium aluminates (*)
    Sodium carbonates (DENT)
    Sodium  sulfates (DET)
    Sodium  sulfites (NT)
    Vanadium oxides (ET)
    Zinc oxides (DENT)
  RT Activated carbon (DET)
    Aluminum oxides (E)
    Fly ash  (DET)
    Straw (DT)
    Vermiculite (ET)
Adsorption (DENT)
    Adsorbates (T)
    Adsorbents (DENT)
    Adsorbtivity (ENT)
    Chemisorption (DENT)
    Desorption (DENT)
    Surface properties  (DENT)
Advanced sewage treatment - USE:
     Tertiary treatment  (*)
Aeration (DENT)
  RT Deaeration (DT)
    Degassing (ENT)
    Oxidation (DENT)
    Oxygenation (NT)
Aeration ponds (*)
  BT Lagoons(Ponds) (T)
  RT Anaerobic lagoons (*)
Aerators (T)
  NT Waldhof aerators (*)
  RT Deaerators (T)
Aerial  photography  (DNT)
  RT Airborne detection (*)
     Remote sensing (ET)
Aerobic conditions (E)
Aerobic digestion (E)
  BT Digestion (E)
Aerobic processes (DT)
Aerobiology  (DNT)
  RT Airborne infection (N)
Aerodynamic noise (DNT)
  BT Noise (Sound) (N)
     Noise(Sound) (DT)
    Sound waves (DENT)
  RT Aircraft noise (DNT)
     Aircraft  propeller noise (T)
     Jet aircraft noise (NT)
     Sonic boom (DT)
    Sonic booms (N)
Aerometric and emissions reporting system (*)
  UF Aeros
  RT Air quality data (*)
Aeronomy (DNT)
  RT Atmospheric physics  (DNT)
Aeros - USE:
    Aerometric and emissions reporting system (*)
Aerosol spray containers (*)
  BT Containers (DENT)
Aerosol spray propellents - USE:
     Spray propellents (*)
Aerosols (DENT)
  RT Air pollution (DENT)
     Dust (DNT)
     Fallout (DENT)
     Smog (DENT)
     Smoke (DNT)
     Soot (DNT)
Aerospace industry (NT)
  BT Industries (DNT)
Afterburners (DET)
  RT Afterburning (DNT)
     Air pollution control equipment (DT)
     Aircraft engines (DNT)
     Automobiles (ENT)
     Catalytic converters (ET)
     Jet engines (DNT)
  DEF Air pollution control devices that
     recombust exhaust gases.  Used on
     aircraft and automobiles.
Afterburning (DNT)
  BT Combustion (DENT)
Agricultural economics (T)
Agricultural engineering (T)
Agricultural runoff (*)
  BT Runoff (DT)
Agricultural wastes (ET)
  RT Bagasse (ET)
     Barnlot wastes (*)
     Feedlot wastes (*)
     Manure (*)
     Organic wastes (ET)
     Rice hulls (*)
Air fuel  ratio  (*)
  RLCombustion (DENT)
     Fuel-air ratio (E)
Air pollution (DENT)
  NT Global air pollution (N)
     Indoor air pollution (D)
  RT Combustion products (DENT)
     Domestic wastes (*)
     Exhaust emissions  (T)
     Exhaust gases (DENT)
     Flue gases (DT)
     Gaseous wastes (E)
     Industrial  wastes (ENT)
     Wastes(lndustrial) (D)
Air pollution abatement (E)
  BT Abatement (T)
  NT Implementation air pollution planning (*)
     Smoke abatement (DNT)
     Supplementary air pollution abatement (*)
  RT Air quality maintenance planning  areas (*)
     Clean Air Act (E)
     Clean coke process (E)
     Carpooling (E)
  NOTE: NTIS uses this term only to express the

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     prevention of air pollution by design changes
     or planning.  It covers methods to stop pol-
    lutants from even being formed. Some examples
    of its use would be when carpools are en-
    couraged to reduce pollution, or when a new,
     less-polluting process is developed to
     replace an  older one.
Air pollution control (*)
  BT Pollution control (N)
  RT Adsorption (DENT)
     Alkaline scrubbing (*)
     Ammonia scrubbing (*)
     Amoco Sulfur Recovery Process (E)
     Beavon  process (E)
     Cat-ox Process  (E)
     Citrate process  (E)
     Claus Process (E)
     Desulfurization  (DET)
     Desulfurizing (N)
     Dust control (DT)
     Ecominco Process  (*)
     Electrostatic precipitation (DT)
     Evaporation control (T)
     Filtration (DENT)
     Injection (DENT)
     Limestone  injection (*)
     Limestone  scrubbing (*)
     Marble bed scrubbers (*)
     Molten carbonate process (E)
     Odor control (T)
     Overfire air systems (*)
     SF Nateko  Process (E)
     Stone and Webster Process (E)
     Sulfation (DNT)
     Waste gas recovery (*)
     Wellman Process (*)
     Westvaco  process (*)
  NOTE: NTIS uses this term only when con-
     trol processes or techniques are de-
     scribed that remove pollutants  after
    they have been  formed by a source.
Air pollution control agencies  (*)
  BT Pollution control agencies (E)
  RT Federal agencies (*)
     Government agencies (*)
Air pollution control equipment (DT)
  BT Pollution control equipment (E)
  NT Fluxforce/condensation scrubbers (*)
  RT Absorbers  (Equipment) (N)
     Absorbers(Equipment) (DT)
     Afterburners (DNT)
     Air cleaners (DT)
     Air filters (DENT)
     Air washers (T)
     Catalytic reactors(Exhaust systems (*)
     Charged droplet scrubbers  (*)
     Chemical reactors (DENT)
     Contactors (NT)
    Cyclone separators (DET)
     Dust collectors (ENT)
     Dust filters (T)
     Electrostatic precipitators (ENT)
     Exhaust gas  recirculation systems (*)
     Exhaust recirculation systems (E)
     Fabric filters (*)
    Fluidized bed processors (DNT)
     Gas filters (DT)
    Gas scrubbers (T)
    Gravity  settling chambers (*)
    Hydrocarbon accumulators (*)
    Molten salt scrubbers (*)
    Packed tower scrubbers (*)
    Scrubbers (DENT)
    Separators (DNT)
    Spray tower scrubbers (*)
     Strippers (T)
    Thermal afterburners (*)
    Thermal reactors(Exhaust systems) (*)
    Venturi scrubbers (*)
    Venturi separators  (*)
Air pollution  detection  (*)
  RT Atomic spectroscopy (DT)
    Chemical analysis (DENT)
     Colorimetric  analysis (DT)
    EPA Method 5 (*)
    EPA Method  6 (*)
    EPA Method  7 (*)
    EPA Method  8 (*)
    EPA Method  9 (*)
    EPA Method 10 (*)
    Gas analysis (DENT)
    Gas chromatography (DENT)
     Infrared detection (DT)
    Infrared spectroscopy (DNT)
     Laser spectroscopy  (*)
    Mass spectroscopy  (DENT)
    Microscopy (DENT)
    Microwave spectroscopy (DT)
    Nondispersive infrared spectroscopy (*)
     Parrosaniline  analysis (*)
     Phenol disulfonic acid analysis (*)
     Potentiometric analysis  (DNT)
     Radioactivation analysis (DT)
    Raman spectroscopy (DNT)
     Saltzman analysis (*)
     Spectrochemical  analysis (T)
     Spectroscopic analysis (NT)
    West Gaeke analysis (*)
     X ray fluorescence  (NT)
     NOTE:  This term is  used to describe techniques
    or devices to detect substances that have
     escaped  into  the air.  It is not used when
     the  substance is  still within the source,
    e.g. the engine, chimney, or exhaust system.
Air pollution economics (*)
  RT Water pollution economics (*)

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Air pollution effects (Animals) (D)
  RT Toxicology (DENT)
Air pollution effects (Humans) (*)
  RT Industrial hygiene (DT)
     Industrial medicine (DET)
     Occupational diseases (DET)
     Occupational health and safety (*)
     Public health (DENT)
     Respiratory diseases (DNT)
     Toxicology (DNT)
     Water pollution effects(Humans) (*)
Air pollution effects (Materials) (*)
  RT Atmospheric corrosion (DT)
     Atmospheric effects (N)
     Chemical attack (NT)
     Chemical attack(Degradation)  (D)
     Corrosion (DENT)
     Degradation  (DNT)
     Deterioration (DNT)
     Soiling index (*)
     Water pollution effects(Materials) (*)
Air pollution effects (Plants) (*)
  RT Toxicology (DENT)
Air pollution episodes (*)
  RT Contingency planning (*)
Air pollution forecasts (*)
Air pollution monitors (E)
  BT Monitors (DENT)
  RT Air samplers (E)
     Detectors (DNT)
     Gas detectors (DNT)
     Impactors (NT)
     Samplers (DENT)
     Warning systems (DNT)
Air pollution potential (*)
Air pollution public emergency limits (*)
  RT Contingency planning (*)
Air pollution sampling (*)
  RT Environmental  monitoring (N)
     Monitoring (DET)
  NOTE: NTIS uses  this term only to
     describe the  equipment, siting, or
     techniques to monitor pollutants
     when gathering  air quality data.
Air pollution short  term  limits  (*)
Air pollution standards (*)
  BT Standards (DENT)
  RT Water pollution standards (*)
Air pollution supplementary control systems (*)
  NOTE: NTIS uses this term to describe control
    systems designed to be used only on a
     temporary basis along with  regular control
     equipment.
Air purification  (N)
  RT Air cleaning (E)
     Air conditioning (T)
  NOTE: NTIS does  not use this term to
     cover air pollution control.
Air quality  (DEN)
  RT Environmental quality (N)
Air Quality Act of 1967 (*)
  UF Public  Law 90-148
  BT Air pollution  (DENT)
     Air pollution abatement (E)
     Law (Jurisprudence)  (N)
     Law(Jurisprudence) (N)
     Laws (EN)
     Legislation (DET)
Air quality  control regions (*)
Air quality  data (*)
  RT Aerometric and emissions  reporting system (*)
     Concentration (Composition) (N)
     Concentration(Composition) (DT)
     Storage and retrieval of aerometric data (*)
  NOTE: NTIS uses this term only when a
     report contains  actual concentration
     data for specific counties,  cities, regions,
     states, or countries.
Air Quality  Display Model  (*)
  BT Mathematical models (DENT)
Air quality maintenance (*)
  RT Air pollution abatement (E)
     Implementation air pollution planning
       programs (*)
  NOTE: NTIS uses this term when describing the
    means by which regions or urban areas can
     maintain or lessen their air quality over
     a  period of time.
Air quality maintenance planning areas (*)
  RT Air pollution abatement (E)
Air Quality  Surveillance Network  (*)
Air samplers (E)
  BT Samplers (DENT)
  RT Air pollution monitors (E)
     Air sampling (N)
     Detectors (DNT)
     Gas detectors (DNT)
     Impactors (NT)
    Warning systems (DNT)
     Air sampling (N)
Air sampling  (N)
  BT Gas  sampling (T)
  RT Air pollution sampling (*)
     Air samplers (E)
    Global  air sampling  program (N)
Airborne detection (*)
  RT Aerial photography (DNT)
     Detectors (DNT)
     Remote sensing  (ET)
Airborne detectors (T)
  BT Detectors (DNT)
Airborne infection (N)
  RT Aerobiology (DNT)
Aircraft (DENT)
  NT Airplanes (DT)
     Commercial aircraft  (DNT)

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     Helicopters (DNT)
     Jet aircraft (DNT)
     Military aircraft (DNT)
     Supersonic aircraft (DNT)
     Supersonic transport (E)
     Supersonic transports (DNT)
Aircraft engines (DNT)
Aircraft exhaust (D)
  RT Exhaust emissions (T)
     Exhaust gases (DENT)
     Jet engine exhaust (D)
Aircraft fuels  (EN)
  BT Fuels (DENT)
  RT Aviation fuels (DET)
     Aviation gasoline (DT)
Aircraft ground operations  (*)
  RT Airports (DENT)
Aircraft industry (DNT)
  BT Industries (DNT)
Aircraft landing (NT)
  RT Airports (DENT)
Aircraft landings (D)
Aircraft noise  (DNT)
  BT Noise (Sound) (N)
     Noise(Sound) (DT)
  RT Aerodynamic noise (DNT)
     Aircraft propeller noise (T)
     Engine noise (DNT)
     Jet aircraft noise  (NT)
     Jet engine noise (DT)
     Sonic boom (DT)
     Sonic booms (N)
Aircraft propeller noise (T)
  BT Propeller  noise (D)
  RT Aircraft noise  (DNT)
Airplanes (DT)
  NT See under  Aircraft
Airport and Airway Development Act of 1970 (*
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation (DET)
  RT Noise pollution (DN)
     Transportation noise (*)
Airport noise (*)
  BT Noise (Sound) (N)
     Noise(Sound) (DT)
  RT Aircraft ground operations (*)
     Aircraft landing (T)
     Aircraft landings (D)
     Aircraft noise (DNT)
     Aircraft propeller  noise (T)
     Airport planning (N)
Airport planning (N)
  BT Airports (DENT)
    Planning (DENT)
  RT Land  use (DENT)
    Regional planning (NT)
Airports (DENT)
  RT Aircraft ground operations
     Aircraft landing (NT)
     Aircraft landings (D)
Alaska  gas pipeline  (E)
  BT Alaska pipelines (E)
     Pipelines (DENT)
Alaska  oil pipeline (E)
  BT Alaska pipeline (E)
     Pipelines (DENT)
  RT Petroleum pipelines (T)
     Trans Alaska pipeline (*)
Alaska  pipeline (E)
  BT Pipelines (DENT)
  NT Alaska gas pipeline (E)
     Alaska oil pipeline (E)
  RT Arctic gas pipelines  (E)
     Gas pipelines (E)
     Petroleum pipelines (T)
     Trans Alaska pipeline (*)
Algae  (DENT)
  BT Plants (Botany) (N)
     Plants(Botany) (DT)
  NT Blue algae
       Cyanophyta  (T)
     Blue green algae (N)
     Brown algae
       Phaeophyta  (T)
     Green algae
        Chlorophyta (T)
     Red algae
       Rhodophyta  (T)
  RT Algal bloom (N)
     Algal  blooms (*)
     Chlorophyta  (T)
Algal bloom (N)
Algal blooms (*)
Algicides (T)
  BT Pesticides (DENT)
Alkaline scrubbing (*)
  RT Ammonia scrubbing  (*)
     Dry methods (*)
     Limestone scrubbing  (*)
     Wet methods (*)
Alkalized alumina  -  USE:
     Sodium aluminates (*)
Aluminum industry (T)
  BT Industries (DNT)
Ambient  noise (DT)
  BT Noise (Sound)  (N)
     Noise(Sound) (DT)
Ammonia scrubbing  (*)
  RT Alkaline scrubbing (*)
     Wet methods (*)
Ammonia stripping (*)
  RT Denitrification  (*)
     Sewage treatment (DT)
Amoco  sulfur recovery process

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  RT Air  pollution control (*)
    Waste gas recovery (*)
  DEF Process to recover elemental sulfur
    from streams containing hydrogen sulfide.
Anaerobic conditions (ET)
Anaerobic digestion (E)
  BT Digestion (E)
  RT Biogas process (E)
Anaerobic lagoons (*)
  BT Lagoons(Ponds) (T)
  RT Aeration ponds (*)
Anaerobic processes (DT)
Animal ecology (T)
  BT Ecology (DENT)
Animal feeds (E)
  RT Feeding stuffs  (T)
     Single cell protein (E)
Animal physiology (T)
  BT Physiology (DET)
Animal products (T)
Animal wastes  (*)
Anion exchanging  (T)
  BT Ion exchanging (NT)
  RT Cation exchanging (T)
     Demineralization (DET)
     Water softening (T)
Annelida (DT)
  RT Worms (DNT)
Annelids (E)
Anthracite (ET)
  BT Coal (DENT)
Antiknock (D)
Antiknock additives (NT)
  BT Fuel additives  (DT)
Aquaculture (ET)
  UF  Fish farming
  RT Fisheries (DT)
     Hydroponics (DNT)
Aquatic animals (DT)
  NT Crustacea (DT)
  RT Water pollution effects(Animals) (*)
Aquatic biology (T)
  NT Aquatic microbiology (T)
     Fresh water biology  (T)
     Marine biology (DNT)
  RT Benthos (T)
     Biochemical oxygen demand (DET)
    Chemical oxygen demand (*)
     Ecology (DENT)
     Ecosystems (DEN)
    Marine microorganisms (T)
     Water pollution effects(Animals) (*)
     Water pollution effects(Plants) (*)
Aquatic  ecosystems (E)
  BT Ecosystems (DEN)
  RT Ecology (DENT)
     Terrestrial ecosystems (E)
Aquatic  microbiology (T)
  RT Aerobic bacteria (DT)
    Algae (DENT)
    Anaerobic bacteria (DT)
    Bacteria (DENT)
    Fungi (DENT)
    Marine  microorganisms (T)
    Phytoplankton (DET)
Aquatic organisms (DE)
  BT Animals (DNT)
    Plants (E)
    Plants (Botany) (N)
    Plants(Botany) (DT)
  NT Amphibians (DE)
    Crustacea (DT)
    Crustaceans (E)
    Echinodermata (DT)
    Echinoderms (E)
    Fishes (DENT)
    Molluscs (E)
    Mollusks (N)
    Plankton (DENT)
Aquatic plants (DT)
  BT Plants (Botany) (N)
    Plants(Botany) (DT)
  NT Aquatic weeds (DT)
    Sea grasses (NT)
Aquatic weed control (*)
  BT Weed control (DT)
Aquatic weeds  (DT)
  BT Aquatic plants (DT)
Aquifers (DENT)
  RT Artesian wells (T)
    Ground water (DENT)
    Ground water recharge (T)
    Hydrogeology (NT)
    Water supply (T)
Arable land (T)
  BT Land (NT)
  RT Cultivation  (NT)
    Irrigation (ENT)
    Land  reclamation (ET)
Arctic gas pipelines (E)
  BT Gas  pipelines (E)
  RT Alaska  pipeline (E)
    Trans Alaska pipeline (*)
Arctic regions (DENT)
  BT Regions (DNT)
Areas (*)
  RT Builtup areas (T)
    Central city (T)
    Communities (DENT)
    Industrial areas  (N)
    Megalopolis (T)
    Megalopolises (N)
    Metropolitan areas (*)
    Neighborhoods (T)
    Remote  areas (D)
    Residential areas (N)

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     Rural areas (DENT)
     Rural urban fringe (T)
     Standard metropolitan statistical areas (*)
     Suburban areas (N)
     Urban areas (DET)
Arid land (DT)
  BT Land (NT)
  RT Deserts (DENT)
     Dry farming (T)
     Semiarid  land (T)
Arid lands (N)
  BT Land (NT)
Arid regions (*)
  BT Regions (DNT)
Artificial recharge  (*)
  BT Ground water recharge (*)
  NT Induced  infiltration (*)
     Pit recharge (*)
Artificial reefs (*)
  RT Solid waste disposal (*)
Asbestos deposits (T)
Asbestos industry (*)
  BT Industries (DNT)
Asbestosis (T)
  BT Respiratory diseases (DNT)
  RT Air pollution effects  (Humans) (*)
     Industrial  medicine (DET)
     Occupational diseases (DET)
Ashes (DENT)
  RT Deashing (E)
     Solid wastes (DE)
Asphalt plants (T)
  BT Industrial plants (DENT)
Assessment (D)
Assessments (ENT)
  NT Environmental impact assessments (*)
Asthma (DNT)
  BT Respiratory diseases (DNT)
Atmosphere (Earth) - USE:
     Earth atmosphere (ENT)
Atmospheric attenuation (NT)
Atmospheric boundary layer (N)
Atmospheric chemistry (DN)
  NOTE: NTIS  uses this term only to cover
     chemical reactions  in or below the
     stratosphere.
Atmospheric circulation (DNT)
Atmospheric composition (NT)
  RT Concentration (Composition) (N)
     Concentration(Composition) (DT)
Atmospheric condensation (DT)
  RT Dew (DNT)
     Fog (DNT)
     Precipitation (Meteorology) (N)
     Precipitation(Meteorology) (T)
Atmospheric contamination control (*)
  RT Indoor  air pollution (D)
  NOTE: NTIS  uses this  term only when closed
    manmade systems are discussed, e.g.
    spacecraft, submarines.
Atmospheric corrosion (DT)
  BT Corrosion (DENT)
  RT Air pollution effects(Materials) (*)
Atmospheric density (DNT)
Atmospheric diffusion  (NT)
  RT Hiway computer program (*)
    Gaussian plume models (*)
    Turbulent diffusion (DNT)
Atmospheric echo sounding (*)
  RT Air pollution (DENT)
    Remote sensing  (ET)
    Temperature  inversions (D)
Atmospheric effects  (N)
  RT Air pollution effects(Materials) (*)
    Erosion (DENT)
    Soil erosion  (DNT)
    Wind effects  (N)
    Wind erosion (NT)
Atmospheric models (NT)
  RT Computerized simulation (DNT)
    Gaussian plume models (*)
    Mathematical models (DENT)
Atmospheric motion (DT)
  RT Atmospheric  circulation (DNT)
    Atmospheric diffusion  (NT)
    Gaussian plume models (*)
    Global  air pollution (N)
    Temperature inversion  (D)
    Temperature inversions (NT)
    Wind (Meteorology) (N)
    Wind(Meteorology) (T)
Atmospheric physics (DNT)
  RT Aeronomy (DNT)
Atmospheric temperature (DN)
Atomic absorption spectroscopy  (E)
Atomic spectroscopy (DT)
  RT Chemical analysis (DENT)
    Spectrochemical analysis (T)
Attitude surveys  (T)
  RT Public opinion (DT)
    Surveys (DNT)
Attitudes  (T)
  RT Opinions (T)
    Public opinion (DT)
Audiometry (DNT)
  RT Auditory defects (DNT)
    Auditory perception (DNT)
    Biomedical measurement (T)
    Loudness discrimination (T)
    Pitch  discrimination  (DT)
Auditory acuity  (DT)
  RT Auditory perception (DNT)
Auditory defects (DNT)
  RT Audiometry (DNT)
    Auditory perception (DNT)
    Ear diseases  (T)

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Auditory masking  (T)
  RT Auditory perception (DNT)
Auditory perception (DNT)
  BT Perception (NT)
     Senses (T)
  NT Binaural hearing  (NT)
  RT Acoustic  perception (*)
     Hearing  (DN)
     Loudness discrimination (T)
     Pitch discrimination (DT)
Automobile engines (NT)
  RT Positive  crankcase ventilation (D)
Automobile exhaust  (D)
  RT Exhaust emissions (T)
     Exhaust gases (DENT)
Automobile fuels (EN)
  BT Fuels (DENT)
Automobile tires (T)
  BT Tires (DENT)
  RT Solid wastes (DE)
Automobile traffic reduction (*)
Automobiles  (ENT)
  BT Ground vehicles (DT)
     Passenger vehicles (DT)
  NT Electric automobiles (T)
  RT Motor vehicles (T)
Automotive engineering (DT)
Automotive fuels (DET)
Automotive industry  (DT)
  BT Industries (DNT)
Automotive vehicles  (D)
Backfilling (E)
  RT Backfills  (DT)
     Land reclamation  (ET)
Backfills (DT)
  RT Backfilling (ET)
     Earth fills (DT)
Background  noise  (DENT)
  BT Noise (Sound) (N)
     Noise(Sound)(DT)
     Sound waves (DENT)
Bacteria (DENT)
  NT Acid bacteria (*)
     Aerobic  bacteria  (DT)
       Azotobacter (DNT)
        Beggiatoales (T)
        Ferrobacillus (T)
       Pseudomonas (DENT)
       Salmonella (DENT)
       Streptococcus (DENT)
     Anaerobic bacteria (DT)
        Clostridium  (DET)
       Clostridium botulinum (N)
        Photobacterium (T)
     Coliform  bacteria  (DT)
        Coliforms  (E)
        Escherichia (N)
        Escherichia coli (DET)
     Enterobacteriaceae (DT)
     Iron bacteria  (*)
       Ferrobacillus (T)
       Thiobacillus ferrooxidans (E)
     Methane bacteria  (*)
     Nitrogen fixing  bacteria (T)
       Azobacter  (D)
       Clostridium (DET)
       Nitrobacter (N)
     Pathogenic bacteria (*)
     Sewage bacteria (*)
     Soil  bacteria (*)
     Sulfur bacteria (*)
       Beggiatoales (T)
       Sulfate reducing bacteria (T)
       Thiobacillus (T)
       Thiobacillus oxidans  (E)
       Thiobacteriaceae (T)
       Thiorhodaceae (T)
  RT Aquatic microbiology (T)
     Nitrogen fixation (ET)
     Pathogens (N)
     Soil  microbiology  (T)
Bacteriophages  (DENT)
Bag  papers (T)
  BT Packaging papers (T)
     Papers (NT)
  RT Bags (DNT)
Bagasse  (ET)
  RT Agricultural wastes (ET)
Baghouses (*)
  RT Air pollution control equipment (DT)
     Fabric filters (*)
Bags (DENT)
  BT Containers (DENT)
     Packaging materials (DT)
  NT Plastic bags (*)
  RT Bag papers (T)
Bailie process (E)
  RT Fluidized  bed processes (D)
     Fluidized bed processing (T)
     Gasification (ENT)
     Manufactured gas (T)
     Solid waste disposal (*)
     Synthetic fuels (DEN)
     Waste processing (E)
     Waste recycling (D)
  DEF A fluidized-bed pyrolysis process using
     air for conversion of municipal solid
     waste  into intermediate  Btu gas.
Bailing  (*)
  BT Materials handling (DENT)
  RT Solid  waste disposal (*)
Ballast (DNT)
Ballast tanks  (DT)
  RT Oil  pollution  (D)
Ballast water (*)
  BT Ballast (DNT)

-------
  RT Oil pollution (D)
     Oil water separators  (*)
Barges  (DT)
Barium industry (*)
  BT Metal industry (FT)
Bark  (T)
  RT Wood wastes (ET)
Barnlot wastes  (*)
  RT Agricultural wastes (ET)
     Air pollution (DENT)
     Animal wastes (*)
     Feedlot wastes (*)
    Manure (*)
    Water pollution (DENT)
Barren land  (N)
  BT Land (NT)
Barriers  (DNT)
  RT Booms (Equipment) (N)
     Booms(Equipment (T)
     Oil pollution containment (*)
     Oil retention booms (*)
Base  lines (D)
Baseline measurements (*)
Baseline studies (*)
Bays  (DEN)
Bays  (Topographic features) (N)
Bays(Topographic features) (T)
  BT Coastal  topographic  features (T)
Beaches (DNT)
  BT Topographic features (T)
Beavon process (E)
  RT Air pollution control  (*)
     Claus process (E)
    Waste gas recovery (*)
  NOTE: In this  process, sulfur is con-
    verted to H2S using CoMoO4 catalyst.
Bed load (T)
  BT Sediments (DENT)
  RT Sedimentation (DET)
    Suspended sediments  (T)
Beef cattle (T)
  RT Animal wastes (*)
     Barnlot wastes (*)
     Feedlot wastes (*)
Beneficiation  (NT)
  UF Minerals beneficiation
     Ore beneficiation
  RT Flotation (DENT)
    Separation (DNT)
    Size screening (T)
    Size separation  (NT)
Benefit  cost analysis (T)
Benthos  (ET)
  RT Aquatic  biology (T)
     Biomass (ET)
  DEF: The whole group of bottom dwelling
    organisims in a water body.  This
    includes all  organisims that crawl
    on, burrow in, or grow attached to
    the bottom.
Benzene poisoning (N)
  BT Toxic diseases (NT)
  RT Toxicology (DNT)
Berylliosis (ET)
  BT Respiratory diseases (DNT)
  RT Air pollution effects(Humans) (*)
    Industrial medicine (DET)
    Occupational diseases (DET)
Best technology (*)
  RT Federal  Water Pollution Control Act
       Amendments of  1972 (*)
    Water pollution  control (*)
  DEF This term is used to stand for the
    concept of using the  best available or
    best practicable  technology to  meet
    pollution control requirements.
Beverage containers (*)
  BT Containers (DENT)
  RT Bottles (DNT)
    Cans (NT)
    Container deposits (*)
    Disposable containers (*)
Bilge Water  (*)
Bioaccumulation (*)
  BT Accumulation (DT)
    Accumulations  (N)
  RT Biological accumulation (E)
    Ecological concentrations (E)
    Pesticide residues (*)
    Residues  (DENT)
  DEF The abnormal  or preferential
    accumulation of  a substance from
    the environment  by a plant or  animal.
Bioassay (DENT)
Biochemical cycles (T)
    NT Nitrogen cycle (ET)
Biochemical oxygen  demand  (DET)
  UF BOD
  BT Oxygen  demand (T)
  RT Aeration (DNT)
    Biological productivity (T)
    Chemical oxygen demand (*)
    Dissolved gases  (T)
    Water pollution (DENT)
  DEF The amount of oxygen necessary for
    the oxidative decomposition of a
    material  by microorganisms.
Bioclimatology (NT)
  BT Climatology (NT)
  RT Microclimatology (DNT)
Biodegradation (E)
  BT Decomposition (DENT)
  RT Composts (T)
    Sanitary landfills (E)
Biodeterioration (DT)
  BT Decomposition (DENT)

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  RT Composts (T)
     Environmental persistence (*)
     Sanitary landfills (E)
BIOGAS process (E)
  UF IGT waste  process
  BT Anaerobic digestion (E)
     Anaerobic processes (DT)
     Solid waste disposal (*)
  RT Waste  processing (E)
  DEF an anaerobic digestion process for
     converting solid municipal waste
     and sewage into  pipeline quality fuel,
     gas and an odor free, stable solid.
Bioindicators  (*)
  RT Indicator species (ET)
Biological accumulation (E)
  BT Accumulation (DET)
  RT Bioaccumulation  (*)
     Ecological concentration (E)
     Pesticide  residues (*)
     Residues (DENT)
Biological adaptation (E)
  BT Adaptation (DNT)
  RT Acclimatization (DNT)
     Ecology (DENT)
Biological indicators  (E)
  RT Bioindicators (*)
     Indicator species (ET)
Biological industrial waste treatment (*)
  BT Industrial waste  treatment (T)
     Water  pollution control (*)
  NOTE: NTIS uses this  term only to  cover the
     biological treatment of  aqueous
     industrial wastes.
Biological insect control (D)
  BT Insect control (DT)
Biological productivity (T)
  NT Primary  biological productivity (T)
  RT Ecology (DENT)
     Ecosystems (DEN)
     Fertility (DENT)
Biological radiation effects (E)
  BT Radiation effects (DENT)
  NT Genetic  radiation  effects (E)
Biological stress (E)
  RT Stress (Physiology) (N)
     Stress(Physiology) (T)
Biological warfare agents  (D)
  RT Chemical warfare agents (D)
     Demilitarization (DT)
     Liquid waste disposal (*)
     Military chemical agents (T)
     Solid waste disposal (*)
Biologically stable substances (*)
  RT Environmental persistence (*)
     Residues (DENT)
  DEF Chemicals that do not degrade from
     biological action.  Such substances
     tend  to persist in the environment.
Biomass (ET)
  DEF All  growing organic matter such as
     plants, trees, grasses, and algae.
Biosphere (EN)
  RT Ecosystems  (DEN)
     Hydrologic  cycle (T)
     Sinks(Biosphere) (*)
Birds (DENT)
Black Clawson system (E)
  RT Solid waste disposal (*)
     Waste processing (E)
  DEF A system for materials and energy
     recovery that uses wet processing
     of  municipal solid wastes.
Black liquors  (T)
  BT Industrial wastes (ENT)
     Spent liquors(Pulping) (T)
  RT White liquors (T)
  DEF Spent alkaline pulping liquors.
Blighted areas  (T)
  RT Central city (T)
     Urban areas (DET)
Boats (DNT)
  RT Ships (DENT)
BOD - USE:
     Biochemical  oxygen demand (DET)
Body burden  (E)
Body burdens (*)
Boiler feedwater (*)
  BT Feedwater (ET)
  RT Boilers (DENT)
Boilers  (DENT)
  BT Heating  equipment (NT)
  NT Firetube  boilers (*)
     Once through boilers (*)
     Steam generators (E)
     Waste heat boilers (T)
  RT Boiler Feedwater (*)
     Furnaces (DENT)
     Overfire air systems (*)
Booms  (Equipment) (N)
Booms (Equipment)  (DT)
  NT Oil retention booms (*)
  RT Oil pollution containment (*)
Boron industry  (*)
  BT Industries (DNT)
Bottles  (DNT)
  BT Containers  (DENT)
Boundary Waters Treaty Between Canada
      and the United States  (1901) (*)
  BT Law  (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation (DET)
  RT Water pollution (DENT)
Boxboard  (T)
Boxes (Containers)  (N)
10

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Boxes (DN)
Boxes (Containers) (T)
  BT Containers (DENT)
Brewing industry  (*)
  BT Food  industry (T)
     Industries (DNT)
Brick industry (T)
Brines  (DENT)
  RT Salt water (DT)
Bubble  separation (*)
  BT Flotation (DENT)
Building products  industries (*)
  BT Industries (DNT)
Buildings (DENT)
  NT Apartment  buildings (ET)
     Auditoriums (T)
     Commercial  buildings (ET)
     Farm buildings (T)
     Greenhouses (E)
     Hospitals (DENT)
     Houses (ET)
     Industrial buildings (T)
     Office buildings  (E)
     Public buildings  (T)
     Residential buildings (T)
     Religious buildings (E)
     School buildings (E)
     Schools (DENT)
     Skyscrapers (T)
  RT Commercial sector (*)
     Housing(Dwellings) (D)
     Housing (*)
     Industrial sector  (*)
     Residential sector (*)
Bulk handling (T)
  RT Hauling (NT)
     Materials handling (DENT)
Bureau of  Land  Management (*)
  RT Federal agencies (*)
     Goverment agencies (*)
Bureaus (Organizations) (N)
  RT Government agencies (*)
Burners (DENT)
  NT Gas burners (T)
     Oil burners  (DT)
Burning - USE:
     Combustion  (DENT)
Burning rate (DNT)
Burning time (NT)
By-products  (EN)
  RT Chars (E)
Byproducts (T)
  RT Materials recovery (DENT)
     Recycling (ENT)
     Salvage (DT)
     Utilization (DNT)
     Waste recyling (D)
Calcium carbonates  (ENT)
  RT Carbonate rocks (E)
     Dolomite(Rock) (T)
     Limestone (DENT)
Cancer (DN)
  RT Malignant neoplasms (T)
     Neoplasms (E)
Canneries (T)
  RT Canning (DENT)
     Food processing (DT)
     Industrial plants (DENT)
Canning  (DENT)
  BT Food processing (DT)
  RT Canneries (T)
Cans (NT)
  BT Containers (DENT)
Capitalized  costs (T)
  BT Cost (E)
     Costs (DNT)
     Expenses (T)
Carbon monoxide poisoning (DNT)
  BT Toxic diseases (NT)
  RT Toxicology (DNT)
Carbon tetrachloride poisoning (N)
  BT Toxic diseases (NT)
  RT Toxicology (DNT)
Carcinogenesis (DE)
  BT Pathogenesis (DENT)
  NT Leukemogenesis (E)
     Cancer  (DN)
  RT Carcinogens (DENT)
     Malignant neoplasms (T)
Carcinogens (DENT)
  RT Cancer (DN)
     Carcinogenesis (DE)
     Malignant neoplasms (T)
     Mutagens (DET)
     Neoplasms (DENT)
Carcinomas (E)
  BT Cancer (DN)
     Diseases (DENT)
     Malignant neoplasms (T)
     Neoplasms (DENT)
Carpooling  (E)
  RT Air pollution abatement (E)
     Fuel conservation (*)
Cascade  impactors (E)
  BT Impactors (NT)
Cat-ox process (E)
  RT Waste  gas recovery (*)
  NOTE: In this process SO2 is changed to
     SOS using V2O5 as a catalyst.
Catalysis (DENT)
Catalysts  (DENT)
Catalytic chamber process (*)
  RT Air pollution control (*)
     Tyco process (E)
     Waste gas recovery (*)
Catalytic reactors (Exhaust systems) (*)
                                                                                             11

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   RT Air pollution control equipment (DT)
     Automobiles (ENT)
     Exhaust systems (DNT)
 Catch basins (T)
   UF Debris basins
   RT Combined sewers (T)
      Sewers (T)
      Storm sewers (T)
 Cation exchanging (T)
   BT Ion exchanging (NT)
   RT Anion exchanging (T)
      Demineralization  (DET)
      Water softening (T)
 Cement industry (*)
   BT Industries (DNT)
 Centrifugal separation (*)
   BT Separation (DNT)
 Centrifuge separation (D)
 Channel improvements  (T)
   RT Channel stabilization (T)
     Channels(Waterways) (DT)
 Channel stabilization (T)
   RT Bank protection(Waterways) (T)
      River regulation (T)
 Channels (Waterways)  (DT)
   BT Waterways (D)
     Waterways(Transportation) (T)
   RT Bank protection(Waterways) (T).
     Dredging (DT)
     Waterways(Watercourses)  (T)
 Chemical analysis (DENT)
   NT Activation analysis (E)
     Chromatographic analysis (DT)
      Colorimetric analysis (DT)
      Electrolytic analysis (T)
      Electrophotometry (T)
      Fat analysis (T)
      Flame photometry (T)
     Gas analysis (DENT)
      Gravimetric analysis (DET)
      Ion selective electrode analysis (E)
      Metallurgical analysis (T)
     Microanalysis (DENT)
      Neutron activation analysis (NT)
      Parrosaniline analysis (*)
      Phenol disulfonic  acid analysis (*)
      Polarographic analysis (DT)
     Qualitative analysis (DNT)
     Quantitative analysis (NT)
     Radioactivation analysis (DT)
     Saltzman analysis (*)
     Spectrochemical analysis (T)
     Spectroscopic analysis (NT)
     Vacuum fusion analysis  (T)
     Volumetric  analysis (DT)
     Water analysis  (DT)
     West Gaeke analysis (*)
   RT Air pollution detection (*)
     Air pollution sampling (*)
     Ash content (T)
     Assaying (DT)
     Atomic spectroscopy (DT)
     Chemical composition (DENT)
     Chemical indicators (DNT)
     Chemical tests (NT)
     Chromatography (DT)
     Detectors (DNT)
     Electron probes  (DT)
     EPA Method 5 (*)
     EPA Method 6 (*)
     EPA Method 7 (*)
     EPA Method 8 (*)
     EPA Method 9 (*)
     EPA Method 10  (*)
     Fluorometers (DT)
     Food analysis (DT)
     Gas chromatography (DENT)
     Gas detectors (DNT)
     Gas sampling (T)
     Infrared spectroscopy (DNT)
     Laser spectroscopy (*)
     Liquid spectroscopy (*)
     Mass spectroscopy (DENT)
     Moisture meters (T)
     Monitors (DNT)
     Nephelometers (DNT)
     pH meters (DT)
     Photoelectric colorimeters (T)
     Photometry (DT)
     Raman  spectroscopy (DNT)
     Soil analysis (T)
     Spectroscopy (DENT)
     Toxic agent alarms (DT)
     Turbidimeters (DT)
     Water pollution  detection  (*)
Chemical attack  (NT)
  RT Air  pollution effects(Materials) (*)
     Corrosion (DENT)
     Degradation (DNT)
     Water pollution  effects(Materials) (*)
Chemical attack (Degradation) (D)
  RT Air  pollution effects(Materials) (*)
     Water pollution  effects(Materials) (*)
Chemical composition (DENT)
  RT Chemical analysis (DENT)
Chemical effluents (E)
  BT Effluents (DNT)
  RT Air  pollution (DENT)
     Gaseous wastes  (E)
     Liquid wastes (DE)
     Radioactive effluents (E)
     Solid wastes  (DE)
     Water pollution  (DENT)
Chemical indicators (DNT)
  RT Chemical analysis (DENT)
Chemical industry (DET)
12

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  BT Industries (DNT)
  NT Drug industry (T)
     Munitions industry (DT)
     Organic chemicals industry (*)
     Petrochemical industry (*)
  RT Fertilizer industry (*)
     Nitric acid plants (*)
     Phosphate acid plants (*)
     Plastics industry (DT)
     Refineries (DT)
     Rubber industry (T)
     Sulfuric acid plants (*)
Chemical oxygen demand (*)
  BT Oxygen demand  (T)
  RT Biochemical oxygen demand (DET)
     Dissolved gases (T)
     Water pollution (DENT)
Chemical plants (T)
  BT Industrial plants (DENT)
  RT Asphalt plants (T)
     Chloralkali plants (*)
     Nitric acid plants (*)
     Refineries (DT)
     Sulfuric acid plants (*)
Chemical reactions (DENT)
  NT Desulfurization (DET)
     Desulfurizing (N)
     Photochemical  reactions (DNT)
     Reduction (Chemistry) (N)
     Reduction(Chemistry) (T)
     Sulfation (DNT)
Chemical reactivity (*)
  RT Atmospheric chemistry (DN)
     Chemical reactions (DENT)
     Photochemical  reactions (DNT)
     Smog (DENT)
Chemical removal (Sewage treatment) (T)
  RT Ammonia stripping (*)
     Denitration (*)
     Denitrification  (*)
     Nitrification (T)
     Physical chemical  treatment (*)
     Precipitation (Chemistry)  (N)
     Precipitation(Chemistry) (T)
     Separation (DNT)
     Sewage filtration  (T)
Chemical removal (Water treatment) (T)
  BT Water treatment  (DENT)
Chemical spills (*)
  RT Hazardous materials (T)
     Hazardous materials spills (*)
     Oil  spills  (DE)
     Water pollution (DENT)
Chemical stabilization (T)
  BT Stabilization (DENT)
  RT Sewage treatment (DET)
     Water pollution control (*)
Chemical tests  (NT)
  RT Chemical analysis (DENT)
Chemical warfare agents (D)
  RT Biological warfare agents (D)
     Demilitarization (DT)
     Liquid waste disposal (*)
     Military chemical agents (T)
     Solid waste disposal (*)
Chemically active fluid bed (*)
  RT CAFB process (E)
     Fluidized bed (E)
     Fluidized bed processes (D)
     Fluidized bed processing (T)
     Fluidized bed processors (DNT)
Chimneys  (DENT)
  RT Smoke stacks (D)
     Stacks  (E)
  NOTE: ERDA does not use this term to express
     smoke stacks.  It limits its use to  pipelike
     vents in the earth.
Chips (NT)
  NT Wood chips (*)
  NT Wood wastes (ET)
Chloralkali  plants  (*)
  BT Chemical plants (T)
     Industrial plants (DENT)
Chlorination (DENT)
  NT Breakpoint chlorination  (*)
  RT Disinfection (DT)
     Sewage treatment (DET)
     Sterilization (DENT)
     Water  pollution control (*)
Chromatographic analysis (DT)
  BT Chemical analysis (DENT)
GAP - USE:
    Climatic Impact  Assessment Program  (*)
Cigarette smoking  (*)
  RT Respiratory diseases (DNT)
Cities (NT)
  RT See under  Urban areas
Citrus fruit  processing  (*)
  BT Food processing (DT)
     Fruit processing (*)
Clarification (T)
Clarifiers (DT)
Classifiers  (NT)
  BT Separators (DNT)
  NT Bowl  classifiers (T)
     Centrifugal classifiers (T)
     Cone classifiers (T)
     Dense  media separators  (T)
     Drag classifiers (T)
     Dry classifiers (T)
     Electrostatic separation (E)
     Electrostatic separators (T)
     Fixed screens (T)
     Hydraulic classifiers (T)
     Jigs (DEN)
     Jigs(Concentrators) (T)
                                                                                                  13

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     Magnetic separation (D)
     Magnetic separators (T)
     Mechanical classifiers (T)
     Nonmechanical classifiers (T)
     Rake classifiers (T)
     Revolving screens (T)
     Sand tanks (T)
     Settlers(Separators) (T)
     Sluicers(Concentrators) (T)
     Solid bowl classifiers  (T)
     Spiral classifiers (T)
     Tables(Concentrators) (T)
     Thickeners(Equipment) (T)
     Vibrating screens (T)
     Wet classifiers (T)
   RT Clarifiers (DT)
     Flotation (DENT)
     Size separation (NT)
     Solid waste disposal (*)
 Classifying (NT)
   BT Separation (DNT)
   RT Solid waste disposal  (*)
     Sorting (DEN)
     Waste processing (E)
 Claus process (E)
   RT Beavon process (E)
     Stretford process (E)
     Waste gas recovery (*)
   NOTE: In this process H2S  and SO2 are
      reacted to form sulfur.
 Clean Air Act (E)
   BT Law (Jurisprudence) (N)
      Law(Jurisprudence) (DT)
      Laws (EN)
      Legislation (DET)
   RT Air pollution (DENT)
      Air  pollution abatement (E)
   NOTE: Enacted in 1973.
 Clean Air Amendments of 1970 (*)
   UF Public law 91-604
   RT Air pollution (DENT)
      Air  pollution abatement (E)
 Clean coke process (E)
   RT Air pollution abatement (E)
     Carbonization (ENT)
     Hydrogenation (DENT)
   DEF Process that combines carbonization
     and hydrogenation reactions to convert
     nonmetallurgical-grade coals to low-
     sulfur metallurgical coke, chemical
     feedstocks, and liquid and  gaseous fuels.
 Clean energy (N)
 Clearcutting  (*)
   RT Forestry (DT)
     Lumbering (T)
 Climatic changes  (T)
 Climatic Impact Assessment Program (*)
   RT Atmospheric chemistry (DN)
     Concorde aircraft (N)
     Supersonic aircraft (DNT)
     Supersonic commercial air transport (N)
     Supersonic transport  (E)
     Supersonic transports (DNT)
Climatology (NT)
  NT Bioclimatology (NT)
     Microclimatology (DNT)
Closed cycle systems (D)
Closed-cycle systems (E)
  RT Closed-cycle cooling  systems (E)
Coagulants (T)
  RT Alums (T)
     Dispersants  (DT)
     Flocculants (T)
     Iron chlorides (ENT)
     Iron sulfate (ET)
     Polyelectrolytes (DT)
Coagulation (DNT)
Coal  (DENT)
  BT Fuels (DENT)
     Fossil fuels (DENT)
  NT Anthracite  (ET)
     Bituminous coal (ET)
     Black coal (E)
     Brown coal  (E)
     Cannel coal  (ET)
     Cellar coal  (T)
     High sulfur  coal (*)
     Lignite  (ET)
     Low sulfur coal (*)
     Semibituminous coal (T)
     Solvent refined coal (E)
     Subbituminous  coal (ET)
     Torbanite (E)
  RT Heating fuels (T)
Coal combustion (*)
  BT Combustion  (DENT)
     Fuel combustion (N)
  RT Fluidized bed combustion (*)
     Fluidized-bed combustion (E)
     Fluidized bed processing (T)
Coal dust (T)
  BT Dust (DNT)
  RT Particles (DENT)
     Particulates (D)
Coal gas (DET)
  BT Fuel gas (E)
Coal gasification (ENT)
Coal gasification plants  (E)
  BT Industrial plants (DENT)
Coal  liquefaction (EN)
Coal  liquefaction plants (E)
  BT  Industrial plants (DENT)
Coal  mines (DT)
Coal  mining (ET)
  BT Mining (ENT)
     Mining engineering (DT)
14

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Coal preparation  (ET)
  RT Benefication (NT)
     Desulfurization (DET)
     Desulfurizing (N)
     Solvent-refined coal (E)
  DEF Grinding, screening, etc., to prepare
     coal for industrial uses.
Coal refuse (*)
  BT Mine wastes (*)
     Solid wastes (DE)
  RT Coal mine spoil (*)
     Spoil (DT)
     Strip mine wastes (*)
Coalescence (DE)
Coalescers (T)
Coalescing  (NT)
Coastal ecology (N)
  BT Ecology (DENT)
Coastal engineering (T)
Coastal regions (DE)
  BT Regions (DNT)
  RT Coastal water (N)
     Coastal waters (E)
     Coasts (DNT)
Coastal topographic features (T)
  BT Topographic features (T)
  NT Bays (Topographic features) (N)
     Bays(Topographic features) (T)
     Coasts (DNT)
     Estuaries  (DENT)
     Gulfs (DNT)
     Inlets (Topography) (N)
     Inlets(Landforms) (T)
     I nlets( Waterways) (DT)
  RT Beaches (DNT)
Coastal zone  management (*)
  RT Coastal Zone Management Act of 1972 (*)
    Fishery Conservation and Management Act of 1976 (*)
Coastal Zone Management Act of 1972 (*)
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence)  (DT)
     Laws (EN)
     Legislation (DET)
  RT Coastal zone management (*)
Coasts (DNT)
  BT Coastal topographic features (T)
     Topographic features (T)
Coating processes  (ET)
  NT Lacquering (T)
     Varnishing (T)
Coking  (ET)
Cold effluents (E)
  RT Thermal pollution (DEN)
    Water pollution (DENT)
     Industrial wastes (ENT)
Cold regions (D)
  BT Regions (DNT)
  RT Antarctic regions (DENT)
     Arctic  regions (DENT)
     Polar regions (DENT)
Collecting methods (DT)
  RT Hauling (NT)
     Materials handling (DENT)
Collection (DNT)
Color separation  (DT)
  BT Separation (DNT)
  RT Solid waste disposal (*)
     Sorting (DEN)
Colorimetric analysis  (DT)
  BT Chemical analysis (DENT)
  RT Spectroscopic analysis (NT)
Colorimetry (DENT)
Combined cycle electric power generation (*)
  RT Cogas power systems (*)
Combined  cycles  (E)
  BT Thermodynamic cycles (DENT)
Combined  sewers (T)
  BT Sewers (T)
  RT Storm sewers (T)
     Storm water run off (*)
Combined-cycle power  plants (E)
  UF Combined gas and  steam cycle power
       plants
  BT Thermal power plants (DET)
  RT Combined cycles (E)
  NOTE:  Prior to March  1976, the descriptors
      combined cycles  and  fossil-fuel
     power  plants  or thermal power plants
    were used by  ERDA  for indexing this concept.
Combustion (DENT)
  UF  Burning
  NT Coal combustion  (*)
     Fluidized bed combustion (*)
     Fluidized-bed  combustion  (E)
     Fuel  combustion (EN)
     Gas  combustion process (E)
     In situ combustion (T)
     In-situ  combustion (E)
     Reverse combustion  (E)
  RT Air  fuel ratio (*)
     Burning rate (DNT)
     Burning time  (NT)
Combustion chambers (DENT)
Combustion control (NT)
Combustion efficiency (NT)
  RT Energy conversion efficiency (N)
Combustion modification (*)
  RT Air  pollution  abatement (E)
     Air pollution  control (*)
Combustion products (DENT)
  RT Air  pollution  (DENT)
  NOTE:  This term is often used to express
     air pollution  from stationary sources.
     For pollution  from moving sources,
      exhaust gases is used.
Combustion properties  (E)
                                                                                              15

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   RT Calorific value (ET)
Cominco process (*)
   RT Air pollution control (*)
   DEF  Ammonia absorption system used in
     air pollution control.
Commercial buildings (ET)
   BT Buildings (DENT)
   RT Service stations (*)
Commercial sector (*)
Comminution (DENT)
   NT Crushing (DENT)
     Grinding (Comminution) (N)
     Grinding(Comminution) (T)
     Shredding (DNT)
   RT Solid  waste disposal  (*)
     Waste  processing (E)
Communities (DENT)
   RT Municipalities (DT)
     Neighborhoods (T)
     Suburban areas (N)
     Urban  areas (DET)
Community development (T)
   RT Economic development (ENT)
     Land development (T)
     Regional planning (NT)
     River basin  development (T)
     Urban  development (NT)
     Urban  renewal (T)
     Urbanization (T)
Community relations (DT)
   RT Public relations (DENT)
Compacting (DENT)
   RT High pressure compressors (DT)
Compactors (DN)
Competition (T)
Compliance (E)
   NT Standards compliance (*)
   RT Law enforcement (DT)
     Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
Composting (E)
   RT Solid  waste disposal  (*)
     Waste  processing (E)
Composts  (T)
   RT Biodegradation (E)
     Biodeterioration (DT)
     Solid waste disposal (*)
Comprehensive planning (*)
Compressor noise (DT)
   BT Noise (Sound)  (N)
     Noise(Sound) (DT)
Computer programs (DENT)
   NT  Nexus computer code (*)
    Symap  computer program (*)
   NOTE: NTIS uses this term only when an actual
     program is listed in a  report.
Computerized simulation (DNT)
    RT Mathematical models (DENT)
Concentration (Composition)  (N)
Concentration (Composition) (DT)
  RT Atmospheric composition (NT)
Concorde aircraft  (N)
  BT Aircraft (DENT)
    Supersonic  aircraft (DNT)
  RT Supersonic transport (ET)
    Supersonic transports (DN)
Concrete plants (T)
  BT Industrial plants (DENT)
Condensation nuclei (DT)
Confined environments (DT)
  RT Atmospheric contamination control (*)
    Indoor air pollution (D)
    Mines(Excavations) (DT)
    Spacecraft  (NT)
    Submarines (ENT)
Connate water (ET)
  BT Ground water (DENT)
Conservation (DNT)
  NT Energy conservation (DEN)
    Soil conservation (T)
    Water conservation (DT)
  RT Water reclamation (DNT)
Container board (T)
  BT Fiberboard (D)
    Fiberboards (T)
    Packaging materials (DT)
    Paper (DE)
    Paperboards (T)
    Papers (NT)
  RT Boxboard (T)
  NOTE: Used in corrugated shipping cartons.
Container deposits (*)
Containers (DENT)
  NT Aerosol spray containers (*)
    Bags (DENT)
    Bottles (DNT)
    Boxes (Containers) (N)
    Boxes(Containers) (T)
    Disposable  containers (*)
    Plastic bags (*)
Continental shelf  (E)
Continental shelves (DNT)
  BT Topographic features (T)
Contingency planning (*)
  BT Planning (DENT)
  RT Air pollution  episodes (*)
    Oil spills (DE)
    Regional planning (NT)
    Urban planning (DNT)
Continuous sampling (T)
  BT Sampling (DENT)
  RT Air pollution  monitoring (*)
    Air pollution sampling (*)
    Water pollution sampling (*)
Cooking liquors(Pulping) (T)
16

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  NT Black liquors (T)
     Spent sulfite liquors (T)
     Sulfite cooking liquors (T)
     White liquors (T)
  RT Chemical pulping (T)
     Spent liquors(Pulping) (T)
Cooling systems (ENT)
  NT Closed  cycles (N)
     Closed-cycle cooling systems  (E)
     Condenser cooling system* "^
     Coolant loops (E)
     Coolants (NT)
     Once-through cooling systems (E)
     Open-cycle cooling cystems (E)
     Reactor  cooling systems (E)
  RT Cooling (ENT)
     Cooling  ponds (E)
     Cooling  towers (DET)
     District cooling (E)
     Liquid cooling (NT)
     Spray cooling (E)
Cooling towers (DET)
  NT Mechanical draft cooling towers (E)
     Natural  draft cooling towers (E)
  RT Cooling systems (ENT)
     Thermal  pollution (DEN)
     Water pollution control (*)
Cooling water (T)
  RT Industrial  water (T)
Copper industry (*)
  BT Metal industry (ET)
Corrosive gases  (DT)
  RT Hazardous materials (T)
Corrosive liquids (DT) •
  RT Hazardous materials (T)
Cost effectiveness  (DNT)
Cost estimates (DNT)
Costs (DN)
  NT Capitalized costs (T)
     Construction costs (T)
     Engineering  costs (T)
     Fixed costs (T)
     Incremental costs (T)
     Operating costs (T)
     Water costs  (T)
  RT Container deposits (*)
     Expenses (T)
     Fines(charges) (*)
     Sewer surcharges (*)
     Tax surcharges (*)
     Taxes (DET)
     Water pollution taxes(Charges) (*)
     Water rates (*)
County government  (*)
  RT Local government (T)
County planning (*)
  BT Planning (DENT)
  RT Regional planning (NT)
Cross flow filtration  (*)
  BT Filtration (DENT)
     Sewage  filtration (T)
Crude oil (DENT)
  BT Fossil fuels (DENT)
     Oils (DENT)
     Petroleum (E)
  NT Attic oil (T)
     Cellar oil (T)
     Mixed base crudes (T)
     Naphthalene  base crudes (T)
     Paraffin  base crudes (T)
     Sour crudes (ET)
     Sweet crudes (T)
Crushing (DENT)
  BT Comminution (DENT)
  RT Waste processing (E)
Crustacea (DT)
  BT Aquatic  animals (DT)
     Shellfish  (DT)
  NT Barnacles (DT)
     Crabs (DNT)
     Crayfishes (T)
     Crustaceans (E)
     Lobster (D)
     Lobsters  (ET)
     Shrimp (DE)
     Shrimps  (T)
Crustaceans  (E)
Cycling nutrients (*)
  BT Nutrients (DENT)
Cyclone  separators (DET)
  BT Separators (DNT)
  RT Air  pollution control equipment (DT)
Dairy industry (*)
  BT Industries (DNT)
Dairy products (DT)
  RT Whey (*)
Dams  (DENT)
Data acquisition  (DENT)
Data retrieval (NT)
  RT Air  quality data  (*)
     Information  retrieval (DENT)
Deaeration (DT)
  BT Degasification (D)
     Degassing (ENT)
  RT Aeration (DNT)
Deashing (E)
  RT Ashes (DENT)
     Cleaning (DENT)
Decomposition (DENT)
  NT Biodegradation (E)
     Biodeterioration (DT)
Deep water oil terminals  (E)
  BT Deepwater terminals (N)
     Marine terminals (DT)
  RT Supertankers (*)
     Tanker terminals  (N)
                                                                                               17

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     Terminal facilities (NT)
 Deepwater terminals (N)
   RT Offshore energy sources (N)
     Tanker terminals (N)
 Degassing  (ENT)
   BT Separation  (DNT)
   NT Deaeration (DT)
   RT Aeration (DNT)
     Degasification (D)
 Degradation (DNT)
   NT Chemical attack(Degradation) (D)
   RT Air pollution effects(Materials) (*)
     Deterioration (DNT)
     Soiling index (*)
     Water pollution effects(Materials) (*)
 Deicers (NT)
   RT Deicing (NT)
     Deicing systems (D)
     Highways (DENT)
 Deicing  (NT)
   RT Highways (DENT)
     Ice  prevention (DNT)
 Demilitarization (DT)
   RT Biological warfare agents (D)
     Chemical warfare agents (D)
     Liquid  waste disposal (*)
     Military chemical  agents (*)
     Solid waste disposal (*)
 Demineralizers (DET)
 Demineralizing  (NT)
   RT Chemical removal(Water treatment)  (T)
     Feedwater treatment (T)
     Ion  exchanging (NT)
     Osmosis (DENT)
     Water hardness (*)
     Water softening (T)
     Water treatment (DENT)
 Denitration  (ET)
 Denitrification (*)
   RT Ammonia stripping (*)
 Desalting  (T)
   RT Desalination (DE)
     Desalinization (N)
     Osmosis (DENT)
     Reverse osmosis desalination (*)
     Water treatment (DENT)
 Deserts (DENT)
   BT Land  (NT)
   NT Gobi desert (N)
     Libyan desert (N)
     Mojave desert CA (N)
 Destratification  (*)
   RT Lakes (DENT)
     Reservoirs (DNT)
     Stratification (DENT)
     Thermal stratification (*)
 Destructive distillation (ET)
   BT Distillation  (DENT)
  RT Decomposition (DENT)
     Pyrolysis (DENT)
Destrugas process  (E)
  BT Waste processing (E)
  DEF Gasification in  complete absence of air
     with  indirect heating of the pyrolysis
     chamber with char and pyrolysis gas (fuel
     gas)  as the only  products.
Desulfurization  (DET)
  BT Chemical reactions (DENT)
     Coal gasification (DET)
     Coal liquefaction (EN)
  RT Coal preparation (ET)
  NOTE: NTIS does  not use this  term to express
     sulfur removal  for air pollution control
     after or during combustion.  It is used
    only when sulfur is being removed from a
     fuel before  it is combusted.
Desulfurizing (N)
  BT Chemical reactions (DENT)
Detection (DNT)
  NT Acoustic detection (DT)
Detectors (DNT)
  NT Acoustic detectors (DT)
     Airborne detectors (T)
     Densitometers (*)
     Gas detectors (DNT)
     Impactors (NT)
     Infrared detectors (DNT)
    Monitors (DNT)
     Photometers (DENT)
     Piezoelectric  gages (DNT)
     Radiometers (DENT)
    Samplers (DENT)
    Smokemeters (*)
    Toxic agent alarms (DT)
    Transmissometers  (DNT)
    Warning systems  (DNT)
Detergents (DENT)
Deterioration  (DNT)
  RT Air pollution effects(Materials) (*)
    Degradation (DNT)
     Soiling index (*)
     Water pollution effects(Materials) (*)
Dewatering (T)
  RT Sewage treatment (DET)
     Sludge disposal (T)
     Sludge treatment (*)
Diesel engine exhaust (*)
  BT Exhaust emissions (T)
    Exhaust gases (DENT)
  RT Diesel engines (DENT)
Diesel engines (DENT)
  BT Engines (DENT)
Diesel fuels (DENT)
  BT Fuels (DENT)
Diffusion  modeling (*)
Digestion (E)
18

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  NT Aerobic digestion (E)
     Anaerobic digestion  (E)
  RT Biogas process (E)
Digestion (Biology)  (DT)
Digestion (Decomposition)  (T)
  RT Decomposition (DENT)
     Digesters (T)
Disinfection (DT)
  RT Chlorination (DENT)
     Irradiation (DET)
     Ionizing radiation (DNT)
     Microwave sterilization (*)
     Sterilization (DENT)
Dispersants (DT)
  RT Coagulants (T)
     Flocculants (T)
Dispersing (DNT)
  RT Emulsification (ET)
Disposable containers (*)
  BT'Containers (DENT)
  RT Beverage containers (*)
     Bottles  (DNT)
Dissolved gases (T)
  RT Biochemical oxygen  demand (DET)
     Chemical oxygen demand (*)
Dis' olved organic matter (T)
Dissolved oxygen (T)
  RT Dissolved gases (T)
Dissolved solids (*)
Dissolving (DNT)
Distillation  (DENT)
  NT Destructive distillation (ET)
Distilleries (T)
  RT Industrial plants (DfcNT)
Dolomite (DE)
Dolomite (Mineral)  (N)
  RT Limestone (DENT)
Dolomite (Mineral)  (T)
Dolomite (Rock)  (T)
  BT Carbonate  rocks (ET)
  RT Calcium carbonates (ENT)
     Limestone (DENT)
Domestic wastes (*)
  RT Solid wastes (DE)
     Water pollution (DENT)
Dosage (DNT)
  NT Genetically significant dose (E)
     Integral doses (E)
     Lethal dosage (DT)
     Lethal doses (E)
     Lethal radiation dose (E)
     Radiation dosage (DNT)
     Radiation doses (E)
  RT Dose rate (DT)
     Dose rates (E)
     Doses (E)
     Exposure (NT)
Dosemeters (E)
Dosimeters (DNT)
  NT Chemical dosemeters (E)
    Chemical dosimeters (T)
    Foil  dosimeters (T)
    Luminescent dosemeters (E)
    Luminescent dosimeters (DT)
    Photographic dosimeters (DT)
    Radioactivant dosimeters (T)
    Threshold detectors (E)
    Threshold detectors (Dosimeters) (N)
    Threshold detectors(Dosimeters) (T)
  RT Dosage (DNT)
    Radiation counters (NT)
    Radiation measuring instruments (DNT)
  DEF Devices for measuring time integrated
    dose but not necessarily radioactivity.
Drainage (DNT)
  NT Mine acid drainage (*)
    Storm water drainage (*)
    Subsurface drainage (T)
    Surface drainage (T)
  RT Runoff (DT)
    Storm water runoff (*)
    Surface water runoff (T)
    Tile  drains  (*)
Drainage basins - USE:
    Watersheds (DENT)
Dredge spoil (*)
  BT Spoil (DT)
  RT Dredging (DT)
    Solid wastes (DE)
Dredging (DT)
Drinking water (DE)
  RT Potable water (NT)
Drought  (N)
Droughts (T)
  RT Arid regions (*)
    Climatology (NT)
    Dust storms (DNT)
    Hydrology  (DENT)
    Water consumption (NT)
    Water shortage (*)
Drug industry (DT)
  BT Chemical industry (DET)
    Industries (DNT)
Dry cleaning (DT)
Dry methods (*)
  RT Wet methods (*)
Dual-purpose power  plants (E)
  BT Power plants  (EN)
  RT Desalination (DE)
    District heating (ET)
    Power generation (E)
    Process heat (E)
Dunes (DNT)
  BT Topographic features (T)
  RT Beaches (DNT)
    Deserts (DENT)
                                                                                               19

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 Dust (DNT)
   NT Coal dust (T)
     Flue dust (T)
   RT Particle resuspensions (E)
   RT Particles (DENT)
     Particulates (D)
 Dust collectors  (ENT)
   BT Separators (DNT)
   RT Air filters (DENT)
     Air pollution control  equipment (*)
     Air washers (T)
     Dust control (DT)
 Dust control (DT)
   RT Air pollution control (*)
 Dust filters (T)
   BT Separators (DNT)
   RT Air cleaners (DT)
     Air filters (DENT)
 Dust storms (DNT)
   RT Air pollution (DENT)
     Dust (DNT)
     Dust control (DT)
     Particles  (DENT)
 Dusts (E)
 Ear diseases  (T)
   RT Auditory defects (DNT)
     Ultrasonic  injuries (T)
 Ear protectors  (DNT)
   RT Industrial medicine (T)
     Occupational health and  safety (*)
 Earth atmosphere (ENT)
 Earth environment (N)
 Earth fills (DT)
   RT Backfills (DT)
     Sanitary landfills (E)
     Solid waste disposal (*)
 Earth hydrosphere (T)
 Earth resources (N)
   BT Resources (DENT)
   RT Natural  resources (DT)
 Ecological concentration (E)
   NT Radioecological concentration (E)
   RT Bioaccumulation (*)
     Biological accumulation (E)
 Ecological succession (T)
   BT Ecology (DENT)
 Ecology (DENT)
   NT Animal ecology (T)
     Coastal ecology  (N)
     Human ecology (T)
     Plant ecology (T)
     Radioecology (ET)
   RT Acclimatization (DNT)
     Adaptation (DNT)
     Aquatic ecosystems (E)
     Biological adaptation (E)
     Biological productivity (T)
     Biosphere (EN)
     Ecological succession (T)
     Ecosystems (DEN)
     Food chain (D)
     Food chains (ET)
     Life cycles (DT)
     Primary biological productivity (T)
     Radioecological concentration (E)
     Sinks(Biosphere) (*)
     Terrestrial ecosystems (E)
Economic analysis (DNT)
  RT Air pollution economics (*)
     Water pollution  economics (*)
Economic development  (ENT)
  RT Community development (T)
     Urban development (NT)
Economic factors (NT)
  NT Socio-economic factors (E)
  RT Financial incentives (E)
Economic forecasting (T)
  RT Forecasting (DENT)
     Trends (DNT)
Economic impact (*)
Economic models (DT)
Economic surveys (T)
Ecosystems  (DEN)
  NT Aquatic ecosystems  (E)
     Terrestrial ecosystems (E)
  RT Biosphere (EN)
     Ecology (DENT)
     Mineral cycling  (E)
Effective perceived  noise levels  (N)
  BT Noise levels (*)
Effluents  (DNT)
  NT Chemical effluents (E)
     Cold effluents (E)
     Sewage treatment effluents (*)
     Thermal effluents (E)
  RT Air pollution (DENT)
     Water pollution  (DENT)
  NOTE: Because of the broadness of this
     term, it is preferred  that a narrower
     one be used.
EGR systems - USE:
     Exhaust recirculation systems  (E)
Electric automobiles (DT)
  BT Electric-powered vehicles  (E)
     Electric vehicles  (T)
  RT Automobiles (ENT)
Electric motor noise (DT)
  RT Motor noise (T)
Electric power generation (T)
  BT Power generation (E)
     Power systems (E)
  NT Diesel electric power generation  (T)
     Direct electric power generation (T)
     Cogas power systems (*)
     Closed-cycle power generation (E)
    Combined cycle  electric power generation (*
20

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     Electrochemical power generation (T)
     Electrohydrodynamic power generation (T)
     Gas turbine power generation (T)
     Hydroelectric power generation (T)
    Magnetohydrodynamic power generation (T)
     Mobile power generation (T)
     Nuclear electric power generation (NT)
     Precise power generation (T)
     Solar  power generation  (T)
     Standby power generation (T)
     Steam electric power generation (T)
     Thermionic power generation (DNT)
     Thermoelectric power generation (DNT)
     Thermonuclear  power generation (NT)
     Tidal power generation (T)
     Uninterruptible power generation (DT)
     Wind  power generation  (T)
  RT Electric power production (D)
Electric power (Slants  (DNT)
  BT Power plants (DNT)
     Auxiliary power plants (DT)
  NT Coal fired power plants (*)
     Combined-cycle power plants (E)
     Fossil-fuel  power plants  (E)
     Fuel cell power plants (E)
     Geothermal power plants (E)
     Hydroelectric power plants (E)
     Hydroelectric power stations (N)
     MHD power plants (E)
     Nuclear power plants (DENT)
     Offshore nuclear power  plants (E)
     Orbital  solar power plants (E)
     Solar  power plants  (E)
     Solar  sea power plants (E)
     Solar  thermal power plants (E)
     Steam power plants (D)
     Thermal power plants (DET)
     Tidal  power plants (ET)
     Underground nuclear stations (E)
     Underwater nuclear power plants (*)
Electric power production (D)
  BT Power generation (E)
  NT See under Electric power generation
  RT Electric  power generation (T)
Electric power systems - USE:
     Power systems  (E)
Electric trucks  (T)
  BT Electric  vehicles (T)
     Trucks (DNT)
Electric utilities (ET)
  BT Public utilities (DET)
     Utilities (T)
Electric vehicles (T)
  BT Ground vehicles (DT)
  NT Electric automobiles (T)
     Electric trucks (T)
  RT Automobiles (ENT)
     Electric locomotives (T)
     Electric-powered vehicles (E)
     Hybrid  electric-powered vehicles (E)
Electric-powered vehicles (E)
  RT Electric automobiles (T)
     Electric  batteries (DENT)
     Electric  trucks (T)
     Electric  vehicles (T)
     Fuel cells (DENT)
     Hybrid  electric-powered vehicles (E)
Electrodes (DENT)
  NT Ion selective electrodes (DN)
Electromagnetic radiation hazards (*)
  BT Hazards (DENT)
     Radiation hazards (DENT)
  NT Laser injuries (*)
     Microwave radiation hazards (*)
     Microwave radiation leakage (*)
     Radiofrequency radiation hazards (*)
     X  ray radiation leakage (*)
  RT Ionizing radiation (DNT)
Electroplating (DENT)
  BT Metal finishing (NT)
     Plating  (DENT)
Electrostatic precipitation (DT)
  RT Air  pollution control (*)
Electrostatic precipitators (ENT)
  RT Air  pollution control equipment (DT)
Emergency  plan  (E)
Emergency planning (*)
Emission factors  (*)
Emphysema (DNT)
  BT Respiratory diseases (DNT)
Emulsification (ET)
  RT Coagulation (DNT)
     Dispersing (T)
     Flocculation (ET)
Endangered species (E)
  BT Animals (DENT)
     Plants (E)
     Plants (Botany) (N)
     Plants(Botany) (DT)
  DEF Species in danger of extinction in
     all or a significant  part of its range.
Energy (DENT)
  NT Clean energy (N)
     Commercial energy (N)
     Electric  power (DENT)
     Geothermal energy (E)
     Hydrogen-based energy (N)
     Industrial energy (N)
     Nuclear energy (DENT)
     Solar energy (DENT)
     Thermal energy (N)
     Thermonuclear energy (DT)
     Transportation energy (N)
     Waterwave  energy  (N)
Energy Policy and Conservation  Act (*)
  UF Public  Law 94-163
                                                                                                21

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  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation  (DET)
  RT Energy conservation (DEN)
Energy conservation (DEN)
  RT Energy Policy and Conservation Act (*)
     Energy source conservation (*)
     Fuel economy (E)
     Mius (E)
     Modular integrated utility systems (*)
     Resource conservation (E)
     Thermal efficiency (ET)
     Thermodynamic efficiency (N)
     Total energy systems (E)
Energy consumption (DEN)
  BT Consumption (DNT)
  NT Electric power  consumption (*)
     Fuel consumption (DENT)
     Heat consumption (*)
  RT Commercial energy (N)
     Consumption rate (T)
     Consumption rates (E)
     Electric power demand (T)
     Energy  use (*)
     Fuel demand (*)
     Off peak energy use (*)
     Net energy (E)
Energy crisis (*)
Energy demand  (E)
  NT Electric power  demand (T)
     Fuel demand (*)
  RT Demand factors (E)
     Electric  power consumption (*)
     Energy cosumption (DEN)
     Energy use (*)
     Fuel consumption (DENT)
     Off peak energy use (*)
     Peak-load  pricing (E)
Energy forecasts (*)
Energy management (D)
  NT Fuel management (E)
  RT Energy policy (EN)
     Resource allocation  (*)
Energy models  (E)
Energy parks (E)
  NT Nuclear agro industrial complexes (*)
     Nuclear parks (E)
Energy policy (EN)
  RT Energy management (D)
     Fuel management (E)
     Government  policies (ET)
     Project  Independence  (E)
     Resource allocation  (N)
Energy requirements (N)
  RT Electric power consumption (*)
     Electric power demand (T)
     Energy consumption (DEN)
     Energy demand (E)
     Fuel consumption (DENT)
     Fuel demand (*)
Energy shortages (E)
  BT Shortages (DT)
  NT Fuel shortages (D)
  RT Brownouts (DE)
     Electric power failures (T)
     Outages (T)
Energy source conservation (*)
  BT Energy conservation (DEN)
  RT Energy management (D)
     Energy policy (EN)
     Fuel management (E)
     Resource allocation (N)
Enforcement  (E)
  RT Law enforcement (DT)
     Law (Jurisprudence)  (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legal aspects (E)
     Pollution regulations (E)
     Regulations (DENT)
Engine mufflers  (DT)
  BT Mufflers  (DNT)
  RT Noise reduction (DNT)
Engine noise (DNT)
  BT Noise (Sound) (N)
     Noise(Sound) (DT)
  NT Jet engine noise (DT)
Engine warm up (*)
  RT Automobile  engines (NT)
     Motor vehicle engines (T)
Engines (DENT)
  NT Aircraft engines (DNT)
     Arc jet engines (DT)
     Automobile engines (NT)
     CVCC engines (*)
     Diesel engines (DENT)
     External combustion  engines (DNT)
     Four stroke cycle engines  (T)
     Free piston engines (T)
     Gas engines  (T)
     Gas turbine  engines (DNT)
     Gasoline engines (T)
     Heat engines (E)
     Helicopter engines (DNT)
     Hydroduct engines (DT)
     Hydrojet engines (DT)
     Hydropulse engines (DT)
     Internal combustion engines (ENT)
     Jet engines (DNT)
     Marine engines (DT)
     Motor vehicle engines (T)
     Multifuel engines (T)
     Outboard engines (T)
     Piston engines (DNT)
     Pulsed jet engines (N)
22

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     Pulsejet engines (DNT)
     Pumping engines (T)
     Ramjet engines (DENT)
     Rankine  cycle engines (E)
     Reciprocating engines (DT)
     Recombination ramjet engines (DT)
     Rotary combustion engines (T)
     Rotary engines (E)
     Rotary piston engines (T)
     Small engines (T)
     Solid propellent rocket engines (NT)
     Spark ignition engines (ET)
     Stationary engines  (T)
     Steam engines (DT)
     Stirling cycle engines (T)
     Stratified charge engines (T)
     Supersonic combustion ramjet engines (DNT)
     Test engines (T)
     Tractor engines (DT)
     Truck engines (T)
     Turbine engines (N)
     Turbofan engines (DNT)
     Turbojet engines (ENT)
     Turboprop engines  (DNT)
     Turboramjet engines (DNT)
     Two  stroke cycle engines (T)
     Wankel engines (EN)
  DEF These are machines with self-containing
     power sources for continuous operation.
     For machines utilizing external power
     sources for normal  operation, see  Motors
Entrainment (DENT)
Environment effects (N)
Environment management  (N)
  BT Management (DENT)
  RT Conservation (DNT)
     Land management  (N)
     Man  environment interactions (N)
     Resources management (N)
     Water management (N)
Environment models (N)
  RT Atmospheric models (NT)
     Mathematical  models (DENT)
Environment pollution  (N)
  BT Pollution (DENT)
  NT See  under pollution
Environment protection (N)
Environmental chemical  substitutes (*)
  BT Substitutes (DNT)
  RT Environmental persistence (*)
  DEF  Chemicals used to replace others which
     have  a more harmful  effect on the environment.
Environmental effects  (E)
  RT Environmental  impacts (*)
  NOTE: NTIS uses this term only when the actual
     effects to the  environment are discussed.
Environmental exposure  pathway (E)
  RT Ecosystems (DEN)
     Food chains (ET)
     Path of pollutants (*)
Environmental health (*)
  RT Air pollution effects(Humans) (*)
     Altitude sickness (T)
     Cold  stress (T)
     Heat  stress (T)
     Hyperbaric oxygenation (T)
     Industrial  medicine (T)
     Occupational safety and health (T)
     Public health (T)
     Radiation effects  (T)
     Sanitary engineering (T)
     Stress(Physiology) (T)
     Stress(Psychology) (T)
     Water pollution effects(Humans) (*)
  DEF Used when discussing the adverse effects
    on human  health from man-made or natural
     environments.  Includes  effects from all
     forms of pollution, extreme natural
     environments, or  industrial  environments.
Environmental impact assessments (*)
  BT Assessments (ENT)
Environmental impact statements (DE)
  NOTE: These are special environmental
     reviews required for all  major  Federal
     projects that might affect the
     environment. After July 1976, NTIS
     noted whether a report was a final or draft
     statement.
Environmental impact statements-draft (*)
Environmental impact statements-final  (*)
Environmental impacts (*)
  RT Environmental effects (E)
Environmental issues (*)
Environmental legislation - USE:
     Legislation (DET)
Environmental monitoring  (N)
  BT Monitoring (DET)
  RT Air pollution sampling (*)
     Water pollution sampling (*)
Environmental persistence  (*)
  RT Absorption(Biology) (T)
     Bioaccumulation (*)
     Biodeterioration (DT)
     Biologically stable substances (*)
     Pesticide residues (*)
     Residues (DENT)
     Soil  chemistry (T)
     Water chemistry (DET)
Environmental protection (D)
  RT Air pollution abatement (T)
     Air pollution control  (*)
     Noise reduction (DNT)
     Pollution control  (N)
     Solid waste disposal (*)
     Water pollution abatement (DE)
     Water pollution control (*)
                                                                                                23

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 Environmental Protection Agency (*)
   BT Federal agencies (*)
     Government agencies (*)
   RT Pollution control agencies (E)
 Environmental quality (N)
   RT Air quality (DEN)
     Water quality (DENT)
 Environmental research  (*)
 Environmental surveys (NT)
   BT Surveys (DNT)
   RT Air pollution (DENT)
      Reactor siting (E)
      Site selection (DE)
      Site surveys  (T)
      Solid  wastes (DE)
     Water pollution (DENT)
 Environmental transport (*)
   BT Mass transfer (DENT)
   NT Radionuclide migration (*)
   RT Ecological concentration (E)
      Environment (E)
      Radioecological concentation (E)
 Environments (DNT)
 Enzyme technology  (*)
   BT Enzymes (DENT)
   RT Immobilized enzymes (*)
 EPA  Method 5  (*)
   RT Air pollution detection (*)
     Chemical analysis (DENT)
 EPA  Method 6  (*)
 EPA  Method 7  (*)
   RT Air pollution detection
      Nitrogen oxides (DENT)
      Phenol disulfonic acid analysis (*)
 EPA  Method 8  (*)
 EPA  Method 9  (*)
 EPA  Method 10 (*)
 Epidemiology (DENT)
 Erosion (DENT)
   NT Beach erosion (DT)
      Piping(Erosion) (T)
      Soil erosion  (DNT)
      Stream erosion (T)
      Water erosion  (T)
     Wind  erosion (NT)
 Erosion control  (T)
   RT Erosion (DENT)
     Soil conservation (T)
     Soil erosion  (DNT)
      Stream erosion (T)
 Estuaries (DENT)
   BT Coastal topographic features (T)
 Eutrophication (DEN)
   RT Ecology (DENT)
     Ecosystems (DEN)
     Limnology (DENT)
     Trophic level (*)
     Water pollution (DENT)
Evaporation control (T)
  RT Air pollution control (*)
     Automotive fuels (DET)
     Fuel storage (T)
Exhaust emissions  (T)
  RT Air pollution (DENT)
     Potential emissions (*)
  NOTE: This term is used by  NTIS to
     designate combustion products
     emitted to  the air from moving
     sources.
Exhaust gases  (DENT)
  NT Aircraft exhaust (D)
     Automobile exhaust (D)
     Diesel  engine exhaust (*)
     Jet engine  exhaust (D)
     Jet exhaust (N)
     Rocket exhaust  (DNT)
  RT Air pollution (DENT)
  NOTE: This term is used by NTIS to designate
    combustion gases from moving sources;
     i.e. automobiles, aircraft, etc.
Exhaust noise  (*)
  BT Noise  (Sound) (N)
     Noise(Sound) (DT)
     Sound levels (*)
Exhaust recirculation systems (E)
  UF EGR systems (E)
  RT Air pollution control equipment (DT)
     Automobile exhaust (D)
     Automobiles (ENT)
     Exhaust gases (DENT)
Exhaust systems (DNT)
  RT Afterburners (DNT)
     Air pollution control equipment (DT)
     Catalytic converters (T)
     Catalytic reactors(Exhaust systems) (*)
     Thermal reactors(Exhaust systems)  (*)
Expenses (T)
  RT Costs (DNT)
     Fines(Charges) (*)
     Taxes (DET)
Exposure (NT)
  NT Maximum  permissible exposure (*)
     Noise exposure (*)
  RT Dosage (DNT)
     Dose rate  (DT)
     Dose rates (N)
     Industrial medicine (DET)
     Lethal dosage (DT)
     Lethal  doses (N)
     Occupational health and  safety (*)
     Radiation tolerance (DNT)
Eye irritants (*)
Fabric filters (*)
  BT Filters (DENT)
  RT Air pollution control (*)
Fallout  (DNT)
24

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  UF Radioactive fallout
  RT Air pollution (DENT)
    Radioactive contaminants (NT)
    Radiation effects (DENT)
    Radiation hazards (DENT)
Farm  management (T)
Farm  processing (T)
  DEF  Production and harvesting of food
    products and other farming operations.
Farmlands (N)
  BT Lands (*)
Farms (T)
  RT Agricultural wastes (ET)
    Barnlot wastes (*)
     Feedlot wastes (*)
     Hog houses (T)
    Manure (*)
    Organic wastes (*)
    Runoff (DT)
Federal Aid Highway Act (*)
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation (DET)
  RT Noise pollution  (DN)
    Transportation noise (*)
  NOTE: Enacted in 1973
Federal Environmental Pesticide Control Act (*)
  UF Fepca
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation (DET)
  RT Pesticides  (DENT)'
Federal Insecticide,  Fungicide, and
       Rodenticide Act (*)
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation (DET)
  RT Fungicides (DENT)
    Pesticides (DENT)
  NOTE: Enacted in 1972
Federal Water Pollution Control Act
      Amendments of 1972 (*)
  UF Public Law 92-500
  BT Law (Jurisprudence) (N)
    Law(Jurisprudence) (DT)
    Laws (EN)
    Legislation (DET)
  RT Best technology (*)
    Water pollution  (DENT)
Federal Water Pollution Control Act (E)
  BT Law (Jurisprudence) (N)
    Law(Jurisprudence) (DT)
    Laws (EN)
    Legislation (DET)
Federal agencies (*)
  RT Bureau of Land Management (*)
    Environmental Protection Agency (*)
    Government agencies (*)
    Pollution control agencies  (E)
Federal driving cycle - USE:
    Federal test procedure (E)
Federal test procedure  (E)
  UF Federal driving cycle (E)
  RT Air pollution control (*)
    Automobile exhaust (D)
    Exhaust gases (DENT)
    Fuel economy (ET)
Feed and grain industry (*)
  BT Industries (DNT)
Feeding habits (T)
  BT Habits (DNT)
  RT Animal behavior  (T)
Feeding stuffs (T)
  RT Animal feeds (E)
    High protein  supplements (*)
    Single cell protein (E)
    Synthetic  foods (*)
Feedlot wastes (*)
  RT Agricultural wastes (ET)
    Animal  wastes  (*)
    Barnlot wastes (*)
    Manure (*)
Feedlots (*)
Feedwater (ET)
  BT Industrial water (T)
    Water (DENT)
  NT Boiler feedwater (*)
Feedwater treatment (T)
  BT Water treatment  (DENT)
  RT Deaeration (DT)
    Demineralizing (NT)
    Desalting (T)
    Ion exchanging (NT)
    pH control (T)
    Water softening (T)
FEPCA - USE:
  Federal Environmental Pesticide Control Act (*)
Fertilization (N)
Fertilizer industry (*)
  BT Industries (DNT)
  NT Phosphate fertilizer  industry (*)
  RT Chemical industry (DET)
Fertilizers (DENT)
Fertilizing (T)
Fiberglass industry (*)
  BT Industries (DNT)
Field tests (DT)
Filtration (DENT)
  BT Separation (DNT)
  NT Centrifugal  filtration (T)
    Cross flow filtration  (*)
    Pressure filtration (T)
    Sand filtration (T)
                                                                                               25

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     Sewage filtration (T)
     Trickling filtration  (T)
     Vacuum filtration (T)
  RT Fabric filters (*)
Finance  (DNT)
Financial incentives (E)
  RT Economics (DENT)
     Financing (T)
     Taxes (DET)
Financing  (T)
  RT Financial incentives (E)
Fines (DNT)
  BT Powder(Particles) (T)
     Particles (DENT)
     Particulates (D)
  NT Superfines (T)
     Ultrafines (T)
  RT Air pollution (DENT)
Fines(Charges)  (*)
  RT Costs (DN)
     Law enforcement (DT)
     Penalties (DNT)
Fish farming - USE:
     Aquaculture (ET)
Fisheries  (DT)
Fishery Conservation and Management Act of 1976 (*)
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws  (EN)
     Legislation (DET)
  RT Coastal Zone Management (*)
Fishes (DENT)
  BT Aquatic animals (DT)
  NT Fresh water fishes (T)
     Marine fishes (T)
  RT Seafood (DET)
     Water pollution effects(Animals) (*)
Fishing industry (E)
  BT Industries  (DNT)
Fishkill (*)
Flame chamber process (E)
  BT Waste processing (E)
  DEF High temperature waste combustion process
     in which waste is fed into a ring column
     created between two concentric cylinders
     causing combustion steps to be above
     each other rather than  following each other.
Flocculants (T)
  RT Coagulants (T)
     Dispersants (DT)
Flocculating (NT)
  RT Coagulation (DNT)
     Emulsification (ET)
Flood control (DET)
Flood forecasting  (T)
  RT Flood  predictions  (N)
Flood plain zoning (T)
  BT Zoning  (T)
  RT Land use zoning (T)
     River basin development (T)
Flood plains (DNT)
Flood predictions  (N)
  RT Flood forecasting (T)
Flood routing (T)
Floods (DENT)
Flotation  (DENT)
  BT Separation (DNT)
  NT Froth flotation  (*)
     Microflotation (*)
  RT Bubble separation (*)
     Flocculating (NT)
     Foam fractionation (*)
Flour mills (T)
  BT Industrial plants (DENT)
  RT Food processing (DT)
Flow rate (DET)
  NT Sewage flow rate (*)
Flue gas  (E)
Flue gases (DT)
  UF  Stack gases (T)
  RT Air pollution (DENT)
     Waste gases (D)
  DEF Waste gases that are formed by an
     industrial  process and not yet released
     to the atmosphere.
Fluid infiltration (T)
  NT Salt water intrusion  (T)
  RT Ground water (DENT)
     Hydrology (DENT)
     Water influx (T)
Fluidized  bed (E)
  RT Packed bed (E)
Fluidized  bed combustion (*)
  BT Combustion (DENT)
  RT Coal combustion (*)
Fluidized  bed processes (D)
  NT CAFB process (E)
     Chemically active fluidized bed process (*)
  RT Westvaco process (*)
Fluidized  bed processing (T)
Fluidized  bed processors  (DNT)
Fluidized  bed reactors (E)
Fluidized  bed refuse gasification (E)
  BT Waste  processing (E)
  RT Refuse  derived fuels  (E)
     Solid wastes (DE)
  DEF Partial oxidation pyrolysis using air and
     air/stream for gasification and catalysts to
     increase thermal  efficiency.  May be used
     for coal or oil shale  gasification.  Produces
     fuel gas.
Fluidized processing (*)
Fluidized-bed combustion (E)
Fluoride poisoning (T)
  BT Toxic diseases (NT)
  RT Toxicology  (DNT)
26

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Flux force/condensation scrubbers (*)
  BT Air pollution control equipment (DT)
     Scrubbers (DENT)
Fly ash (DET)
Food analysis (DT)
  RT Chemical analysis (DENT)
Food chain (D)
Food chains (ET)
  RT Biological productivity (T)
     Ecology (DENT)
     Ecosystems (DEN)
     Primary biological  productivity (T)
     Feeding habits (T)
Food industry (T)
  BT Industries (DNT)
  NT Brewing industry (*)
     Food  processing  industries (*)
  RT Food  processing (DT)
Food processing  (DT)
  NT Beet  processing (*)
     Canning (DENT)
     Citrus fruit processing (*)
     Fruit processing (*)
     Grain processing (*)
     Olive  processing (*)
     Potato processing (*)
     Poultry processing (*)
     Rice processing (*)
     Seafood processing  (*)
     Sugar beet processing (*)
  RT Canneries (T)
     Dairy products (DT)
     Flour  mills (T)
     Livestock (DENT)
     Rendering plants (*)
     Slaughtering house wastes (*)
     Whey (*)
Food processing  industries (*)
  BT Industries (DNT)
  NT Brewing industry (*)
     Dairy industry  (*)
     Feed and grain industry (*)
     Fishing industry (E)
     Meat packing industry (*)
     Potato industry (*)
     Poultry processing industry (*)
     Rendering industry (*)
Forecasting (DENT)
  NT Economic forecasting (T)
     Flood forecasting (T)
     Noise exposure forecasts (*)
     Predictions (DNT)
     Weather forecasting (DNT)
  RT Mathematical prediction (DT)
     Trends (DNT)
Forest  fires (DNT)
  BT Fires (DENT)
Forest  land (T)
  BT Land (NT)
Forest management  (N)
  BT Management (DENT)
     Resources management (N)
  RT Land use (DENT)
     Timber  inventory  (N)
Forestry  (DT)
  RT Afforestation (T)
     Clearcutting  (*)
     Lumbering (T)
     Reforestation (DT)
Forests (DN)
  RT Resources (DENT)
     Natural resources (DT)
Fossil fuels  (DENT)
  BT Fuels (DENT)
  NT Anthracite (ET)
     Attic oil (T)
     Bituminous coal (ET)
     Black coal (E)
     Brown coal (E)
     Cannel  coal  (ET)
     Cellar oil (T)
     Charcoal (DENT)
     Coal (DENT)
     Coal tar oils (E)
     Crude oil  (DENT)
     Fuel oil (DT)
     Fuel oils (EN)
     Gasoline (DENT)
     Kerosene (DENT)
     Lignite  (ET)
     Liquefied natural  gas  (DENT)
     Mixed  base crudes (T)
     Naphthalene base crudes (T)
     Natural gas (DENT)
     Paraffin base crudes  (T)
     Peat (ET)
     Petroleum (E)
     Petroleum coke (T)
     Semibituminous coal (T)
     Shale oil (ENT)
     Sour crudes (ET)
     Subbituminous coal (T)
     Sweet crudes (T)
     Torbanite (E)
Foundries (DET)
  RT Industrial plants  (DENT)
     Metal  industry (T)
Frequency analyzers (DNT)
  RT Acoustic detectors (DT)
Frequency  meters  (DT)
  RT Acoustic detectors (DT)
Fresh water biology  (T)
  BT Aquatic biology  (T)
  RT Marine biology (DNT)
     Water  pollution effects(Animals) (*)
     Water  pollution effects(Plants) (*)
                                                                                                27

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Fresh water fishes (T)
  BT Aquatic fishes (*)
     Fishes (DENT)
Froth flotation (T)
  BT Flotation (DENT)
Fruit processing  (*)
  BT Food processing  (DT)
  NT Citrus fruit  processing (*)
Fuel additives (DT)
  NT Antiknock additives (NT)
Fuel combustion (N)
  BT Combustion  (DENT)
  NT Coal combustion (*)
  RT Fluidized bed combustion (*)
     Fluidized-bed combustion (E)
Fuel consumption (DENT)
  BT Consumption (DNT)
     Energy consumption (DEN)
  RT Consumption rate (T)
     Consumption rates (E)
     Electric power consumption (*)
     Electric power demand (T)
     Energy demand (E)
     Energy requirements (N)
     Energy use (*)
Fuel demand (*)
  BT Energy demand  (E)
  RT Electric power consumption (*
     Electric power demand (T)
     Energy consumption (DEN)
     Fuel  consumption (DENT)
Fuel economy (T)
  RT Fuel consumption (DENT)
Fuel management (E)
  BT Energy management (D)
  RT Energy policy (EN)
     Fuel  substitution  (*)
     Resource allocation (N)
Fuel oil (DT)
  BT Oils  (DENT)
     Petroleum products (DET)
  NT Bunker oils  (T)
     Residual oils (T)
Fuel oils  (EN)
  RT Shale oil (ENT)
Fuel shortages (D)
  BT Shortages (DT)
Fuel storage (T)
  NT Coal storage (T)
     Gas  storage (T)
     Oil storage (T)
     POL storage  (DT)
  RT Energy storage (DENT)
Fuel substitutes  (*)
  RT Refuse (ET)
     Solid wastes (DE)
Fuel substitution (*)
  RT Energy management (D)
     Energy policy (EN)
     Fuel management (E)
     Interfuel competition (*)
     Resource allocation  (N)
Fuel-air ratio (E)
  RT Air fuel ratio (*)
     Combustion  (DENT)
Fuels (DENT)
  NT Aerozine (N)
     Aircraft fuels (NT)
     Alloy nuclear fuels (ET)
     Anthracite (ET)
     Attic oil (T)
     Automobile  fuels (N)
     Automotive  fuels (DET)
     Aviation fuels (DET)
     Aviation gasoline (DT)
     Bituminous coal (ET)
     Black coal (E)
     Blast furnace gas (T)
     Boiler  fuel (E)
     Brown coal  (E)
     Bunker oils (T)
     Cannel coal (ET)
     Carburetted  water gas (E)
     Cellar  oil (T)
     Charcoal (DENT)
     Chemical fuels (N)
     Coal (DENT)
     Coal gas (DET)
     Coal liquids (E)
     Coal tar oils (E)
     Coke (EN)
     Coke oven gas (E)
     Crude  oil (DENT)
     Diesel  fuels  (ENT)
     Dispersion nuclear fuels (E)
     Fossil fuels (DENT)
     Fuel cell fuels (T)
     Fuel gas (E)
     Fuel oil (DT)
     Fuel oils (EN)
     Fuel slurries  (E)
     Gas fuels (EN)
     Gas oils (E)
     Gasoline (DENT)
     Heating fuels (T)
     Heavy oils (ET)
     High btu gas (E)
     High energy fuels (N)
     High sulfur coal (*)
     High sulfur fuels (*)
     Hydrocarbon fuels (N)
     Hydrogen (DENT)
     Hydrogen fuels (EN)
     Intermediate btu gas (E)
     Jet engine fuels (DENT)
     Kerosene (DENT)
28

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     Lignite (ET)
     Liquid  metal fuels (E)
     Liquefied natural gas (DENT)
     Liquefied petroleum gases (T)
     Liquid  fuels (ET)
     Low btu gas (E)
     Low sulfur coal (*)
     Low sulfur fuels (*)
     Manufactured gas (T)
     Metal fuels (N)
     Metallurgical fuels (T)
     Methane (DENT)
     Methanol (E)
     Methyl alcohol  (T)
     Methyl alcohols (N)
     Mixed  base crudes (T)
     Molten salt fuels (ET)
     Motor  fuels (T)
     Naphthalene base crudes (T)
     Natural gas (DENT)
     Natural gas liquids (ET)
     Natural uranium fuels (T)
     Nuclear fuels (ENT)
     Oils (DNT)
     Paraffin  base crudes (T)
     Peat (ET)
     Petroleum (ET)
     Producer gas (E)
     Pulverized fuels (T)
     Reactor fuels (DT)
     Residual  oils (T)
     Semibituminous coal  (T)
     Semicoke (E)
     Shale oil (ENT)
     Shale tar oil (E)
     Slurried jet engine fuels (T)
     Slurry fuels (D)
     Solid fuels (E)
     Solid jet engine fuels (DT)
     Solvent-refined coal (E)
     Sour crudes  (T)
     Sour gas (T)
     Subbituminous coal (ET)
     Sweet crudes (T)
     Sweet gas (T)
     Synthane (N)
     Synthesis gas (E)
     Synthetic fuels (EN)
     Synthetic petroleum  (E)
     Thermonuclear fuels (E)
     Torbanite (E)
     Town gas (E)
     Unleaded gasoline (E)
     Water gas (E)
     Wood (DENT)
Fungicides (DENT)
  BT Pesticides (DENT)
  RT Federal Insecticide, Fungicide,  and
        Rodenticide Act (*)
  NOTE: For chemical and tradenames, see the
     Pesticides  heading in the chemical index
     at the back of this microthesaurus.
Furnaces (DENT)
  BT Heaters (DEN)
     Heating equipment (NT)
  NT Arc furnaces (E)
     Air furnaces (T)
     Blast furnaces (ET)
     Chamber  furnaces (E)
     Continuous  furnaces (T)
     Crucible furnaces  (T)
     Electric arc  furnaces (T)
     Electric furnaces (ET)
     Electric resistance  furnaces (T)
     Electron beam furnaces (E)
     Furnace cupolas (T)
     Gas furnaces (T)
     Heat treating furnaces (T)
     Induction  furnaces (ET)
     Kilns (T)
     Melting furnaces (T)
     Metallurgical furnaces (T)
     Muffle furnaces (T)
     Openhearth furnaces (T)
     Pot furnaces (T)
     Retort furnaces (T)
     Reverberatory furnaces (T)
     Sintering  furnaces (T)
     Skull furnaces (T)
     Solar furnaces (DENT)
     Vacuum furnaces (ENT)
  RT Boilers (DENT)
     Gas burners (T)
     Oil  burners  (T)
     Ovens (NT)
Garbage (DNT)
  RT Solid wastes (DE)
Garbage disposal (DT)
  BT Solid waste disposal (*)
  RT Refuse disposal (T)
Gas analysis  (DENT)
  BT Chemical analysis (DENT)
  RT Air pollution detection (*)
Gas burners (T)
  BT Burners (DET)
  RT Oil burners (DT)
Gas chromatography (DENT)
  RT Chemical analysis (DENT)
     Chromatographic analysis (DT)
Gas detection (*)
Gas detectors (DNT)
  BT Detectors (DNT)
  NOTE: NTIS does not use this term when
     particulates are being detected.
Gas industry  (T)
Gas pipelines (E)
                                                                                                 29

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  NT Arctic gas pipelines (E)
  RT Alaska pipeline (E)
     Trans Alaska  pipeline (*)
Gas sampling (T)
  BT Sampling (DENT)
  RT Air pollution  sampling (*)
     High volume samplers (*)
     Samplers (DENT)
Gas scrubbing (T)
  BT Scrubbing (NT)
  RT Air pollution  control (*)
     Pollution  control (N)
Gas spills (E)
  RT Land pollution (E)
     Liquefied natural gas (DENT)
     Natural gas (DENT)
     Water pollution (DENT)
Gaseous wastes (E)
  BT Wastes(lndustrial) (D)
     Wastes (DENT)
  RT Air pollution  (DENT)
     Combustion products (DENT)
     Exhaust gases (DENT)
Gasoline service stations - USE:
     Service stations (*)
Gaussian  plume models (*)
  RT Air pollution  (DENT)
     Atmospheric diffusion (NT)
     Atmospheric motion (DT)
Genetic radiation effects (E)
  BT  Biological radiation effects  (E)
     Radiation effects (DENT)
Glass (DENT)
  RT  Solid wastes  (DE)
Glass  industry (T)
  BT Industries (DNT)
Glass recycling (*)
  BT Waste recycling (*)
Global air pollution (N)
  BT  Air pollution  (DENT)
Global air sampling program (N)
  RT  Air pollution  sampling (*)
     Air sampling  (N)
Global analysis (E)
Global risk - USE:
     Global analysis (E)
Government agencies (*)
  RT Air pollution  control agencies (*)
     Bureau of Land Management (*)
     Bureaus (Organizations) (N)
     Environmental Protection  Agency (*)
     Federal agencies (*)
     Pollution  control agencies (E)
Government policies (ET)
  BT Policies (DNT)
  RT County government (*)
     Local  government (T)
     National government (T)
    State government (DT)
    Water allocation(Policy) (*)
    Water pricing policies (*)
Grain elevators (T)
Grain milling (*)
Grain processing (*)
  BT Food processing (DT)
Grants  (DNT)
Grassland  (T)
  BT Land (NT)
  RT Grazing land (T)
    Plains  (NT)
    Savannas (T)
Grasslands  (DN)
  BT Land (NT)
Grazing (DN)
Grazing land (T)
  BT Land (NT)
Grazing lands (N)
Greenbelt irrigation (*)
  BT Irrigation (ENT)
  RT Sewage irrigation (*)
Grey iron industry  (*)
  BT Iron and steel industry (T)
    Metal  industry (T)
Grinding (Comminution) (N)
  BT Comminution (DENT)
Grinding(Comminution) (T)
Ground water (DENT)
  BT Water (DENT)
  NT Artesian water (T)
    Connate water (ET)
    Perched  water (T)
  RT Aquifers (DENT)
    Artesian wells (T)
    Fluid infiltration  (T)
    Hydrogeology (NT)
    Hydrology (DENT)
    Percolation (DNT)
    Selective withdrawal (*)
    Soil water (T)
    Springs(Water) (T)
    Water resources (DENT)
    Water table (DT)
    Water tables (N)
Ground water recharge (T)
  UF Recharge
  RT Aquifers (DENT)
    Irrigation (ENT)
    Natural recharge (*)
    Percolation (DNT)
    Recharge wells (T)
    Water conservation (DT)
    Water influx (T)
    Sewage irrigation  (*)
Groundwater movement (*)
  RT Hydrology (DENT)
Growth (ENT)
30

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Habitat  (E)
Habitats (N)
Harbors  (DENT)
  BT Waterways(Transportation) (T)
Harvesting  (ET)
  RT Algae (DENT)
     Biomass (ET)
     Crops (EN)
     Farm crops (DT)
     Wood (DENT)
Hauling  (NT)
  RT Bulk handling (T)
     Cargo transportation (T)
     Collecting  methods (DT)
     Conveying (T)
     Mine haulage (T)
Hazardous materials (T)
  RT Biological agents (DT)
     Chemical  warfare agents (D)
     Chemical spills (*)
     Corrosive gases (DT)
     Corrosive liquids (DT)
     Explosives (DENT)
     Flammable gases (NT)
     Flammable liquids (T)
     Industrial wastes (ENT)
     Pesticides (DENT)
Hazardous materials spills (*)
  RT Oil  spills (DE)
     Water pollution (D)
Hazardous materials transportation (D)
  BT Transportation (DNT)
Hazards (DENT)
  NT Radiation hazards (DENT)
     Toxic hazards (DN)
Haze (DNT)
  RT Aerosols (DENT)
     Opacity (DENT)
     Sky  brightness (DNT)
     Smog (DENT)
Health physics (DNT)
  NOTE:  NTIS uses this  term  only when discussing
     radiobiology.
Hearing  (DN)
  BT Perception (NT)
     Senses (T)
  NT Binaural hearing (NT)
  RT Acoustic perception (*)
     Auditory perception (DNT)
     Loudness discrimination  (T)
     Pitch discrimination (DT)
Heat recovery  (DET)
  RT Energy conservation (DEN)
     Thermal efficiency  (ET)
     Thermal effluents (E)
     Thermal pollution (DEN)
     Waste energy utilization (N)
     Waste heat (E)
     Waste heat boilers (T)
     Waste heat utilization (*)
Heated effluents -  USE:
     Thermal effluents (E)
Heating fuels (T)
  BT Fuels (DENT)
  NT Coal (DENT)
     Fuel oil (DT)
     Fuel oils  (EN)
     Kerosene (DENT)
     Metallurgical fuels (T)
     Natural gas (DENT)
Heavy duty vehicles  (*)
  BT Motor vehicles  (T)
  RT Trucks (DENT)
Heavy metals (D)
  BT Metals (DENT)
  NOTE: See  Chemical Index .
Herbicides  (DET)
  BT Pesticides (DENT)
  NT Amiben  (*)
     D 2-4 herbicide (*)
     Diaquate (*)
     Fluometuron (*)
     T  2-4-5 herbicide (*)
  RT Hazardous materials  (T)
  NOTE: For chemicals and tradenames, see the
     Pesticides  heading in the  chemical index
     at the  back of this microthesaurus
High protein  supplements  (*)
  RT Animal feeds (E)
     Feeding stuffs (T)
     Single  cell  protein (E)
High sulfur coal (*)
High sulfur fuels (*)
  RT High  sulfur coal (*)
     Low sulfur  coal (*)
     Low sulfur  fuels (*)
     Sour crudes (ET)
Highway noise (*)
  BT Noise (Sound) (N)
     Noise(Sound) (DT)
Highway planning  (T)
  BT Planning (DENT)
Highway transportation  (T)
  BT Transportation  (DNT)
Highways (DENT)
  RT Roads (DENT)
Hiway computer program
  RT Air pollution (DENT)
     Atmospheric diffusion (NT)
     Automobile exhaust (D)
     Exhaust gases (DENT)
    Mathematical models  (DENT)
Hiway model (*)
  BT Mathematical models (DENT)
  RT Air pollution (DENT)
Hog houses (T)
                                                                                              31

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   RT Farms (T)
 Home range (E)
   RT Animal ecology (T)
      Animals (DE)
      Wild animals (E)
   DBF The area to which the activities
      of an animal are confined.
 Hospital solid wastes (*)
   BT Solid wastes (DE)
 Hospitals (DENT)
   BT Buildings (DENT)
 Household  refuse grinders (*)
   RT Refuse (ET)
      Refuse disposal (T)
 Household  wastes (*)
   RT Garbage (DNT)
      Septic  tanks (DT)
   RT Solid wastes (DE)
      Water  pollution (DET)
 Houses (ET)
   BT Buildings (DENT)
      Residential buildings  (T)
   RT Mobile homes (E)
      Residential sector  (*)
 Housing  (*)
   RT Residential buildings (T)
 Housing (Dwellings) (D)
 Human ecology (T)
   BT Ecology (DENT)
 Human tolerances (N)
   BT Tolerances (Physiology) (N)
      Tolerances(Physiology) (DT)
 Human wastes (N)
   NT Urine  (DENT)
      Feces (DENT)
   RT Manure (*)
 Hybrid electric-powered  vehicles (E)
   RT Electric batteries (DENT)
      Electric-powered vehicles (E)
      Electric vehicles (T)
 Hybrid vehicular propulsion (*)
   RT Motor vehicles (T)
 Hydraulic models (DT)
 Hydrocarbon poisoning (N)
   BT Toxic diseases (NT)
   RT Toxicology (DNT)
 Hydrogen fuels (EN)
   BT Fuels (DENT)
   RT Fuel cells (DENT)
 Hydrogen sulfide (DNT)
 Hydrogen sulfides  (E)
 Hydrogen-based economy (E)
 Hydrogen-based energy  (N)
 Hydrogeology (NT)
   BT Hydrology (DENT)
   RT Aquifers (DENT)
     Earth hydrosphere (NT)
     Ground water (DENT)
Hydrologic cycle  (T)
  RT Evaporation  (ENT)
     Hydrology (DENT)
     Precipitation  (Meteorology) (N)
     Precipitation(Meteorology) (T)
     Surface water (N)
     Surface waters (DET)
     Transpiration (DENT)
Hydrology (DENT)
  NT Hydrogeology (NT)
     Urban hydrology (*)
  RT Drainage (DNT)
     Droughts  (T)
     Earth hydrosphere (ENT)
     Evapotranspiration (DNT)
     Flood control (DET)
     Fluid infiltration (T)
     Ground water (DENT)
    Groundwater movement (*)
     Hydraulics (ENT)
     Hydrologic cycle (T)
     Limnology (DENT)
     Runoff (DT)
     Salt water intrusion (T)
     Storm water  (*)
     Storm water runoff (*)
     Stream  flow (T)
     Surface water (N)
     Surface waters  (DET)
     Watersheds (DENT)
Hygiene (DNT)
  NT Industrial  hygiene (DT)
  RT Public health (DENT)
Ignition (DENT)
  RT Combustion
     Ignition systems (DENT)
Ignition systems  (DENT)
  RT Automobile engines (NT)
     Ignition (DENT)
IGT waste process  - USE:
     Biogas process  (E)
Impactors (NT)
  NT Cascade  impactors (E)
Impingement  (DENT)
  RT Dams (DENT)
     Entrainment (DENT)
     Intake structures (E)
Implementation Air Pollution Planning Program (*)
Implementation air pollution planning  (*)
In plant processes (*)
  DEF NTIS uses this very  general term to
     express  the concept of operations occurring
     solely within an industrial  plant.  There
     is usually an option of carrying out an
     operation  outside the plant when this
     term is  used.
Incineration (*)
  RT Combustion (DENT)
32

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     Solid waste disposal (*)
Incinerators (DENT)
  RT Combustion (DENT)
     Pyrolysis incineration (*)
     Solid waste disposal (*)
  RT Refuse disposal (T)
     Waste  disposal (DENT)
Indicator species (T)
  RT Bioindicators (*)
     Biological indicators  (E)
Indoor air pollution (D)
  BT Air pollution (DENT)
Industrial accidents (ET)
Industrial areas (N)
Industrial atmospheres (T)
  RT Air pollution (DENT)
     Indoor air  pollution (D)
     Industrial medicine (DT)
     Occupational health and safety (*)
Industrial buildings (T)
  BT Buildings (DENT)
Industrial development  (*)
  RT Economic development (ENT)
     Land development (T)
Industrial hygiene  (DT)
  BT Hygiene (DNT)
  RT Industrial medicine (DET)
     Industrial safety (N)
     Occupational health and safety (*)
     Preventive medicine (DET)
Industrial medicine (DET)
  RT Air pollution effects(Humans) (*)
     Ear protectors (DNT)
     Environmental health (*)
     Industrial hygiene  (DT)
     Loudness (DNT)
     Maximum permissible exposure (*)
     Noise exposure (*)
     Noise levels (*)
     Occupational diseases (DET)
     Occupational health and safety (*)
     Preventive medicine (DET)
     Public  health (DENT)
     Ultrasonic injuries (T)
     Water  pollution effects(Humans) (*)
Industrial plants (DENT)
  NT Asphalt plants (T)
     Canneries (T)
     Chemical plants (T)
     Chloralkali plants (*)
     Coal gasification  plants (E)
     Coal liquefaction plants (E)
     Concrete plants (T)
     Distilleries (T)
     Flour mills (T)
     Foundries (DET)
     Natural gas processing plants (E)
     Nitric acid  plants (*)
     Oil shale processing  plants (*)
     Paper mills (T)
     Phosphoric  acid plants (*)
     Refineries (DT)
     Rendering plants (*)
     Sewage treatment plants (*)
     Sulfuric acid plants (*)
     Waste processing plants (E)
Industrial safety (N)
  RT Industrial hygiene  (DT)
     Occupational  health and safety (*)
Industrial waste treatment (T)
  BT Water pollution control (*)
  NT Biological  industrial  waste treatment (*)
  NOTE: NTIS uses this  term  only to express
     treatment of industrial wastes for
     water pollution control.
Industrial wastes (ENT)
  NT Black  liquors (T)
     Spent liquors(Pulping) (T)
Industrial water (T)
  RT Cooling water (T)
Industries  (DNT)
  NT Aerospace industry (NT)
     Aircraft industry (NT)
     Aluminum industry  (T)
     Asbestos industry (T)
     Automotive industry (*)
     Barium industry (*)
     Boron industry (*)
     Brewing industry (*)
     Brick industry (T)
     Building products industries (*)
     Cement industry (*)
     Chemical industry (DET)
     Copper industry (T)
     Dairy industry (*)
     Drug industry (T)
     Feed  and grain industry (*)
     Fertilizer industry (*)
     Fiberglass industry  (*)
     Fishing industry (E)
     Food industry (T)
     Food processing industries (*)
     Gas industry (T)
     Glass industry (T)
     Grey iron industry  (*)
     Iron and steel  industry (T)
     Iron industry (D)
     Lead industry (*)
     Leather industry (*)
     Magnesium  industry (T)
     Meat packing industry (*)
     Metal industry (T)
     Mineral industry  (E)
     Mining industries (*)
     Munitions industry  (DT)
     Natural gas industry (E)
                                                                                                  33

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     Oil shale  industry (E)
     Organic chemicals industry (*)
     Paint industry (*)
     Paper industry (DT)
     Petrochemical industry (*)
     Petroleum industry (DET)
     Phosphate fertilizer industry (*)
     Phosphate industry (*)
     Plastics industry (DT)
     Potato industry (*)
     Poultry processing industry (*)
     Rendering industry (*)
     Rubber industry (T)
     Secondary materials  industry (*)
     Selenium  industry (*)
     Steel industry (D)
     Sugar industry (*)
     Textile industry (DT)
     Wood processing industry (*)
     Zinc industry (T)
   RT Food processing (DT)
     Lumbering (T)
     Refineries (DT)
     Petroleum refining (T)
 Industry (E)
 Information management (N)
 Information retrieval (DENT)
   RT Data retrieval (NT)
 Information systems  (DENT)
 Infrared detection (DT)
   RT Air pollution  detection (*)
     Infrared lasers (DNT)
     Laser spectroscopy (*)
     Long path infrared spectroscopy (*)
     Remote sensing (ET)
     Water pollution detection (*)
 Infrared detectors (DNT)
 Infrared spectrophotometers (DNT)
 Infrared spectroscopy (DNT)
   NT Long path  infrared  spectroscopy (*)
     Nondispersive infrared spectroscopy (*
   RT Chemical analysis (DENT)
     Laser spectroscopy (*)
     Spectroscopic analysis (NT)
 Inhalation (DE)
   RT Respiration  (DENT)
     Respiratory  diseases  (DNT)
 Injection (DENT)
   NT Limestone injection (*)
   RT Air pollution  control (*)
 Injection wells (ET)
   RT Liquid waste  disposal  (*)
     Ultimate disposal (*)
     Waste disposal (DENT)
 Insect control  (DT)
   NT Biological insect control (D)
 Insecticides (DENT)
   BT Pesticides (DENT)
  NT Aldrin (E)
     Chlordan (T)
     Chlordane (D)
     DDE pesticide (*)
     DDT (DET)
     Diazinon  (T)
     Dichlorodiphenyltrichloroethane (N)
     Dieldrin (DENT)
     Endrin  (NT)
     Heptachlor  (T)
     Lindane (E)
     Parathion (E)
     Toxaphene (*)
  RT Hazardous materials (T)
  NOTE: For chemicals and tradenames, see the
      Pesticides  heading in the chemical
     index at the back of this microthesaurus.
Inspection (DENT)
  NT Motor vehicle  inspection (*)
Insurance (DE)
  RT Fines(Charges) (*)
     Legal liability (N)
     Liabilities  (ENT)
     Penalties  (DNT)
Intake structures (E)
Interceptor  sewers (*)
  BT Sewers (T)
Interfuel competition (*)
  BT Competition (T)
     Energy  management (D)
     Fuel management (E)
     Fuel substitution (*)
     Resource  allocation (N)
Internal combustion engine noise (DT)
  BT Noise (Sound)  (N)
     Noise(Sound) (DT)
International  law (DNT)
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Law of  the Sea (*)
     Laws (EN)
  RT Boundary Waters Treaty Between Canada
       and  the United States(1901) (*)
    Water Utilization  Treaty of 1944 between
       Mexico and  the United States (*)
International  laws (E)
International  regulations  (E)
  BT Regulations (DENT)
  RT International agreements (E)
     International law  (DNT)
     International laws (E)
International  relations (DNT)
International  waters  (*)
  RT Law of the Sea (*)
Inventories  (ENT)
Ion exchanging (NT)
  NT Anion  exchanging (T)
     Cation  exchanging (T)
34

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  RT Demineralization (DET)
     Water softening (T)
Ion selective electrode analysis (E)
Ion selective electrodes  (DN)
  BT Electrodes (DENT)
  RT Chemical analysis (DENT)
     Potentiometric analysis (DNT)
Ionizing radiation (DNT)
  RT Irradiation (DENT)
     Sterilization (DENT)
Iron and steel industry  (T)
  BT Metal industry (ET)
  NT Grey iron industry (*)
Iron bacteria (*)
  BT Bacteria (DENT)
Iron industry - USE:
     Iron and steel industry (T)
Irradiation (DENT)
  RT Disinfection (DT)
     Ionizing  radiation (DNT)
     Ionizing  radiations (E)
     Sterilization (DENT)
Irrigated land (T)
  BT Arable  land (T)
     Land (NT)
Irrigation (ENT)
  NT Greenbelt irrigation (*)
     Sewage  irrigation (*)
     Sprinkler irrigation (T)
     Subsurface irrigation (T)
     Surface  irrigation (T)
  RT Arable  land (T)
     Cultivation (NT)
     Farm crops (DNT)
     Ground  water recharge (T)
     Land reclamation (ET)
     Liquid waste disposal (*)
     Seepage (DNT)
     Sludge disposal (T)
     Waste water (DET)
     Water distribution (DT)
Irrigation systems (D)
  NT Spray irrigation systems (*)
Irrigation water (*)
  BT Water (DENT)
Jet aircraft noise  (NT)
  BT Noise (Sound) (N)
     Noise(Sound) (DT)
Jet engine exhaust (D)
  RT Aircraft exhaust  (D)
     Exhaust  emissions (T)
     Exhaust  gases (DENT)
Jet engine noise (DT)
  BT Engine noise (DNT)
Jet exhaust  (N)
  BT Exhaust  gases (DENT)
Jet plane noise (*)
  BT Noise (Sound) (N)
     Noise(Sound) (DT)
Junk car disposal (*)
  BT Solid waste disposal (*)
  RT Metal recycling  (*)
     Metal scrap (T)
     Metal scraps (D)
     Scrap (NT)
     Secondary materials industry (*)
     Waste recycling  (*)
Junkyards (*)
  RT Solid waste disposal (*)
Kraft paper (T)
  BT Paper (E)
     Papers (NT)
     RT Bag papers (T)
Labeled substances  (DT)
  RT Oil tagging (*)
Lagoons  (N)
Lagoons (Ponds)  (T)
  NT Aeration ponds (*)
     Anaerobic lagoons (*)
  RT Settling basins (T)
Lakes (DENT)
  BT Topographic features (T)
  NT Strip mine lakes (*)
Land (NT)
  NT Arable land (T)
     Arid land (DT) '
     Arid lands (N)
     Barren land (N)
     Deserts (DENT)
     Farmlands (N)
     Forest land (T)
     Forests (DEN)
     Grassland (T)
     Grasslands (DN)
     Grazing  land (T)
     Irrigated land (T)
     Marshes  (E)
     Marshlands (N)
     National parks (T)
     Parks (NT)
     Public land (ET)
     Rangelands (N)
     Savannas (T)
     Semiarid land (T)
     Swamps  (DENT)
     Wetlands (N)
  RT Jungles (DT)
     Land management (N)
     Pasture (T)
     Real property (T)
Land development (T)
  RT Community development (T)
     Economic development  (ENT)
     Land reclamation (ET)
     River basin development (T)
     Soil  conservation (T)
                                                                                              35

-------
     Urban development (NT)
     Urban planning (DNT)
     Urbanization (T)
 Land disposal (*)
   RT Earth  fills (DT)
     Irrigation (ENT)
     Sewage disposal (DET)
     Sewage  irrigation  (*)
     Sludge disposal (T)
     Solid waste disposal (*)
     Waste disposal (DENT)
 Land management (N)
   BT Management (DENT)
   RT Environment management (DN)
     Regional planning  (NT)
     Resources management (N)
     Rural land  use (N)
     Urban planning (DNT)
     Wilderness  (DN)
 Land pollution  (E)
   BT Pollution (DENT)
 Land pollution  abatement (E)
   RT Land pollution (E)
      Land reclamation (E)
     Pollution abatement (D)
 Land reclamation  (ET)
   RT Backfilling  (E)
     Land development  (T)
     Mines (Excavations) (N)
     Mines(Excavations) (T)
      Reforestation (DT)
      Revegetation (E)
 Land restoration (*)
 Land use (DENT)
   NT Rural land use (N)
   RT Airport planning (N)
      Barren land (N)
      Earth  resources (N)
     Economic development  (ENT)
     Farmlands  (N)
     Forest management (N)
     Grasslands (DN)
     Industrial areas (N)
     Residential  areas (N)
     Suburban areas (N)
     Urban development (NT)
     Urban planning (DNT)
     Urbanization (T)
 Land use planning (*)
   BT Planning (DENT)
 Land use zoning (T)
   BT Zoning (T)
   RT Land use (DENT)
     Urban development (NT)
 Landscaping  (T)
 Laser injuries (*)
 Laser radar - USE:
     Optical radar (DNT)
Laser spectroscopy (*)
  RT Chemical analysis (DENT)
     Laser induced fluorescence (D)
Laser velocimeters (D)
Law enforcement (DT)
  BT Enforcement (E)
  RT Compliance (E)
     Fines(Charges) (*)
     Legal aspects (E)
     Legal liability (N)
     Liabilities (ENT)
     Penalties (T)
     Pollution regulations (E)
     Regulations (DENT)
Law of the Sea  (*)
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence)  (DT)
     Laws (EN)
    Law  (Jurisprudence) (N)
Law(Jurisprudence) (DT)
  NT Commercial law (T)
     Criminal law (T)
     International law (DNT)
     International laws (E)
     Law  of the Sea (*)
     Ordinances (T)
     Pollution laws (E)
     Public law (T)
     Radiation protection laws (E)
     Statutes (T)
     Water law (T)
  RT Airport and  Airway Development Act of 1970 (*)
    Boundary Waters Treaty Between Canada
       and the United States(1901) (*)
     Clean Air Act (E)
    Coastal Zone Management Act of 1972 (*)
     Compliance  (E)
     Energy Policy and Conservation Act (*)
     Federal  Air Highway Act (*)
     Federal  Environmental Pesticide Control Act (*)
     Federal  Insecticide,  Fungicide, and
       Rodenticide Act (*)
     Federal  Water Pollution  Control Act (E)
     Federal  Water Pollution  Control Act
       Amendments of 1972 (*)
    Fishery Conservation and Management Act of 1976 (*)
     Legislation (DET)
     Licenses (ET)
     Litigation (DT)
    Marine Protection Research and Sanctuaries Act (*)
     National Environmental  Policy Act (E)
     Noise Control Act of 1972 (*)
    Noise Pollution and Abatement Act of  1970 (*)
     Radiation Control for Health and Safety
       Act of 1968 (*)
     Regulations (DENT)
     River and Harbor Act of 1899 (*)
    Safe Drinking Water Act of 1974 (*)
36

-------
     Solid Waste Disposal Act (*)
     Toxic Substances Control Act (*)
     Water Utilization Treaty of 1944 Between
       Mexico  and the United States (*)
     Water  rights  (ET)
     Wilderness Act (*)
Laws (EN)
Leaching (DENT)
  RT Beneficiation  (NT)
     Dissolving  (DNT)
     Extraction  (DENT)
     Irrigation (ENT)
     Runoff  (DT)
     Surface water runoff (T)
Lead free gasoline - USE:
     Unleaded gasoline (E)
Lead industry  (*)
  BT Industries  (DNT)
Lead paint  poisoning (*)
  BT Toxic diseases (NT)
  RT Lead poisoning (NT)
     Toxicology (DNT)
     Toxicity (DENT)
Lead poisoning (NT)
  BT Toxic diseases (NT)
  RT Toxicology (DNT)
Leather industry (*)
  BT Industries  (DNT)
Legal aspects (E)
  RT Law enforcement (DT)
     Legal liability (N)
     Liabilities (ENT)
     Penalties (DNT)
Legal liability  (N)
  RT Insurance  (DE)
     Legal aspects (E)
     Law enforcement (DT)
     Liabilities (ENT)
     Penalties (DNT)
Legislation  (DET)
  NT Environmental legislation
  RT Airport and Airway  Development Act
       of 1970 (*)
    Boundary Waters Treaty Between Canada
       and  the United States(1901) (*)
     Clean Air Act (E)
    Coastal  Zone Management Act of  1972 (*)
    Energy  Policy  and Conservation Act (*)
    Federal  Air Highway  Act (*)
    Federal  Environmental Pesticide Control
       Act (*)
     Federal Insecticide, Fungicide, and
       Rodenticide Act (*)
    Federal  Water Pollution Control Act (E)
    Federal  Water Pollution Control Act
       Amendments of 1972 (*)
    Law  (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Licenses (ET)
     Litigation (DT)
     Marine Protection  Research and
       Sanctuaries Act (*)
     National Environmental Policy Act (E)
     Noise Control Act  of  1972 (*)
     Noise Pollution and Abatement Act
       of 1970 (*)
     Radiation Control  for Health  and Safety
       Act of 1968 (*)
     Radiation protection laws (E)
     Regulations (DENT)
     River and Harbor  Act of 1899 (*)
     Safe Drinking Water Act (*)
     Solid Waste Disposal  Act  (*)
     Water Utilization Treaty of 1944 Between
       Mexico and the United  States (*)
     Wilderness  Act (*)
Liabilities (ENT)
  RT Law enforcement (DT)
     Legal aspects (E)
     Legal liability (N)
     Penalties (DNT)
Licenses  (ET)
  RT Legislation  (DET)
     Regulations (DENT)
Lidar - USE:
     Optical radar (DNT)
Life  cycle (E)
Life  cycles  (DT)
Light duty vehicles (*)
  BT Motor vehicles (T)
  RT Trucks (DENT)
Light scattering (DENT)
  RT Haze (DNT)
     Transmissometers (DNT)
Lignin (DENT)
  RT Cellulose (DET)
     Wood  pulp (DT)
Limestone  (DENT)
     Carbonate minerals (D)
     Carbonate rocks (ET)
  RT Calcium carbonates (ENT)
     Dolomite (DE)
     Dolomite (Mineral) (N)
     Dolomite(Mineral)  (T)
     Dolomite(Rock) (T)
     Limestone injection (*)
     Limestone scrubbing (*)
Limestone injection (*)
  BT Injection (DENT)
  RT Air  pollution  control (*)
     Furnaces (DENT)
Limestone scrubbing  (*)
  RT Air  pollution  control (*)
     Alkaline scrubbing (*)
     Dry  methods (*)
                                                                                                37

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     Wet methods (*)
     Scrubbers (DENT)
 Limnology (DENT)
   RT Ecology (DENT)
     Ecosystems (DENT)
     Eutrophication (DNT)
      Fresh  water  biology (T)
      Fresh  water  fishes (T)
      Lakes  (DENT)
      Nutrients (DENT)
      Ponds (DENT)
      Rivers (DENT)
      Sediment water interactions (*)
      Sediments (DENT)
      Self purification (*)
     Water chemistry (DET)
 Liquid chromatography  (D)
   RT Chemical analysis (DENT)
      Chromatographic analysis (DT)
 Liquid waste disposal (*)
   RT Solid  waste disposal (*)
   NOTE: Used by NTIS to express the disposal
      of pure or concentrated liquids. Aqueous
      waste solutions are covered by water
      pollution terms.
 Liquid wastes (DE)
   RT Brines (DENT)
      Oil wastes (D)
      Solid  wastes (DE)
      Waste oils (E)
   DEF Wastes comprised of pure or nonaqueous
      liquids such  as brines, oils, etc.
 Litigation  (DT)
   RT Law (Jurisprudence) (N)
      Law(Jurisprudence) (DT)
 Litter (*)
   RT Solid wastes (DE)
 Livestock (DNT)
   RT Beef  cattle (T)
      Feedlot  wastes (*)
      Slaughtering house wastes  (*)
      Swine (DENT)
 Local government  (T)
   RT County  government  (*)
      National government (T)
      State  government (DT)
 Long path infrared  spectroscopy (*)
   BT Infrared spectroscopy (DNT)
   RT Laser spectroscopy (*)
 Loudness (DNT)
   RT Noise levels (*)
      Noise  (Sound) (N)
      Noise(Sound) (DT)
     Sound pressure (DNT)
 Loudness discrimination  (T)
   BT Perception (NT)
   RT Acoustic perception (DNT)
     Audiometry (DNT)
    Auditory perception (DNT)
    Senses (T)
Low flow (*)
  RT Rivers (DENT)
    Stream flow (T)
    Water shortage (*)
Low noise (DN)
Low sulfur coal (*)
Low sulfur fuels (*)
  NT Low sulfur coal (*)
  RT Clean energy  (N)
    High sulfur coal (*)
Lumbering (T)
  RT Clearcurting (*)
    Forestry (DT)
    Sawmills (T)
Machinery noise (D)
  BT Noise (Sound) (N)
    Noise(Sound) (DT)
    Sound levels (*)
Magnesium industry (T)
  BT Industries (DNT)
    Metal industry (T)
Magnesium oxide  scrubbing (*)
  RT Air  pollution control (*)
    Wet methods (*)
Malignant neoplasms (T)
  BT Neoplasms (DENT)
  NT Adenocarcinomas (T)
    Angiosarcomas (T)
    Breast carcinoma (T)
    Bronchogenic carcinoma (T)
    Chondrosarcoma (T)
    Choriocarcinoma (T)
    Cystadenocarcinoma  (T)
    Fibrosarcoma (T)
    Fibrosarcomas (E)
    Gastric carcinoma (T)
    Hodgkins disease (ET)
    Leukemia (DE)
    Leukemias (NT)
    Liposarcoma (T)
    Lymphosarcoma (T)
    Medulloblastoma (T)
    Melanoma  (T)
    Melanomas (E)
    Multiple myeloma (T)
    Nephroblastoma (T)
    Neuroblastoma (T)
    Reticulum cell  sarcoma (T)
    Retinoblastoma (T)
    Rhabdomyosarcoma (T)
    Rhabdomyosarcomas (E)
    Sarcoma (DT)
    Skin cancer (T)
  RT Achlorhydria (T)
    Cachexia (T)
    Cancer (DN)
38

-------
     Carcinogens (DENT)
Malodorous compounds  (D)
  RT Odor (E)
     Odors (DNT)
Man environment interactions (N)
Management (DENT)
  NT Environment management (N)
     Forest management (N)
     Land management (N)
     Resources management (N)
     Solid waste management (*)
    Water management (N)
    Water management(Applied) (*)
  RT Administration (E)
Management planning (NT)
  BT Planning (DENT)
Management planning and control (D)
Manufactured gas (T)
  BT Synthetic fuels (DEN)
  RT Bailie process (E)
     Biogas process (E)
     Blast furnace gas (T)
     Coke oven gas (*)
     Feedstocks (*)
     Fuel gas (E)
     Producer gas (E)
     Purox pyrolysis process (E)
     Synthane (N)
     Synthesis gas (E)
Manure (*)
  RT Agricultural wastes (ET)
     Animal wastes  (*)
     Barnlot wastes (*)
     Feces (DENT)
     Feedlot wastes (*)
     Fertilizers and wastes (T)
     Human wastes (N)
Marble bed scrubbers (*)
  BT Scrubbers (DENT)
  RT Air pollution control  (*)
Marine biology (ONT)
  BT Aquatic biology (T)
  RT Fresh  water biology  (T)
     Water pollution effects(Animals) (*)
     Water pollution effects(Plants) (*)
Marine disposal (E)
  RT Ocean waste disposal (D)
Marine environments (N)
Marine fishes (T)
  BT Aquatic animals (DT)
     Fishes  (DENT)
Marine microorganisms (T)
  RT Aquatic microbiology (T)
     Benthos (T)
Marine Protection Research and Sanctuaries Act (*)
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation  (DET)
  NOTE: Enacted in  1972
Marine resources (N)
  BT Resources (DENT)
  BT Resources (DENT)
  RT Coastal ecology (DENT)
     Earth resources  (DT)
     Natural resources (DT)
Marine terminals (DT)
  RT Deep water oil  terminals (E)
     Deepwater  terminals (N)
     Tanker terminals (N)
     Terminal facilities (NT)
Marine transportation (DT)
Marshes  (E)
  NT Salt marshes (*)
     Tidal marshes (*)
  RT Swamps (DENT)
Marshlands (N)
  BT Land (NT)
  RT Marshes (NT)
     Salt  marshes (*)
     Swamps (DNT)
Mass spectrometers  (DENT)
Mass spectroscopy (DENT)
  RT Chemical analysis (DENT)
Metabolism (DENT)
  NT Carbohydrate metabolism (NT)
     Mineral metabolism (NT)
     Nitrogen metabolism (NT)
     Oxygen consumption (DT)
  RT Nutrient requirements (*)
Materials handling  (DENT)
  RT Bailing (*)
     Bulk handling (T)
     Cargo transportation (T)
     Coal handling (T)
     Conveying  (T)
     Feeding (DE)
     Feeding (Supplying) (N)
     Feeding(Supplying) (T)
     Hauling (NT)
Materials recovery (DENT)
  BT Recovery (DENT)
  RT Byproducts (T)
     Recycled materials (D)
     Recycling (ENT)
     Salvage (DT)
     Utilization  (DNT)
     Waste  processing (E)
     Waste recycling  (D)
  NOTE: Used when  discussing the actual
     separation  or recovery process of a
     material, e.g. glass, wood, iron, or
     paper.
Mathematical models (DENT)
  RT Air Quality Display Model (*)
     Atmospheric models (NT)
                                                                                             39

-------
    Computerized simulation (DNT)
    Economic models (DT)
    Environment models (N)
    Hiway model (*)
Mathematical prediction  (DT)
  BT Predictions (DNT)
  RT Forecasting (DENT)
Maximum permissible exposure (*
  BT Exposure (NT)
Meat packing industry (*)
  BT Food  industry (T)
     Food processing industries (*)
     Industries (DNT)
Megalopolis  (T)
  RT Cities (NT)
    Megalopolises (N)
    Urban areas (DET)
Megalopolises (N)
  RT Cities (NT)
    Communities  (DENT)
    Megalopolis  (T)
    Urban areas  (DET)
Mercury poisoning (T)
  BT Toxic  diseases (NT)
  RT Toxicology (DNT)
Metal finishing  (NT)
  NT Chemical finishing  (T)
     Electroless plating (DT)
     Electroplating (DENT)
    Metal polishing (NT)
     Peening (NT)
     Plating (DENT)
Metal industry (T)
  BT Industries (DNT)
     Industry  (E)
  NT Aluminum industry (T)
     Barium industry (*)
     Copper industry (*)
     Grey iron industry (*)
     Iron and steel industry (T)
     Iron industry (D)
     Lead industry (*)
    Magnesium industry (T)
    Selenium industry (*)
     Steel industry (D)
     Zinc industry (T)
  RT Foundries (DET)
Metal recycling  (*)
  BT Waste recycling (*)
Metal scrap (T)
  RT Solid  wastes (DE)
Metal scraps (D)
Metals  (DENT)
  NT Heavy metals (D)
Meteorology (DENT)
Methane  bacteria (*)
  BT Bacteria (DENT)
Methemoglobin (DE)
Methemoglobinemia (T)
  BT Blood diseases (DT)
  RT Nitrites (DENT)
     Toxic diseases (NT)
     Water pollution effects(Humans) (*)
Metropolitan areas (*)
  RT Cities (NT)
     Communities (DENT)
     Industrial  areas (N)
     Municipalities  (DT)
     Residential areas (N)
     Rural areas (DENT)
     Rural urban fringe (T)
     Standard  metropolitan  areas (*)
     Suburban areas (N)
Microbiology (DNT)
  NT Aquatic microbiology (T)
     Bacteriology (DNT)
     Soil microbiology (T)
Microclimatology (DNT)
  BT Climatology (NT)
  RT Bioclimatology (NT)
Microorganism control (Sewage) (T)
  BT Sewage treatment (DET)
Microorganism control (Water)  (T)
  RT Disinfection (DT)
     Sterilization (DENT)
Microorganisms (DENT)
Microscopy (DENT)
Microscreening (*)
Microwave radiation hazards (*)
Microwave radiation leakage (*)
Microwave radiobiology (*)
  BT Radiobiology  (DENT)
Microwave radiometry (*)
  RT Oil pollution (D)
     Oil pollution detection (*)
     Radiometers (DENT)
     Water pollution, detection (*)
Microwave sterilization (*)
  BT Sterilization (DENT)
  RT Disinfection (DT)
Mine acid drainage (*)
  BT Drainage (DNT)
  RT Acid mine drainage (E)
     Mine wastes (*)
     Mine waters (T)
     Water pollution (DENT)
Mine wastes (*)
  NT Acid mine drainage (E)
     Coal mine spoil (*)
     Mine acid drainage (*)
     Spoil (DT)
     Tailings (ET)
  RT Mine waters (T)
     Solid wastes (DE)
     Strip mine wastes (*)
Mine waters (T)
40

-------
  RT Acid mine drainage (E)
     Mine acid drainage (*)
     Water pollution (DENT)
Mineral cycling (E)
  RT Ecology (DENT)
     Ecosystems (DEN)
Mineral industry  (E)
  BT Industries (DNT)
Mineral wastes (E)
  BT Solid wastes  (DE)
  RT Spoil (DT)
     Spoil banks (E)
Mines (E)
Mines (Excavations) (N)
Mines(Excavations) (DT)
  NT Coal mines (DT)
     Uranium mines (E)
  RT Mines (Excavations) (N)
Mining (ENT)
  NT Caving mining (T)
     Coal mining (ET)
     Face preparation mining (T)
     Hydraulic mining (T)
     Oil shale mining (E)
     Open  pit mining (T)
     Open  stope mining (T)
     Placer mining (T)
     Quarrying (T)
     Room  and pillar mining (T)
     Solution mining (T)
     Stope mining  (T)
     Strip mining (NT)
     Surface  mining (ET)
     Timbered stope mining (T)
     Underground  mining (ET)
Mining industries (*)
  BT Industries (DNT)
Molecular sieves (DE)
  RT Air pollution control equipment (DT)
Mollusca (DT)
  BT Invertebrates  (DENT)
  NT Gastropoda (DT)
        Snails (DET)
     Pelecypoda (T)
        Clams (DT)
        Mussels (DT)
        Oysters (DET)
  RT Aquatic animals (DT)
     Crustacea  (DT)
     Shellfish (T)
Molluscs (E)
Mollusks (N)
Molten carbonate process (E)
  RT Air pollution control (*)
    Waste gas recovery (*)
  DEF  Process for removal of  sulfur dioxide
     from flue gas using ternary autectic
    alkali metal carbonate melt; reduction
     of sulfite and sulfate reaction
     products with petroleum coke; and
     reaction of resulting sulfide with
     steam and carbon dioxide to regenerate
     carbonate and form  hydrogen sulfide, which
     can  be converted  to sulfur.
Monitoring  (DE)
  NT Environmental monitoring (N)
Monitors (DNT)
  NT Air pollution monitors (E)
  RT Air  samplers  (E)
     Detectors (DNT)
     Gas detectors (DNT)
     Impactors (NT)
     Samplers (DENT)
     Warning systems  (DNT)
Mortality rates  (DT)
Motor noise  (T)
  RT Electric motor noise (DT)
Motor vehicle engines (T)
  NT Automobile engines (NT)
     Tractor engines (DT)
     Truck engines (T)
Motor vehicle inspection (*)
  BT Inspection (DENT)
Motor vehicle maintenance (*)
  BT Maintenance  (DENT)
Motor vehicles (T)
  BT Ground vehicles (DT)
  NT Heavy duty vehicles (*)
     Light duty vehicles (*))
     Motor trucks (T)
     Motorcycles (D)
  RT Automobiles (ENT)
     Automotive vehicles (D)
     Electric vehicles (T)
     Trucks (DENT)
Mufflers (DNT)
  NT Engine mufflers (DT)
  RT Noise  reduction (DNT)
Multiple purpose reservoirs (T)
  BT Reservoirs (DNT)
Municipal engineering (T)
  BT Engineering (ENT)
  RT Civil engineering  (T)
     Municipal wastes (E)
     Urban engineering (*)
Municipalities  (DT)
  UF Towns (T)
  RT Cities  (NT)
     Local government  (T)
     Metropolitan  areas (*)
     Rural areas (DENT)
     Suburban areas (N)
     Urban areas (DET)
Munitions  industry (DT)
  BT  Industries (DNT)
  RT Chemical industry (DET)
                                                                                                41

-------
Mussels (DT)
   BT Aquatic animals (DT)
     Mollusca (DT)
     Shellfish (T)
Mutagens (DET)
   RT Carcinogens (DENT)
     Mutations (DENT)
National Ambient Air Quality Standards (*)
   BT Standards (DENT)
     Air pollution standards (*)
National Emissions Data System (*)
   UF Neds
   RT Air pollution (DENT)
     Air quality  data (*)
     Information systems (DENT)
National Environmental Policy Act (E)
   UF Nepa
   BT  Law (Jurisprudence) (N)
     Law(Jurisprudence)  (DT)
     Laws (EN)
     Legislation (DET)
National government (T)
   RT Local government (T)
     State government (DT)
National parks (T)
   BT Land (NT)
     Parks (NT)
   RT Recreational facilities (T)
National pollutant discharge elimination system (*)
Natural abundance (*)
   BT Abundance (DENT)
Natural draft cooling towers (E)
   BT Cooling towers (DET)
 Natural gas processing plants (E)
   UF Natural gasoline plants
   BT Industrial  plants  (DENT)
   RT Natural gas industry (E)
     Natural gas seepage (*)
 Natural oil seepage  (*)
   RT Oil pollution (D)
     Oil slicks (N)
     Water pollution (DENT)
Natural radioactivity (DET)
   BT Radioactivity (DENT)
Natural resources (DT)
   BT Resources (DENT)
Natural resources management (*)
   RT Resources (DENT)
NEDS - USE:
     National Emissions Data System (*)
NEPA - USE:
     National Environmental Policy Act (E)
Nephelometers (DNT)
   BT  Detectors (DNT)
   RT  Chemical analysis (DENT)
     Photometers (DENT)
     Turbidimeters (DT)
New York Bight (*)
  NOTE: An extensively polluted area around
    New York Harbor.
Newspapers  (NT)
Newsprint (T)
  BT Papers (NT)
    Printing papers (T)
  RT Mechanical pulps (T)
  RT Waste papers (T)
Nexus computer code (*)
  BT Computer programs (DENT)
Nitric acid plants  (*)
  BT Chemical plants (T)
    Industrial plants (DENT)
Nitrification (T)
Nitrogen cycle (ET)
  BT Biochemical  cycles (T)
  RT Nitrification (T)
Nitrogen fixation  (ET)
  RT Nitrification (T)
Nitrogen fixing bacteria (T)
  BT Bacteria  (DENT)
Noise analyzers  (DT)
Noise annoyance  (*)
Noise Control Act  of 1972 (*)
  BT Law (Jurisprudence) (N)
    Law(Jurisprudence) (DT)
    Laws  (EN)
    Legislation (DET)
  RT Noise pollution (DN)
    Noise reduction (DNT)
Noise exposure (*)
Noise exposure forecasts  (*)
  BT Forecasting (DENT)
Noise exposure models (*)
Noise intensity (N)
Noise levels (*)
  RT Effective perceived noise levels (N)
    Loudness (DNT)
Noise masking (T)
  RT Noise reduction (DNT)
Noise measurement (N)
  RT Acoustic  measurement (DT)
    Acoustic measurements (N)
    Frequency analyzers (DNT)
    Frequency measurement (ENT)
    Frequency meters (DT)
    Noise  meters (N)
    Sound analyzers (DT)
    Sound level  meters (T)
Noise meters (N)
Noise pollution (DN)
  BT Pollution (DENT)
  RT Airport and Airway Development Act of 1970 (*)
     Environment pollution  (N)
    Federal Aid  Highway Act (*)
    Noise Control  Act of 1972 (*)
Noise pollution abatement (*)
  BT Abatement (T)
42

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     Pollution abatement (D)
  NOTE: NTIS uses this term only to express
     the prevention of noise pollution by
     design changes or planning.  It covers
    methods to stop noise from even being generated.
Noise Pollution and Abatement Act of 1970 (*)
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation (DET)
  RT Noise pollution (DN)
     Noise reduction (DNT)
Noise reduction (DNT)
  RT Acoustic absorption (DT)
     Acoustic  attenuation (DN)
     Acoustic filters (DT)
     Acoustic insulation (DT)
     Damping (DENT)
     Engine mufflers (DT)
     Mufflers (DNT)
     Noise Control Act of 1972 (*)
     Noise masking (T)
     Noise suppressors (*)
     Silencers (NT)
     Sonic chokes (*)
     Vibration damping  (NT)
     Vibration isolators (DNT)
Noise (Sound) (N)
Noise spectra (N)
Noise standards (*)
  BT Standards (DENT)
Noise suppressors (N)
Noise (Sound) (DT)
  NT Aerodynamic noise (DNT)
     Aircraft  noise (DNT)
     Aircraft  propeller noise (T)
     Airport noise (DNT)
     Ambient noise (DT)
     Background noise (DENT)
     Compressor noise (DT)
     Effective perceived  noise levels  (N)
     Electric motor noise (DT)
     Engine noise (DNT)
     Gear noise (DT)
     Highway noise (*)
     Internal combustion engine noise (DT)
     Jet aircraft noise (NT)
     Jet engine noise (DT)
     Jet plane noise (D)
     Low noise (DN)
     Machinery noise (D)
     Marine propeller noise (T)
     Motor noise (T)
     Propeller noise (D)
     Rocket engine noise (D)
     Rocket motor noise (*)
     Ship noise (D)
     Sonic boom (DT)
    Sonic booms (N)
    Tire noise (*)
    Traffic noise (*)
    Transportation  noise (*)
    Vehicle noise (*)
Nondispersive infrared spectroscopy  (*)
  BT Infrared spectroscopy (DNT)
Nonpoint sources (*)
  BT Sources (DNT)
  RT Point sources (EN)
    Stationary sources (*)
Nuclear agro industrial complexes (*)
  BT Energy parks (E)
    Nuclear parks (E)
Nuclear explosions (DENT)
Nuclear fuel reprocessing (T)
Nuclear parks (E)
  BT Energy parks (E)
  NT Nuclear agro industrial complexes (*)
Nuclear power  (E)
  RT Electric power (DENT)
    Nuclear energy (DENT)
Nuclear power plants (DENT)
  BT Electric power plants (DNT)
    Thermal power  plants (DET)
  NT Offshore nuclear power  plants (E)
    Underground nuclear stations (E)
    Underwater  nuclear power plants (*)
Nuclear power reactors (N)
Nuclear reactor accidents (T)
  BT Accidents (DENT)
  NT Fuel element failure (E)
    Loss of coolant (E)
    Loss of flow (E)
    Meltdown (E)
    Power-cooling-mismatch accidents  (E)
    Reactor core disruption (E)
  RT Radiation hazards (DENT)
    Reactor accidents (DE)
Nuclear reactors (DENT)
  NT Breeder reactors (DENT)
    Power reactors  (EN)
    Power reactors(Nuclear) (T)
  NOTE: See Reactor  terms in the various
    thesauri for a complete  list.
Nutrients (DENT)
  RT Inorganic nitrates (NT)
    Inorganic phosphates (T)
    Nitrates (DEN)
    Phosphates (DEN)
  NT Nutrient  removal  (*)
    Nutrient requirements (*)
    Path  of pollutants (*)
Occupational  diseases (DET)
  NT Anthracosilicosis (T)
    Asbestosis (T)
    Berylliosis (ET)
    Farmers lung (T)
                                                                                               43

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     Pneumoconiosis (T)
     Pneumoconioses (E)
   RT Air pollution effects(Humans) (*)
     Contact dermatitis (NT)
     Flash  burns  (ET)
     Industrial medicine (DET)
     Respiratory diseases (DNT)
     Skin diseases (DET)
 Occupational health and safety (*)
   RT Auditory defects (DNT)
     Ear protectors (DNT)
     Environmental health (*)
     Industrial medicine (DET)
     Maximum permissible exposure (*)
     Noise exposure (*)
     Occupational diseases (DET)
     Public health (DENT)
     Ultrasonic injuries (T)
 Ocean bottom (DNT)
   RT Benthos (ET)
 Ocean currents  (DNT)
 Ocean dumping - USE:
     Ocean waste disposal (D)
 Ocean environments (DT)
 Ocean waste disposal (*)
   BT Waste disposal (DENT)
   RT Liquid waste disposal (*)
     Marine disposal (E)
     Outfall sewers (T)
     Radioactive  waste disposal (E)
     Solid  waste  disposal (*)
 Oceanographic data  (DT)
   RT Water quality data (*)
 Oceanographic surveys (T)
   BT Surveys (DET)
 Oceans (DENT)
   BT Topographic features (T)
   NT Territorial seas (T)
   RT Seas (E)
   NOTE: NTIS indexes for the specific ocean
     or sea and usually does not  use the
     broad term  Oceans.
 Odor control  (T)
 Odors  (DNT)
   RT Malodorous compounds (D)
 Offshore drilling (DET)
   BT Drilling (DENT)
   RT Blowouts (E)
     Gas wells (T)
     Natural gas wells (E)
     Offshore sites (E)
     Offshore structures (DT)
     Oil recovery (NT)
     Oil wells (T)
     Well drilling  (E)
 Offshore nuclear power plants  (E)
   BT Electric power plants (DNT)
     Nuclear power plants (DENT)
     Thermal power plants (DET)
  NT Atlantic-! reactor (E)
     Atlantic-2 reactor (E)
  RT Offshore reactor sites  (E)
     Offshore sites (E)
Offshore reactor sites (N)
  RT Offshore nuclear power plants (E)
Offshore sites (E)
Offshore structures  (DT)
  RT Offshore drilling (DET)
     Offshore platforms (EN)
     Offshore sites (E)
Oil  burners (DT)
  BT Burners (DENT)
  RT Gas burners (T)
Oil  fingerprints  - USE:
     Oil tagging (*)
Oil  pollution (D)
  BT Pollution (DENT)
  RT Ballast (DNT)
     Ballast tanks (DT)
     Ballast water (*)
     Bunker oils (T)
     Crude  oil (DNT)
     Fuel oil (DT)
     Lubricating oils (DENT)
     Natural oil seepage (*)
     Oils (DENT)
     Residual fuels (E)
     Ship accidents (*)
     Water pollution  (DENT)
Oil  pollution containment (D)
  RT Booms(Equipment) (DT)
     Oil retention booms  (*)
Oil  pollution control  (*)
  RT Sinking agents (*)
     Oil retention booms  (*)
Oil  pollution detection  (*)
  BT Water pollution detection (*)
     Oil tagging (*)
     Water  analysis (DT)
Oil  pollution removal (*)
  RT Absorption (DENT)
     Biodeterioration  (DT)
     Cleaning (DENT)
     Coalescing (NT)
     Dispersing (DNT)
     Materials recovery (DENT)
     Oil water separators (*)
     Skimmers (ET)
Oil  retention booms  (*)
  BT Booms (Equipment) (N)
     Booms(Equipment) (T)
  RT Oil pollution containment (*)
Oil  seeps - USE:
     Natural oil  seepage (*)
Oil  shale industry (E)
  BT Industries (DNT)
44

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Oil shale mining  (E)
  BT Mining (ENT)
Oil slicks (N)
  RT Natural oil seepage (*)
Oil spills (DE)
  RT Contingency planning (*)
     Oil  pollution (D)
Oil spreading process (*)
Oil spreading rate (*)
Oil tagging  (*)
  UF Oil fingerprints
  RT Labeled substances (DT)
     Law enforcement (DT)
     Oil  pollution (D)
     Oil  spills (DE)
     Oil  pollution detection (*)
Oil wastes  (DT)
  BT Liquid  wastes (DE)
  RT Waste oils (E)
  DEF  Concentrated waste oils not diluted,
     e.g. waste automobile lubricating oil.
Oil water separators (*)
  RT Ballast water (*)
Oil wells (ET)
Once through boilers (*)
  BT Boilers (DENT)
Once-through cooling systems (E)
Opacity  (DENT)
  RT Optical properties (DENT)
     Transmissivity (DNT)
     Transmittance (DNT)
     Turbidity (DENT)
     Visibility (DNT)
OPDAR - USE:
     Optical radar (DNT)
Open  burning (*)
  RT Combustion  (DENT)
Operating costs  (T)
  BT Cost (E)
     Costs (DNT)
     Expenses (T)
Optical radar (DNT)
  UF Laser radar
     Lidar
     Opdar
  RT Air  pollution  detection (*)
     Detection (DNT)
     Laser spectroscopy (*)
     Optical detection (DT)
     Remote sensing  (ET)
Ordinances (T)
  RT Regulations (DENT)
     Pollution regulations (E)
     Law enforcement (DT)
     Law(Jurisprudence) (DT)
     Licenses (ET)
     Litigation (DT)
Organic  chemicals industry
  BT Chemical industry (DET)
     Industries (DNT)
Organic loadings (*)
  RT Stream pollution (T)
     Water pollution  (DENT)
Organic solvents (DET)
  BT Solvents (DENT)
Organic wastes (ET)
  RT Agricultural wastes (ET)
     Bagasse (ET)
     Dissolved organic matter (T)
     Manure (*)
     Rice hulls (*)
Organic wastes (Fuel conversion) (N)
Outfall sewers (T)
  BT Sewers (T)
  RT Ocean waste disposal (D)
     Sewage treatment effluents (*)
Overfire air systems (*)
  RT Air pollution control (*)
     Boilers (DENT)
Overflows (T)
  RT Combined sewers (T)
     Sewers (T)
Oxidants  - USE:
     Oxidizers (DNT)
Oxidation  (DENT)
  RT Aeration  (DNT)
     Oxygenation (NT)
  NT Wet oxidation (*)
Oxidation  lagoons  - USE:
     Aeration ponds (*)
Oxidizers  (DNT)
  UF Photochemical  oxidants (E)
Oxygen sag (*)
  RT Aeration  (DNT)
     Anaerobic conditions (ET)
     Dissolved oxygen (T)
Oxygenation  (NT)
Oysters (DET)
  BT Aquatic animals (DT)
     Mollusca  (DT)
     Molluscs (E)
     Mollusks (N)
     Shellfish (DT)
Ozonation (D)
Ozonization (T)
  RT Air pollution control (*)
     Industrial waste treatment (T)
     Sewage treatment (DET)
     Water pollution control (*)
     Water treatment (DENT)
Packaging materials (DT)
  RT Bag  papers (T)
     Bags  (DENT)
     Boxboard (T)
     Container board (T)
     Packaging papers (T)
                                                                                              45

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     Paper (DE)
     Paper-boards (T)
     Papers (NT)
     Plastic bags (*)
 Packaging papers  (T)
   BT Packaging materials (DT)
     Papers (NT)
   NT Bag papers (T)
 Packed bed (*)
   UF Fixed bed
   RT Beds (Process  engineering) (N)
     Beds(Process engineering) (T)
     Fluidized bed  (E)
     Fluidized bed  processes (D)
. Paint industry  (*)
   BT Industries (DNT)
 Paper (DE)
   NT See under  Papers
   RT Papers (NT)
 Paper industry (DT)
   BT Industries (DNT)
   RT Paper mills (T)
     Papermaking (T)
 Paper mills  (T)
   BT Industrial plants  (DENT)
 Paper recycling (*)
   BT Waste  recycling  (*)
   RT Recycled paper (*)
 Paperboard (D)
 Paperboards (T)
   BT Fiberboards (T)
      Papers  (NT)
   NT Boxboard (T)
     Container board  (T)
 Papermaking (T)
   RT Paper mills (T)
      Pulp mills (DT)
      Pulpers (D)
      Pulping (T)
      Spent liquors(Pulping)  (T)
      Spent sulfite liquors  (T)
 Papers (NT)
   NT Bag papers (T)
     Book  paper (T)
     Boxboard (T)
      Building papers (T)
     Container board  (T)
      Kraft paper (T)
     Newspapers (NT)
      Newsprint  (T)
     Packaging  papers (T)
     Paperboards (T)
     Printing papers (T)
     Recycled paper (*)
     Sulfite paper (T)
     Wallpaper (T)
     Waste papers (T)
   RT Paper (DE)
Parking facilities (DT)
Parks (NT)
  BT Land (NT)
  NT National parks (T)
  RT Industrial parks (*)
     Landscaping (T)
     Playgrounds (T)
     Recreational facilities (T)
Parrosaniline analysis (*)
  BT Chemical analysis (DENT)
  RT Air  pollution detection (*)
Particle resuspension (E)
  RT Aerosols (DENT)
     Air pollution (DENT)
     Dispersions  (DENT)
     Dust (DNT)
     Dusts (E)
     Particles (DENT)
     Path of pollutants (*)
     Radionuclide migration (*)
Particle size (DET)
Particle size distribution  (NT)
Particles (DENT)
  RT Aerosols (DENT)
     Air pollution (DENT)
     Dust (DNT)
     Fines (DNT)
     Particle resuspension (E)
     Smoke (DNT)
     Soot (DNT)
     Superfines (T)
     Total suspended particulates (*)
     Ultrafines (T)
Particulate sampling (N)
Particulates (D)
  RT Air  pollution (DENT)
     Particles (DENT)
Path of pollutants  (*)
  RT Atmospheric motion  (DT)
     Drainage  (DNT)
     Environmental exposure pathway (E)
     Ground water (DENT)
     Hydrologic  cycle (T)
     Hydrology (DENT)
     Particle resuspension (E)
     Radionuclide migration (E)
     Runoff (DT)
     Subsurface  drainage (T)
     Surface drainage (T)
     Surface water  runoff (T)
  DEF Used to describe the flow of pollutants
     from a source to  some point in the
     environment.  It is primarily used in
     connection with water pollution studies.
Pathogenesis  (DENT)
  NT Carcinogenesis (DE)
     Leukemogenesis (E)
  RT Cancer (DN)
46

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     Carcinogens (DENT)
     Malignant neoplasms (T)
Pathogens (N)
  RT Bacteria (DENT)
Penalties (DNT)
  RT Costs (DN)
     Fines(Charges) (*)
     Law enforcement (DT)
Percolation (DNT)
  RT Ground water (DENT)
     Permeability (DENT)
     Seepage (DNT)
     Soil water (T)
Performance standards (T)
  BT Standards  (DENT)
  RT Standards  compliance (*)
Permafrost (DENT)
  RT Arctic regions  (DENT)
     Tundra (DENT)
Permissible dosage (DT)
Persistence - USE:
     Environmental  persistence (*)
Pest control (DET)
Pest eradication (E)
Pesticide removal  (*)
  RT Absorption(Biology) (T)
     Accumulation (DET)
     Pesticide residues (*)
     Residues (DENT)
Pesticide residues  (*)
  BT Residues (DENT)
  RT Absorption(Biology) (T)
     Accumulation (DET)
     Bioaccumulation (*)
     Biological accumulation (E)
     Biologically stable substances (*)
     Environmental  persistence (*)
     Pesticide removal (*)
Pesticides  (DENT)
  NT Algicides (T)
     Herbicides (DET)
     Insecticides  (DENT)
     Molluscacides (DT)
     Pyrethrum (T)
     Rodenticides (DT)
  RT Federal  Environmental Pesticide
        Control Act (*)
     Federal Insecticide, Fungicide, and
        Rodenticide Act  (*)
     Hazardous materials (T)
  NOTE: For chemicals and tradenames, see the
     Pesticides   heading in the chemical index
     at  the back of this microthesaurus.
Petrochemical industry (*)
  BT Chemical industry (DET)
     Industries (DNT)
Petroleum  industry (DET)
  BT Industries (DNT)
  RT Petrochemical industry (*)
Petroleum pipelines (T)
  NT Alaska oil pipeline (E)
    Alaska pipeline (E)
    Trans  Alaska pipeline (*)
  RT Pipelines (DENT)
Petroleum refineries (E)
  BT Refineries (DT)
  RT Petroleum refining (T)
    Refinery capacity (*)
    Refining (DENT)
Petroleum refining (T)
  BT Refining (DENT)
  RT Destructive distillation (ET)
    Distillation (DENT)
    Refineries (DT)
Phenol disulfonic acid analysis  (*)
  BT Chemical  analysis  (DENT)
  RT Air  pollution detection (*)
    EPA Method 7 (*)
Phosphate fertilizer industry (*)
  BT Industries (DNT)
    Phosphate industry  (*)
Phosphate industry (*)
  RT Industries (DNT)
Phosphate rock slime  (*)
Phosphoric acid  plants (*)
  BT Industrial plants (DENT)
  RT Chemical  industry  (DET)
Photochemical oxidants (E)
  BT Oxidizers (DNT)
Photochemical reactions (DNT)
  BT Chemical  reactions (DENT)
  RT Smog (DENT)
Photochemistry - USE:
    Photochemical reactions (DNT)
Photographic processing chemicals (T)
Photometers  (DENT)
  BT Detectors (DNT)
Physical  chemical  treatment (*)
  BT Sewage treatment (DET)
  RT Tertiary treatment (*)
Physiology (DENT)
  NT Animal physiology (T)
    Plant physiology (T)
Phytoplankton (DT)
  BT Plankton (DENT)
  RT Zooplankton (DET)
Piezoelectric gages (DNT)
  RT Detectors (DNT)
Pipelines (DENT)
  NT Alaska gas pipeline (E)
    Alaska oil pipeline (E)
    Alaska pipeline (E)
    Arctic gas pipelines (E)
    Gas pipelines (E)
    Petroleum pipelines (T)
    Slurry pipelines (E)
                                                                                               47

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     Trans Alaska pipeline (*)
     Water pipelines (T)
 Pitch discrimination (DT)
   RT Auditory perception (DNT)
 Plankton (DENT)
   NT Phytoplankton (DT)
     Zooplankton (DET)
 Planning (DENT)
   NT Airport planning (N)
     Comprehensive planning (*)
     Contingency planning (*)
     County planning (*)
     Highway planning (T)
     Implementation air pollution  planning (*)
     Land use planning (*)
     Regional planning (NT)
     State planning (*)
     Transportation planning (*)
     Urban planning (DNT)
 Plant ecology  (T)
   BT Ecology (DENT)
 Plant growth  (DET)
   RT Plant physiology  (T)
     Vegetation growth (N)
 Plant location (T)
   RT Site surveys (T)
     Sites (DNT)
 Plant metabolism (T)
   BT Metabolism (DENT)
 Plant pathology  (DT)
 Plant physiology (T)
 Plants  (E)
 Plants  (Botany) (N)
 Plants(Botany) (DT)
   NT Algae (DENT)
     Aquatic plants (DT)
     Aquatic weeds (DT)
     Dicots (*)
     Kelp (D)
     Kelps (*)
     Phaeophyta (T)
     Sea grasses (NT)
     Seaweeds (N)
     Trees (Plants)  (N)
     Trees(Plants)  (T)
     Vegetable crops (T)
     Vegetation (T)
     Water hyacinth (D)
   RT Plants (E)
 Plastic  bags (*)
   BT Bags (DENT)
     Containers (DENT)
     Packaging materials (DT)
 Plastics industry  (DT)
   BT Industries (DNT)
 Plastics recycling  (*)
   BT Waste recycling  (D)
 Playgrounds (T)
  BT Recreational facilities (T)
Plume detection (T)
Plumes (DENT)
  RT Air pollution (DENT)
    Water pollution  (DENT)
Point  sources  (EN)
  BT Sources (DNT)
  RT Air pollution (DENT)
    Nonpoint sources (*)
    Stationary sources (*)
    Water pollution  (DENT)
Poisoning (Reaction inhibition) (N)
  RT Chemical reactions (DENT)
    Sewage treatment (DET)
Poisoning (Toxicology) - USE:
    Toxic diseases (NT)
Poisons (DNT)
Policies (DNT)
  NT  Energy policy (EN)
    Government policies (ET)
Pollen (DENT)
  RT Particles (DENT)
    Particulates (D)
Pollution (DENT)
  NT  Air pollution (DENT)
    Environment pollution (N)
    Global  air pollution (N)
    Land pollution (E)
    Noise pollution (DN)
    Oil pollution (D)
    Radioactive contaminants (NT)
    Radioactive wastes (DENT)
    Solid wastes (DE)
    Thermal pollution (DEN)
    Water pollution  (DENT)
Pollution abatement (D)
  NT  Air pollution abatement (E)
    Land pollution abatement (E)
    Noise pollution abatement (*)
    Water pollution  abatement (DE)
  RT Solid waste abatement (*) (DE)
  NOTE: NTIS uses this term only to express
    the prevention of pollution  by  design
    changes or  planning.   It covers methods
    to stop  pollutants from ever being formed.
Pollution control (N)
  NT  Air pollution control  (*)
    Biological industrial waste  treatment (*)
    Industrial waste treatment  (T)
    Noise reduction  (DNT)
    Sewage treatment (DET)
    Water  pollution control (*)
Pollution control agencies (E)
  NT  Air pollution control  agencies (*)
  RT Bureaus (Organizations)  (N)
    Environmental protection agency (*)
    Federal agencies (*)
Pollution control equipment (E)
48

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   NT Air pollution control equipment (DT)
     Water pollution control equipment (DE)
 Pollution laws (E)
   BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation (DET)
   NT See under  Law(Jurisprudence)
 Pollution monitoring  (N)
   BT Monitoring (DET)
   RT Air pollution monitors (E)
     Air pollution sampling (*)
     Environmental monitoring (N)
     Monitoring  (DE)
     Water pollution sampling (*)
 Pollution regulations  (E)
   BT Regulations (DENT)
   RT Enforcement (E)
     Law  enforcement (DT)
 Polyeleetrolytes (DT)
   RT Coagulants (T)
 Positive crankcase ventilation (D)
   RT Automobile engines (NT)
 Potable water (NT)
   BT Water (DENT)
   RT Drinking water (DE)
     Safe Drinking Water Act  (*)
 Potassium formate process (*)
   RT Air pollution  control (*)
   NOTE: In this process SO2  is reacted with
     potassium formate to produce K2S2O3.
 Potato industry (*)
   BT Industries (DNT)
 Potato processing (*)
   BT Food processing  (DT)
 Potential emissions (*)
   RT Air pollution  (DENT)
 Potentiometric analysis (DNT)
   BT Chemical analysis (DENT)
   RT Ion selective electrodes (DN)
 Poultry processing (*)
   BT Food processing  (DT)
 Poultry processing industry  (*)
   BT Industries (DNT)
 Precipitation (Chemistry)  (N)
 Precipitation (Meteorology)  (N)
 Precipitation washout (*)
   RT Acid rain (E)
     Precipitation  (Meteorology) (N)
     Precipitation(Meteorology) (T)
     Washout (E)
Precipitation (Chemistry) (T)
Precipitation (Meteorology) (T)
  NT Acid  rain (E)
     Hail (DENT)
     Rain (DENT)
     Sleet (T)
     Snow (DENT)
   RT Atmospheric condensation (DT)
      Precipitation washout (*)
     Washout (E)
 Predictions (DNT)
   NT Mathematical prediction (DT)
 Preventive medicine (DET)
   RT Industrial hygiene  (DT)
      Industrial  medicine (DET)
     Occupational health and safety (*)
 Prices (ET)
   RT Charges (E)
      Expenses (T)
      Peak-load pricing (E)
      Profits (DT)
      Rates(Costs) (T)
     Selling costs (T)
     Value (DNT)
 Primary biological productivity (T)
   BT Biological productivity (T)
   RT Ecology (DENT)
     Ecosystems (DEN)
 Primitive areas - USE:
     Wilderness areas (*)
 Printing (DNT)
'Printing papers  (T)
   BT Papers (NT)
   NT Book  paper (T)
      Newsprint (T)
 Project planning  (NT)
 Proteins (DENT)
   NT Single cell protein (E)
 Public administration (DT)
   RT Civil service (*)
     County government (*)
     Government (T)
     Governments (N)
     Local government (T)
     National  government (T)
     State government (DT)
 Public health (DENT)
   RT Environmental health (*)
     Hygiene (DNT)
     Industrial  hygiene (DT)
     Industrial medicine (DET)
     Occupational health and safety (*)
 Public land (T)
   BT Land  (NT)
   RT National parks (T)
     Parks (NT)
     Recreational facilities (T)
 Public lands (E)
 Public law (T)
   BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (T)
      Laws (EN)
 Public Law 90-148 - USE:
     Air Quality Act of  1967 (*)
 Public Law 91-604 - USE:
                                                                                               49

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     Clean Air Amendments of 1970 (*)
 Public Law 92-500 - USE:
     Federal Water Pollution  Control Act
       Amendments of  1972 (*)
 Public Law 93-523 - USE:
     Safe Drinking Water Act of 1974 (*)
 Public Law 94-163 - USE:
     Energy Policy and Conservation Act (*)
 Public opinion (DT)
   BT Opinions (T)
   RT Attitude surveys (T)
     Attitudes (T)
     Sociometrics (DT)
 Public relations (DENT)
   RT Communications management (T)
     Community relations (DT)
 Pulmonary neoplasms (T)
 Pulp mills  (DT)
   RT Paper industry (DT)
     Paper  making (T)
     Paper  mills (T)
     Spent  sulfite  liquors (T)
 Pulping (T)
   NT Chemical pulping (T)
     Mechanical pulping (T)
     Sulfate pulping (T)
     Sulfite pulping  (T)
   RT Macerating (DT)
     Papermaking (T)
 Pulps (T)
   NT Chemical pulps (T)
     Rag pulp  (T)
     Sulfate pulps (T)
     Sulfite pulps  (T)
     Wood  pulp (T)
 Pulsed absorption bed process (*)
 Purox pyrolysis process (E)
   UF Union Carbide Waste Processing System
   BT Waste processing (E)
   RT Manufactured gas (T)
      Pyrolysis (DT)
     Solid waste disposal (*)
     Synthetic fuels (DEN)
   DEF Union Carbide process for pyrolysis
     of solid wastes using pure oxygen to
     supply a high temperature zone with the
     production of low Btu gas that can be
     upgraded to  high Btu gas.
 Pyrolysis incineration (*)
   RT Incinerators (DENT)
     Solid waste disposal (*)
 Quality of  life  (*)
 Quarrying  (T)
   BT Mining (ENT)
     Surface mining (ET)
   RT Rocks  (ENT)
     Strip mining (NT)
 Radiation Control for Health and Safety
       Act of 1968 (*)
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation  (DET)
  RT Radioactive contaminants (NT)
Radiation dosage (DNT)
  BT Dosage (DNT)
     Doses (E)
  RT Dose rate  (DT)
     Dose rates (E)
     Exposure (NT)
     Lethal dosage (DT)
     Lethal doses  (E)
     Lethal radiation dose (E)
     Radiation tolerance (DNT)
Radiation doses  (E)
Radiation effects (DENT)
  NT Biological  radiation effects (E)
     Genetic radiation  effects (E)
     Radiation injuries (DENT)
  NOTE:  NTIS uses this term for biological
     effects only.
Radiation hazards  (DENT)
  BT Hazards (DENT)
  NT Electromagnetic radiation hazards (*)
     Microwave  radiation hazards (*)
     Microwave  radiation leakage (*)
     Radiofrequency radiation hazards (*)
     X  ray radiation leakage (*)
  RT Electromagnetic radiation (DENT)
     Fallout (T)
     Ionizing radiation  (DNT)
     Nuclear radiation  (T)
     Nuclear reactor accidents (T)
     Radioactive materials (DENT)
     Radioactive wastes (DENT)
Radiation injuries (DENT)
  BT Radiation effects (DENT)
  NT Laser injuries (*)
     Radiation burns (ET)
     Ultrasonic burns (*)
Radiation measurement (N)
Radiation measuring instruments (DNT)
  BT Measuring instruments (DENT)
  NT Alpha particle detectors (DT)
     Cerenkov counters (NT)
     Chemical dosemeters (E)
     Chemical dosimeters (T)
     Crystal counters (DET)
     Dosemeters (E)
     Dosimeters  (DNT)
     Foil  dosimeters (T)
     Gamma counters (DT)
     Geiger counters (DNT)
     Geiger-Mueller counters (E)
     Luminescent dosimeters (DT)
     Neutron counters (DT)
50

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     Neutron detectors (E)
     Nuclear emulsion counters (T)
     Photographic dosimeters (DT)
     Photographic film dosemeters (E)
     Photometers (DENT)
     Proton  counters (DT)
     Radiation counters (NT)
     Radioactivant dosimeters (T)
     Radiometers (DENT)
     Scintillation counters (DENT)
     Solid state counters (T)
     Threshold detectors (Dosimeters) (N)
     Threshold detectors(Dosimeters) (NT)
Radiation monitors (DET)
Radiation protection laws (E)
  RT Law (Jurisprudence)  (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation (DET)
     Pollution laws (DET)
Radiation sources (EN)
  BT Sources (DNT)
Radiation tolerance (DNT)
  BT Tolerances (Physiology) (N)
     Tolerances(Physiology) (DT)
  RT Radiation dosage (DNT)
Radioactivation analysis (DT)
  BT Chemical analysis (DENT)
Radioactive contaminants (NT)
  RT Air pollution (DENT)
     Fallout (DENT)
     Land pollution (E)
     Radiation Control for Health and
       Safety Act of 1968 (*)
     Radioactive wastes (DENT)
     Water pollution (DENT)
     Land pollution (E)
Radioactive contamination (D)
Radioactive materials (DENT)
  RT Radioactive contaminants (NT)
     Radioactive wastes (DENT)
Radioactive waste disposal (E)
  BT Waste disposal (DENT)
  RT Liquid  waste disposal (*)
     Solid waste disposal (*)
Radioactive waste processing (ET)
  BT Waste processing  (E)
Radioactive waste storage  (E)
Radioactive wastes (DENT)
  BT Wastes (DENT)
  RT Air pollution (DENT)
     Environment pollution (N)
     Land pollution (E)
     Radioactive contaminants (NT)
     Water pollution (DENT)
Radioactivity (DENT)
  NT Natural radioactivity (DET)
Radiobiology (DENT)
  RT Radiation effects (DENT)
    Radiation hazards (DENT)
Radioecological concentration (E)
  RT Ecology (DENT)
    Radioecology (ET)
Radioecology (ET)
  BT Ecology (DENT)
Radiofrequency radiation hazards (*)
  BT Electromagnetic radiation hazards (*)
    Radiation hazards (DENT)
Radiometers (DENT)
  RT Detectors (DNT)
Radionuclide migration (*)
  RT Path of pollutants (*)
    Particle resuspension (E)
Rain (DENT)
  BT Precipitation  (Meteorology) (N)
    Precipitation(Meteorology) (T)
  NT Acid rain (E)
  RT Precipitation  washout (*)
    Washout (E)
Rain water (E)
  BT Water (DENT)
Rainfall  (DT)
Raman spectroscopy  (DNT)
  RT Chemical analysis (DENT)
    Infrared  spectroscopy (DNT)
    Spectroscopic analysis (NT)
Rangelands  (N)
  BT Land (NT)
Ranking  (DNT)
  RT Comparison (DNT)
    Evaluation (ENT)
    Ratings (DNT)
Rapid  transit systems (EN)
  BT Transportation  (DNT)
    Transportation  systems  (E)
  RT Mass transportation (DT)
    Subways (T)
    Urban transportation (NT)
Rates (Costs) (T)
  NT Water rates (*)
  RT Charges (E)
    Expenses (T)
    Peak-load pricing  (E)
    Prices (T)
    Profits (DT)
    Selling costs (T)
    Value (DNT)
  DEF  Costs per unit of use.
RDF - USE:
     Refuse derived  fuels (E)
Reactivity - USE:
    Chemical reactivity (*)
Reactor accidents (DE)
  BT Accidents (DENT)
  NT See under  Nuclear reactor accidents
Reactor cooling systems (E)
                                                                                               51

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   BT Cooling  systems (ENT)
   NT Direct cycle cooling systems (E)
     Dual cycle cooling systems (E)
 Reactor fuels  (D)
   RT Nuclear  fuels (ENT)
 Reactor safety (EN)
   NOTE: Includes theoretical and experimental
     investigations  of the behavior of
     reactor types and designs under various
     real or hypothetical  accidents.
 Reactor shutdown (DE)
   NT Scram (E)
 Reactor sites  (E)
   RT Site selection (DE)
     Site surveys (T)
 Reactor siting  (*)
   RT Site selection (DE)
 Reactor technology (EN)
   RT Nuclear  engineering (ET)
     Reactor safety (EN)
     Reactors (EN)
 Reactors (ENT)
   RT Chemical reactors (T)
     Electric reactors (T)
     Nuclear  reactors (T)
 Recharge - USE:
     Ground water recharge (T)
 Reclamation  (DNT)
   NT Land reclamation (ET)
   RT Materials recovery (DENT)
     Salvage  (DT)
     Utilization (DNT)
     Waste recycling (D)
 Recreation (DNT)
   RT Recreational facilities (T)
     Tourisim  (*)
     Travel (NT)
 Recreational  facilities  (T)
   NT Bowling  alleys (T)
     Playgrounds (T)
     Stadiums (T)
     Swimming pools (ET)
   RT Cultural centers (T)
     Gymnasiums (T)
     Lakes (DENT)
     Marinas  (T)
     National  parks (T)
     Parks (NT)
     Reservoirs (DNT)
     Skiing (DT)
 Recycled materials (D)
   RT Materials (DENT)
     Solid waste disposal (*)
     Waste recycling (D)
 Recycling  (ENT)
   NT Waste recycling (D)
   RT Energy conservation  (DEN)
     Materials  recovery (DENT)
     Reclamation (DNT)
     Resource conservation (E)
     Solid waste disposal (*)
     Utilization (DNT)
     Waste processing  (E)
Recycling centers - USE:
     Waste recycling centers (*)
Reduction  (Chemistry)  (N)
Reduction (Chemistry)  (T)
  RT Chemical reactions  (DENT)
Refineries  (DT)
  BT Chemical plants (T)
     Industrial plants (DENT)
  RT Chemical industry (DET)
     Petrochemical industry (*)
     Petroleum industry (DET)
     Petroleum refining  (T)
     Refinery capacity  (*)
     Refining (DENT)
Refinery gases  (E)
  BT Petroleum products (DET)
  RT Fossil  fuels  (DENT)
     Fuel gas (E)
     Natural  gas (DENT)
     Petroleum refineries (E)
Refining (DENT)
  NT Petroleum  refining  (T)
  RT Petroleum refineries (E)
     Refineries (DT)
     Refinery capacity  (*)
     Retorting (E)
Refueling (DNT)
  RT Air pollution (DENT)
     Service stations  (*)
Refuse  (T)
  UF Trash (T)
  BT Garbage (NT)
     Refuse derived fuels (E)
     Solid wastes (DE)
Refuse derived  fuels (E)
  BT Fuels (DENT)
  RT Bailie  process (E)
     Biogas process (E)
     Black Clawson process (E)
     Fluidized bed refuse gasification (E)
     Industrial wastes (ENT)
     Municipal wastes (E)
     Purox  pyrolysis process (E)
     Refuse (ET)
     Solid wastes (DE)
     Synthetic fuels (DEN)
  DEF Fuels prepared from solid municipal or
    industrial wastes by  removing all noncombustible
     materials, shredding to a desired size, and
     possible  pelleting  or briquetting.  Also
     includes  fuels derived from refuse pyrolysis
    and methane production from sanitary landfills.
Refuse disposal  (T)
52

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  RT Household refuse grinders (*)
Regeneration (Engineering)  (N)
Regeneration (Engineering) (DT)
  RT Materials recovery (DENT)
     Reclamation (DNT)
     Regeneration (E)
     Waste recycling (D)
Regional analysis (E)
Regional planning (NT)
  RT County planning (*)
     Land development (T)
     Land use (DENT)
     River basin development (T)
     Urban development (NT)
     Urban planning (DNT)
     Urbanization (T)
Regions (DNT)
  NT Antarctic regions (DENT)
     Arctic  regions (DENT)
     Arid regions (*)
     Coastal regions (DE)
     Cold  regions (D)
     Deserts (DENT)
     Polar regions (DENT)
     Remote regions (N)
     Semiarid regions (*)
     Temperate regions (DNT)
     Tropical  regions (DENT)
  RT Land (NT)
Regulations (DENT)
  NT International regulations (E)
     Pollution regulations (E)
  RT Law enforcement (DT)
     Law(Jurisprudence) (DT)
     Licenses (ET)
     Litigation (DT)
     Ordinances (T)
Relocation  (.DNT)
  NT Urban relocation (T)
Remote sensing (ET)
  RT Aerial photography  (DNT)
     Airborne detection (*)
     Optical radar (NT)
     Radar detection (NT)
Remote sensors (N)
  BT Detectors (DNT)
     Sensors (N)
Rendering  industry (*)
  BT Industries (DNT)
Rendering  plants  (*)
  BT Industrial plants (DENT)
  RT Food processing (DT)
Research management (DNT)
  RT Project planning (NT)
Reservoirs  (DNT)
  NT Multiple purpose reservoirs (T)
  RT Destratification (*)
     Selective withdrawal (*)
    Stratification (DENT)
    Thermal stratification (*)
Residential areas (N)
  RT Cities (NT)
    Megalopolises (N)
    Rural areas (DENT)
Residential buildings (T)
  NT Apartment buildings (ET)
    Hotels (*)
    Houses (ET)
    Housing(Dwellings) (D)
    Mobile homes (E)
    Motels (*)
    Townhouses (*)
Residual fuels (E)
  BT Fuel oils (EN)
Residual oils (T)
  BT Crude oil (DNT)
    Oils (DENT)
    Petroleum (E)
    Petroleum products (DET)
Residues (DENT)
  RT Absorption(Biological) (D)
    Absorption(Biology) (T)
    Accumulation (DET)
    Bioaccumulation (*)
    Biological accumulation (E)
    Biologically stable substances (*)
    Environmental persistence (*)
    Pesticide residues (*)
Resource allocation (N)
  RT Energy management (D)
    Energy policy (EN)
    Energy resources (*)
    Fuel substitution (*)
    Interfuel  competition (*)
Resource allocation models (*)
Resource conservation (E)
  NT Natural resource conservation (*)
  RT Energy conservation (DEN)
    Resources (DENT)
Resource management (D)
Resources (DENT)
  NT Earth  resources (N)
    Marine resources (N)
    Natural resources (DT)
Resources management (N)
  BT Management (DENT)
  NT Environment management (N)
    Forest management (N)
    Land management (N)
    Man environment interactions (N)
    Water management (N)
    Water quality management (*)
Respiration (DENT)
  RT Inhalation (DENT)
Respiratory diseases (DNT)
  NT Asbestosis (T)
                                                                                              53

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     Asthma (DNT)
     Berylliosis  (ET)
     Emphysema (DNT)
     Silicosis (ET)
   RT Cigarette  smoking (*)
 Resuspension - USE:
     Particle resuspension (E)
 Retrofit devices (*)
 Retrofitting (DE)
 Return flow (*)
   RT Irrigation  (ENT)
     Irrigation water (*)
 Revegetation (E)
   RT Land reclamation (ET)
 Risk (DNT)
 River and Harbor Act of  1899 (*)
   BT Law (Jurisprudence) (N)
     Law(Jurisprudence)  (DT)
     Laws (EN)
     Legislation (DET)
   RT Water pollution (DENT)
 River basin development (T)
   RT Community development (T)
     Economic development (ENT)
     Flood plain zoning  (T)
     Land development (T)
     Land reclamation (ET)
     Land use zoning (T)
     Regional planning (NT)
     Urban development (NT)
     Urban planning (DNT)
     Urbanization (T)
     Water resources (DENT)
 River basins (NT)
   BT Watersheds (DENT)
 River flow - USE:
     Stream flow (T)
 River regulation (T)
   RT Channel improvements (T)
     Channel stabilization (T)
 Rivers (DENT)
   BT Streams (DENT)
     Topographic features (T)
 Roads (DENT)
   RT Highways (DENT)
 Rocket exhaust (DNT)
   BT Exhaust gases  (DENT)
 Roofing  (T)
 Rotating  disc process (*)
   BT Sewage treatment (DET)
 Rotating  disk separators (*)
   BT Separators (DNT)
 Rubber industry (T)
   BT Industries  (DNT)
   RT Chemical industry (DET)
 Rubble (T)
   RT Refuse (ET)
     Solid wastes (DE)
Runoff  (DT)
  NT Agricultural runoff (*)
     Storm  water runoff (*)
     Surface water runoff  (T)
     Water runoff (N)
  RT Drainage (DNT)
     Flood  control (DET)
     Floods (DENT)
     Hydrology (DENT)
     Rainfall (DT)
     Soil erosion (DNT)
     Stream flow (T)
     Surface drainage (T)
     Surface waters (DET)
     Urban hydrology (*)
     Watersheds  (DENT)
Rural areas (DENT)
  RT Farms (T)
     Metropolitan areas (*)
     Remote areas (D)
     Suburban areas  (N)
     Urban areas (DET)
Rural land use (N)
  BT Land use (DENT)
Rural sociology  (T)
  BT Sociology (DENT)
  RT Farm management (T)
Rural urban fringe  (T)
  RT Rural areas (DENT)
     Suburban areas  (N)
     Urban areas (DET)
Safe Drinking Water Act of 1974 (*)
  BT Law (Jurisprudence) (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation (DET)
  RT Potable water (NT)
     Water pollution (DENT)
     Water quality maintenance (*)
Saline soils  (T)
  BT Soils (DENT)
  RT Salinity (DENT)
     Soil chemistry (T)
Salinity (DENT)
  RT Brackish water (T)
     Saline soils (T)
     Salt water (DT)
     Salt water intrusion (T)
     Sea water (DNT)
     Seawater (E)
Salt marshes (*)
  BT Marshes (E)
     Marshlands (N)
  RT Swamps (DNT)
     Wetlands (N)
Salt water (DT)
  BT Water (DENT)
Salt water intrusion (T)
54

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  RT Fluid infiltration (T)
    Ground water (DENT)
    Hydrology (DENT)
    Salt water (DT)
    Water influx (T)
Saltzman analysis (*)
  BT Chemical analysis (DENT)
Salvage (DT)
  RT Materials recovery (DENT)
    Reclamation (DNT)
    Secondary materials  industry (*)
    Waste recycling (D)
Samplers (DENT)
  NT Air samplers  (E)
    High volume samplers (*)
  RT Air pollution detection (*)
    Air  pollution monitors (E)
    Air  sampling (N)
    Detectors (DNT)
    Gas detectors (DNT)
    Impactors (NT)
    Warning systems (DNT)
    Water analysis (DT)
    Water pollution detection (*)
Sampling (DENT)
  NT Air pollution  sampling (*)
    Air  sampling (N)
    Continuous sampling  (T)
    Gas sampling  (T)
    Particulate sampling  (N)
    Random  sampling  (N)
    Water pollution  sampling (*)
    Air  pollution monitoring (*)
    Samplers (DENT)
Sand  filtration  (T)
  BT Filtration (DENT)
  RT Sewage filtration  (T)
Sanitary engineering  (DT)
  RT Sewage treatment (DET)
    Water treatment (DENT)
Sanitary landfills  (E)
  BT Solid waste disposal (*)
    Waste disposal (DENT)
  RT Earth fills (DT)
Saroad - USE:
    Storage and retrieval of aerometric data (*
Sawdust (T)
  RT Solid wastes (DE)
    Wood wastes  (ET)
Scrap  (NT)
  NT Metal scrap (T)
    Metal scraps (D)
  RT Solid wastes (DE)
Scrap recycling  (*)
  RT Solid wastes (DE)
    Waste recycling  (*)
Scrubbers (DENT)
  NT Charged droplet scrubbers (*)
     Flux force-condensation scrubbers (*)
    Marble bed scrubbers (*)
     Venturi scrubbers (*)
  RT Air pollution control  equipment (DT)
Scrubbing  (*)
  NT Gas scrubbing (T)
  RT Scrubbers (DENT)
    Washing (ENT)
Sea water (DNT)
  BT Water (DENT)
  RT Seawater (E)
Seafood  (DET)
  RT Aquaculture (ET)
Seafood processing  (*)
  BT Food processing (DT)
Seawater (E)
  BT Water (DENT)
  RT Sea water (DNT)
Secondary materials industry (*)
  BT Industries (DNT)
  RT Materials recovery (DENT)
    Reclamation (DNT)
     Salvage (DT)
     Waste recycling  (D)
Secondary sewage treatment (*)
  BT Sewage treatment (DET)
Sediment transport  (DNT)
Sediment water interactions (*)
  RT Limnology  (DENT)
    Sediments (DENT)
    Suspended  sediments (T)
    Water chemistry  (DET)
Sediment water interfaces (*)
Sedimentation  (DET)
Sedimentation  tanks (T)
  RT Clarifiers (DT)
Sediments (DENT)
  NT Bed  load (T)
     Planktonic sediments  (T)
    Suspended  sediments (T)
  RT Benthos (ET)
     Sediment water  interactions (*)
     Silts (T)
Selective withdrawal  (*)
  RT Ground water (DENT)
     Reservoirs (DNT)
    Water management(Applied) (*)
Selenium industry (*)
  BT Metal industry (T)
Self  purification (*)
  RT Aeration (DENT)
     Lakes (DENT)
     Reaeration (*)
     Rivers (DENT)
     Stream pollution (T)
    Streams (DENT)
    Water chemistry  (DET)
    Water pollution  (DENT)
                                                                                             55

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 Semiarid land (T)
   BT Land (NT)
   RT Arid  land (DT)
 Separation  (DNT)
   NT Clarification (T)
     Color separation (DT)
     Concentrating (NT)
     Deaeration (DT)
     Degasification (D)
     Degassing (ENT)
     Desalination  (DE)
     Desalting (T)
     Desorption (DENT)
     Dewatering (T)
     Electrodialysis (DNT)
     Electrostatic precipitation (DT)
     Electrostatic separation  (E)
     Elution  (DNT)
     Elutriation (E)
     Extraction (DENT)
     Filtration (DENT)
     Flotation (DENT)
     Ion exchanging (NT)
     Osmosis (DENT)
     Precipitation  (Chemistry) (N)
     Precipitation(Chemistry)  (T)
     Size screening (T)
     Size separation  (NT)
     Straining (T)
 Separators  (DNT)
   NT Cyclone separators (DET)
     Rotating  disk separators (*)
     Vortex  separators (*)
 Septic  tanks (DT)
   RT Household wastes (*)
     Sewage treatment (DET)
 Service stations  (*)
   RT Refueling (DNT)
 Settling (NT)
 Settling basins  (T)
   RT Sedimentation  tanks (T)
 Sewage (DENT)
 Sewage bacteria (*)
   BT Bacteria (DENT)
 Sewage disposal (DET)
   RT Irrigation (ENT)
      Land disposal (*)
      Liquid waste disposal (*)
     Ocean waste disposal (*)
     Sewage irrigation (*)
     Sludge disposal (T)
      Ultimate  disposal (*)
     Waste disposal (DENT)
 Sewage filtration (T)
   BT Filtration (DENT)
   NT Moving bed contactor  filtration (*
   RT Cross flow filtration (*)
     Sand filtration  (T)
     Trickling filtration (T)
     Vacuum filtration (T)
Sewage flow rate (*)
  BT Flow rate (DET)
Sewage irrigation (*)
  BT Irrigation  (ENT)
  RT Greenbelt irrigation (*)
     Land disposal (*)
     Liquid waste disposal (*)
     Sewage (DENT)
     Sewage disposal (DET)
     Ultimate disposal (*)
     Waste disposal (DENT)
Sewage sludge (E)
  BT Sludge (DNT)
  DEF Semiliquid waste resulting from sedimentation
    of solids from raw sewage or sewage treatment
     processes.
Sewage treatment (DT)
  NT Chemical  removel(Sewage treatment) (T)
     Microorganism control(Sewage) (T)
     Physical chemical treatment (*)
     Secondary sewage treatment (*)
     Shipboard sewage treatment systems (*)
     Tertiary treatment (*)
  RT Activated  carbon treatment (T)
     Activated sludge  process (DET)
     Aeration (DENT)
     Aeration ponds (*)
     Aerobic processes (DT)
     Ammonia stripping (*)
     Anaerobic lagoons (*)
     Anaerobic processes  (DT)
     Chlorination (DENT)
     Clarification (T)
     Coagulation (DNT)
     Concentrating (NT)
     Denitration (*)
     Denitrification (*)
     Dewatering (T)
     Digestion(Decomposition) (T)
     Disinfection (DT)
     Enzyme technology (*)
     Flocculating (NT)
     Flotation (DENT)
     Foam fractionation (*)
     Ion exchanging (NT)
     Irradiation (DENT)
     Lagoons(Ponds) (T)
     Methane bacteria (*)
     Nitrification (T)
     Oxygenation (NT)
     Ozonization (T)
     Precipitation (Chemistry) (N)
     Precipitation(Chemistry) (T)
     Rotating disc  process (*)
     Settling (NT)
     Shock loading(Sewage treatment) (*)
56

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     Sludge digestion (T)
     Sludge treatment (*)
     Thickening (T)
     Wet oxidation (*)
Sewage treatment effluents (*)
  BT Effluents (DNT)
  RT Sewage (DENT)
     Water pollution (DENT)
Sewage treatment plants (*)
  BT Industrial  plants (DENT)
Sewer pipes (T)
Sewer surcharges  (*)
  RT Tax surcharges (*)
     Taxes (DET)
     Water rates  (*)
Sewers  (T)
  NT Combined sewers (T)
     Outfall sewers (T)
     Interceptor sewers (*)
     Storm sewers (T)
  RT Catch basins (T)
     Overflows (T)
     Storm water  runoff (*)
     Urban hydrology (*)
SF Nateko process (E)
  RT Air pollution control (*)
     Sulfur oxides (DENT)
  DEF Sulfur  removal  process for stack gases
     by countercurrent contact with lime slurry.
Shellfish (DT)
  BT Aquatic animals (DT)
  NT Cladocera (T)
     Crustacea (DT)
        Barnacles (DT)
       Crabs (DNT)
        Lobster (D)
        Lobsters (ET)
        Shrimp (DE)
        Shrimps (T)
Shipboard sewage treatment systems  (*)
  BT Sewage treatment (DET)
Ships (DENT)
  RT Boats (DNT)
Shock loading (Sewage treatment) (*)
  RT Sewage treatment (DET)
Shopping centers (T)
Shore protection  (T)
  RT Bank protection(Waterways) (T)
     Beach erosion (DT)
Shores  (DET)
  BT Topographic features (T)
  RT Coastal  topographic features (T)
    Coasts (DNT)
    Lakes (DENT)
    Oceans (DENT)
Shredders (T)
Shredding (DNT)
  BT Comminution (DENT)
Significant deterioration (Air pollution) (*)
  DEF The deterioration of an area's air that
     is cleaner than the US standards so that
     it  reaches the pollutant  level of these
     standards.
Silicosis (ET)
  BT Respiratory diseases (DNT)
  RT Air pollution effects(Humans) (*)
     Industrial medicine (DET)
     Occupational diseases (DET)
Single  cell protein  (E)
  BT Proteins (DENT)
  RT Animal feeds (E)
     Feeding  stuffs (T)
Sinking agents  (*)
  RT Oil pollution control (*)
     Water pollution control  (*)
Sinks(Biosphere) (*)
  RT Biosphere (EN)
     Ecosystems (DEN)
SIPS(State Implementation  Plans) - USE:
    Implementation air pollution planning program (*)
Site  selection (DE)
  RT Economic impact (*)
     Environmental impacts (*)
     Reactor sites (E)
     Social effect (*)
Site  surveys  (T)
  RT Economic factors (NT)
     Economic surveys (T)
     Environmental surveys (NT)
     Plant location (T)
Sites (DNT)
Size  screening  (T)
  BT Size separation  (NT)
Skimmers (ET)
  RT Oil pollution removal (*)
Skin cancer (T)
  BT Cancer (DN)
     Malignant neoplasms (T)
Sky brightness (DNT)
  RT Haze (DNT)
Slagging pyrolysis process (E)
  BT Waste processing (E)
  DEF Andco-Torrax process for gasification
    of unprocessed solid waste and recovery
     of energy in waste heat  boiler  of special
    design for steam and/or  power generation.
Slaughtering house wastes (*)
  RT Food processing (DT)
     Paunch (*)
     Solid wastes (DE)
     Water pollution  (DENT)
Sludge (DNT)
  NT Sewage sludge (E)
Sludge digestion (T)
  BT Digestion(Decomposition) (T)
Sludge disposal (T)
                                                                                              57

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   BT Solid waste disposal (*)
     Waste disposal (DENT)
   RT Earth fills (DT)
      Land disposal (*)
 Sludge drying (T)
   BT Drying  (DENT)
 Sludge treatment (*)
 Sludges  (E)
 Smelters (T)
 Smelting (DENT)
   RT Metal industry (T)
 Smog (DENT)
   RT Aerosols (DENT)
      Haze (DNT)
      Photochemical reactions (DNT)
 Smoke (DNT)
   RT Combustion products (DENT)
      Particles (DENT)
      Particulates  (D)
 Smoke abatement (DNT)
   RT Air  pollution abatement (E)
      Smoke  detectors (*)
 Smoke stacks (D)
   RT Chimneys (DENT)
      Stacks (E)
 Smokemeters (*)
   RT Detectors (DNT)
 Snowmelt  (T)
   RT Runoff (T)
      Surface water runoff (T)
 Social effect (*)
 Social factors (N)
 Social planning  (*)
 Socio-economic factors (E)
   RT Economic factors (NT)
 Sociology (DENT)
   NT Rural sociology (T)
      Urban sociology (T)
   RT Quality of life (*)
 Soil analysis (T)
   RT Chemical analysis  (DENT)
 Soil bacteria (*)
   BT Bacteria (DENT)
 Soil chemistry (T)
   RT Agronomy (DT)
      Environmental persistence (*)
      Pesticide residues (*)
      Residues (DENT)
 Soil classification  (DT)
 Soil conservation (T)
   BT Conservation (DNT)
   RT Agricultural engineering (T)
      Contour farming (T)
      Cultivation (NT)
      Dust control (DT)
      Erosion control (T)
      Land development  (T)
      Land restoration (*)
     Reforestation (DT)
     Soil erosion (DNT)
     Strip cropping  (T)
     Terracing (T)
     Water conservation (DT)
     Wind erosion (NT)
Soil  erosion (DNT)
  BT Erosion (DENT)
  NT Beach erosion (DT)
     Piping(Erosion) (T)
  RT Cultivation  (NT)
     Dust storms  (DNT)
     Erosion control (T)
     Landslides (DENT)
     Reforestation (DT)
     Runoff (DT)
     Soil conservation (T)
     Water erosion  (T)
     Wind erosion (NT)
Soil  fertility (T)
  RT Plant growth (DET)
     Plant nutrition  (T)
Soil  microbiology (T)
  BT Microbiology (DNT)
Soil  science (DNT)
Soil  stabilization (DT)
Soil  surveys (DT)
Soil  tests  (DT)
Soil  water (T)
  BT Water (DENT)
  NT Capillary water  (T)
     Hygroscopic water (T)
Soiling index  (*)
  RT Air pollution effects(Materials)  (*)
Soils  (DENT)
Solid waste abatement  (*)
  NOTE: NTIS uses  this term only to express
     the prevention  of solid wastes by design
     changes or planning  to stop the wastes
     from ever being formed.
Solid waste collection systems  (*)
  RT Waste recycling  centers (*)
     Waste transfer stations (*)
Solid waste disposal (*)
  BT Waste disposal (DENT)
  NT Garbage disposal (DT)
     Junk car  disposal (*)
     Refuse disposal (T)
     Sludge disposal (T)
  RT Bailie process  (E)
     Biogas process (E)
     Black Clawson  system (E)
     Color separation (DT)
     Earth fills (DT)
     Incinerators (DENT)
     Land disposal  (*)
     Liquid waste disposal (*)
     Marine disposal  (E)
58

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    Materials recovery (ENT)
    Ocean waste disposal (D)
    Purox pyrolysis process  (E)
    Recycled materials (D)
    Refuse disposal (T)
    Salvage (DT)
    Sanitary landfills (E)
    Secondary materials industry (*)
    Sludge disposal (T)
    Radioactive waste disposal (E)
    Waste processing (E)
    Waste processing plants (E)
    Waste recycling (D)
    Waste recycling centers (*)
    Waste transfer stations  (*)
    Waste treatment (DT)
    Waste utilization (N)
Solid Waste Disposal Act (*)
  BT Law (Jurisprudence (N)
    Law(Jurisprudence)  (DT)
    Laws (EN)
    Legislation (DET)
  RT Solid waste disposal  (*)
    Solid wastes (DE)
  NOTE: Enacted in 1973
    Waste utilization (N)
Solid waste management  (*)
  BT Management (DENT)
Solid waste processing -  USE:
    Waste processing (E)
Solid waste treatment - USE:
    Waste treatment (DT)
Solid wastes (DE)
  BT Wastes (DENT)
  NT Coal refuse (*)
    Dredge spoil (*)
    Garbage (DNT)
    Hospital solid wastes (*)
  RT Agricultural wastes (ET)
    Bagasse (ET)
    Beverage containers (*)
    Bottles (DNT)
    Boxes (Containers) (N)
    Boxes(Containers) (T)
    Cans (NT)
    Containers (DENT)
    Disposable  containers (*)
    Domestic wastes (*)
    Dredging (DT)
    Fly ash (DET)
    Glass (DENT)
    Hazardous materials (T)
    Human wastes (N)
    Industrial wastes (ENT)
    Litter (*)
    Manure (*)
    Metal scrap (T)
    Metal scraps (D)
     Mine wastes (T)
     Mineral wastes (E)
     Organic wastes (ET)
     Packaging materials (DT)
     Pollution (DENT)
     Recycled paper (*)
     Refuse (ET)
     Scrap (NT)
     Sewage sludge (E)
     Sludge (DNT)
     Solid waste disposal (*)
     Spoil (DT)
     Tailings (ET)
     Tires (DENT)
     Waste papers (T)
     Wastes(lndustrial) (D)
     Wood chips (*)
     Wood wastes (T)
Solvents (DENT)
  NT Organic  solvents (DET)
Sonic boom (DT)
  BT Noise (Sound) (N)
     Noise(Sound) (DT)
  RT Aircraft  noise' (DNT)
     Noise pollution (DN)
     Supersonic flight (DNT)
Sonic booms (N)
Sonic chokes (*)
  RT Noise reduction (DNT)
Soot (DNT)
  RT Air pollution (DENT)
     Particles (DENT)
     Particulates (D)
Sorting (DEN)
  BT Separation (DNT)
  RT Classifying  (NT)
     Color separation (DT)
     Solid waste disposal (*)
     Waste processing (E)
Sound analyzers (DT)
  BT Acoustic measuring instruments (T)
  RT Acoustic detectors (DT)
     Frequency analyzers (DNT)
     Frequency meters (DT)
     Noise meters (NT)
Sound level meters (T)
  BT Acoustic measuring instruments (T)
  RT Acoustic detectors (DT)
     Effective perceived noise levels (N)
     Frequency meters (DT)
     Noise meters (NT)
Sound pressure (DNT)
Sound propagation (N)
  RT Sound transmission (T)
Sound transmission (DNT)
  RT Sound propagation (N)
Sound waves (DENT)
Sour crudes (ET)
                                                                                               59

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   BT Petroleum (E)
   RT High sulfur fuels (*)
      Hydrogen sulfide (DNT)
      Sulfur (DENT)
   DEF Crude oils containing an abnormally
      large amount of sulfur and sulfur com-
      pounds.
 Sources (DNT)
   NT Nonpoint sources (*)
      Point sources (EN)
      Radiation sources  (EN)
      Stationary sources (*)
 Spectroscopic  analysis (NT)
   BT Chemical analysis (DENT)
   RT Atomic spectroscopy (DT)
      Colorimetric  analysis (DT)
      Infrared spectroscopy (DNT)
      Laser spectroscopy (*)
      Ultraviolet spectroscopy (DNT)
      X ray fluorescence (NT)
 Spent liquors(Pulping) (T)
   BT Industrial wastes (ENT)
   NT Black liquors (T)
      Spent sulfite liquors (T)
   RT Cooking  liquors(Pulping) (T)
      Paper industry  (DT)
      Paper mills (T)
      Papermaking (T)
      Water pollution (DENT)
 Spoil (DT)
   NT Coal mine spoil (*)
      Dredge spoil (*)
   RT Coal refuse  (*)
      Dredging  (DT)
      Mine wastes (*)
      Solid wastes (DE)
      Tailings (ET)
   DEF Solid wastes  (usually soil  and rock)
      generated from earth excavation.
 Spoil banks (E)
   BT Solid wastes (DE)
   RT Land reclamation  (E)
      Mine wastes (*)
      Mineral wastes (E)
      Solid wastes (DE)
      Spoil (DT)
   DEF Banks of disturbed earth, mine wastes,
      tailings, etc.
 Spray cooling (E)
   RT Cooling  systems (ENT)
 Spray irrigation systems  (*)
   BT Irrigation systems (D)
 Spray propellents (*)
   UF Aerosol spray  propellents
   RT Aerosol spray containers (*)
      Air pollution (DENT)
 Stabilization  (DENT)
   NT Chemical stabilization (T)
  RT Sewage treatment (DET)
     Water pollution control (*)
Stack disposal (E)
  RT Air pollution control (*)
Stack gases - USE:
     Flue gas (E)
     or
     Flue gases (DT)
Stacks (E)
  RT Chimneys (DENT)
     Smoke stacks (D)
Standard metropolitan statistical areas (*)
  BT Metropolitan areas (*)
  RT Urban areas (DET)
Standards (DENT)
  NT Air pollution standards (*)
     Noise standards (*)
     Performance standards (T)
     Water pollution  standards (*)
Standards compliance (*)
  BT Compliance (E)
State government (DT)
  RT Local government  (T)
     National government (T)
State planning (*)
  BT Planning (DENT)
State programs (*)
Stationary sources  (*)
  BT Sources (DNT)
  RT Nonpoint sources  (*)
     Point sources (EN)
Steam electric power  generation (T)
  BT Electric power generation (T)
Steel industry (D)
  BT Industries (DNT)
  RT Iron and  steel industry  (T)
Steel making  (T)
  RT Iron and  steel industry  (T)
     Steel industry (D)
Sterilization (DENT)
  NT Microwave sterilization (*)
  RT Chlorination (DENT)
     Disinfection (DT)
     Irradiation (DENT)
     Ionizing radiation  (DNT)
Stone and Webster  process (E)
  RT Air pollution control (*)
Storage and retrieval  of aerometric data  (*)
  UF Saroad
  RT Air Quality data  (*)
Storm sewers (T)
  BT Sewers (T)
  RT Catch basins (T)
     Combined sewers  (T)
     Outfall sewers (T)
     Storm water runoff (*)
     Surface water runoff (T)
Storm water drainage (*)
60

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  BT Drainage (DNT)
  RT Surface drainage (T)
Storm  water runoff  (*)
  BT Runoff (T)
  RT Surface drainage (T)
     Surface water runoff (T)
     Urban hydrology (*)
Strategy (DNT)
  RT Air quality maintenance (*)
     Implementation air pollution planning(*)
Stratification  (DENT)
  NT Thermal  stratification (*)
  RT Destratification (*)
     Reservoirs (DNT)
Stratified charge engines (ET)
  BT Engines (DENT)
  RT Automobile  engines (NT)
     Internal combustion engines (ENT)
Stratosphere  (DET)
Stream erosion (T)
  BT Erosion (DENT)
  RT Water erosion (T)
Stream flow (T)
  BT Liquid flow  (ENT)
     Water flow (DNT)
  RT Flood routing (T)
     Hydrology (DENT)
Stream pollution (T)
  BT Pollution (DENT)
     Water pollution (DENT)
  NOTE: NTIS uses this term to express
     studies concerned with the hydrology,
     limnology, or water chemistry of  pollutants
     in rivers or streams.
Stream stabilization - USE:
     Channel stabilization (T)
Streams (DENT)
  NT Rivers (DENT)
     Underground streams (T)
Stress  (Physiology)  (N)
Stress  (Psychology) (N)
Stress (Physiology) (DT)
  RT Biological stress  (E)
Stress (Psychology) (DT)
Stretford process (E)
  RT Claus process (E)
     Waste gas recovery (*)
  NOTE: In this process H2S is  converted
     to sulfur.
Strip mine wastes (*)
  BT Mine  wastes (*)
Strip mining (NT)
  BT Mining (ENT)
Substitutes (DNT)
  NT Environmental chemical substitutes (*)
Subsurface drainage (T)
  BT Drainage (DNT)
  RT Ground water (DENT)
Subsurface irrigation  (T)
  BT Irrigation (ENT)
  RT Surface irrigation (T)
Suburban  areas (N)
  RT Cities (NT)
     Metropolitan areas (*)
     Municipalities (DT)
     Residential areas (N)
     Rural areas (DENT)
     Rural  urban  fringe (T)
     Standard metropolitan areas (*)
     Urban areas (DET)
Sugar  beet processing (*)
  BT Food  processing (DT)
Sugar  industry (*)
  BT Industries (DNT)
Sulfate pulping (T)
  BT Chemical pulping  (T)
     Pulping (T)
  RT Kraft  paper (T)
     Papermaking (T)
Sulfate pulps (T)
  BT Chemical pulps (T)
     Pulps  (T)
  RT Dissolving pulps (T)
     Kraft paper (T)
Sulfation (DNT)
  RT Chemical reactions (DENT)
Sulfite cooking liquors (T)
  BT Cooking  liquors(Pulping) (T)
  RT Spent sulfite liquors (T)
Sulfite paper (T)
  BT Papers (NT)
Sulfite pulping  (T)
  BT Chemical pulping  (T)
     Pulping (T)
Sulfite pulps  (T)
  BT Chemical pulps (T)
     Pulps  (T)
  RT Paper mills (T)
     Papermaking (T)
     Pulp mills (DT)
     Pulping (T)
Sulfox process (E)
  RT Air pollution control  (*)
     Sulfur oxides (DENT)
     Waste gas recovery (*)
  DEF  Conversion of hydrogen sulfide in some
     refinery gas or water streams to high-purity
     molten sulfur.  Process operates on  aqueous
     solution of ammonia and hydrogen  sulfide,
     which may be  refinery sour water  or rich
     solution obtained by absorbing hydrogen
     sulfide from  refinery gas with aqueous
     ammonia recycled from a Sulfox unit.
Sulfuric  acid plants (*)
  BT Chemical plants  (T)
     Industrial plants (DENT)
                                                                                                61

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 Superports - USE:
      Deepwater terminals (N)
 Supersonic aircraft (DNT)
   BT Aircraft (DENT)
      Airplanes (DT)
   NT Concorde aircraft (N)
      Supersonic commercial air transport (N)
      Supersonic transports (DNT)
   RT Air pollution  (DENT)
      Commercial aircraft  (DNT)
      Jet aircraft (DNT)
      Noise pollution (DN)
      Sonic  boom (DT)
      Sonic  booms (N)
 Supersonic commercial air transport (N)
 Supersonic flight  (DNT)
   RT Sonic boom (DT)
      Sonic  booms (N)
 Supersonic transport (E)
   BT Aircraft (DENT)
 Supersonic transports (DNT)
   BT Aircraft (DENT)
      Airplanes (DT)
   RT Commercial aircraft (DNT)
      Jet aircraft (DNT)
      Supersonic aircraft (DNT)
 Supertankers (*)
   BT Tanker ships (ENT)
      Tankers (DN)
 Supplementary air pollution abatement (*)
   BT Air pollution abatement (E)
   DEF Methods to achieve short term ground
      level air quality and  therefore supplement
      the installation of permanent control options.
 Surface drainage (T)
   BT Drainage (DNT)
      Runoff (DT)
   RT Storm water drainage (*)
      Subsurface drainage (T)
 Surface irrigation (T)
   BT Irrigation (ENT)
      Sewage irrigation (*)
   RT Sprinkler irrigation (T)
      Subsurface  irrigation (T)
 Surface mining (ET)
   BT Mining (ENT)
 Surface water (N)
 Surface water runoff  (T)
   BT Runoff (DT)
      Surface waters (DET)
   RT Storm sewers (T)
      Storm  water runoff (*)
      Surface drainage (T)
      Urban hydrology  (*)
 Surface waters  (DET)
   BT Water (DENT)
   RT Brackish water (DT)
      Fresh  water (DET)
     Lakes (DENT)
     Ponds (DENT)
     Reservoirs (DNT)
     Rivers (DENT)
     Salt water (DT)
     Sea water (DNT)
     Streams (DENT)
Suspended sediments (T)
  BT Sediments (DENT)
  RT Bed load (T)
     Planktonic sediments (T)
Swamps (DENT)
  RT Marshes (E)
     Marshlands (N)
     Muskeg (DT)
     Muskegs (N)
     Salt marshes (*)
Symap computer program (*)
  BT Computer programs (DENT)
  RT Air  pollution (DENT)
  RT Manufactured gas (T)
     Synthane (N)
Synthetic foods  (*)
Synthetic fuels (DEN)
  NT Blast furnace gas (T)
     Coke oven gas (E)
     Manufactured gas (T)
     Producer gas (E)
     Synthane (N)
     Synthesis gas (E)
     Synthetic petroleum (E)
  RT Biogas  process (E)
     Feedstocks (*)
     Fisher-Tropsch synthesis (E)
     Purox pyrolysis process (E)
Synthetic petroleum  (E)
  RT Feedstocks (*)
Tailings  (ET)
  BT Solid wastes (DE)
     Coal refuse  (*)
     Mine wastes (T)
     Solid wastes (DE)
     Spoil (DT)
  DEF Solid wastes left after ore or mineral
     processing.
Tanker ships (ENT)
  BT Ships (DENT)
  NT Supertankers (*)
  RT Petroleum (E)
     Transport (E)
Tanker terminals (N)
  RT Deepwater terminals (N)
     Deep water oil terminals (E)
Tankers  (DN)
  BT Ships (DENT)
Tax  incentives (*)
Tax  surcharges (*)
  RT Sewer surcharges (*)
62

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     Water rates (*)
Taxes  (DET)
  RT Sewer surcharges (*)
     Tax incentives (*)
     Tax surcharges (*)
     Water pollution taxes(Charges) (*)
Temperature inversion (D)
Temperature inversions (ENT)
  RT Air pollution (DENT)
     Atmospheric echo sounding (*)
     Atmospheric temperature (DN)
     Smog (DENT)
     Urban heat islands (*)
     Atmospheric motion (DT)
Terminal facilities  (NT)
  NT Marine terminals (DT)
  RT Deepwater oil  terminals (E)
     Deepwater terminals (N)
     Tanker terminals  (N)
Terrestrial  ecosystems (E)
  BT Ecosystems (DEN)
  RT Aquatic ecosystems (E)
     Ecology (DENT)
Tertiary treatment (*)
  BT Sewage treatment (DT)
  RT Physical chemical treatment (*)
Tests (NT)
  NT Chemical  tests (NT)
     Environmental tests (DNT)
     Field tests  (DT)
     Performance testing  (E)
     Performance tests (DNT)
     Radiation tests (DT)
     Soil tests (DT)
     Well tests (T)
Textile finishing (T)
Textile industry (DT)
  BT Industries (DNT)
Textile processes (T)
  RT Dyeing (T)
Thermal effluents  (E)
  UF Heated effluents (E)
  BT Pollution  (DENT)
  RT Cold effluents  (E)
     Thermal pollution (DEN)
     Waste heat (E)
     Waste heat utilization (*)
     Water pollution (DENT)
Thermal pollution  (DEN)
  BT Pollution (DENT)
  BT Pollution (DENT)
  RT Air pollution (DENT)
     Cold effluents (E)
     Thermal effluents (E)
     Waste heat (E)
     Waste heat utilization (*)
     Water pollution (DENT)
Thermal power plants (DET)
  BT Electric power plants (DNT)
     Power plants (EN)
  NT Fossil-fuel power plants (E)
     Geothermal power plants (E)
     Nuclear power plants (DENT)
     Offshore nuclear  power plants (E)
     Orbital solar power plants (E)
     Solar sea power plants (E)
     Solar thermal  power plants (E)
Thermal stratification (*)
  BT Stratification (DENT)
  RT Destratification (*)
     Reservoirs (DNT)
Tidal marshes  (*)
  BT Marshes (E)
  RT Salt marshes (*)
     Swamps  (DNT)
Tidewater (DT)
  BT Water (DENT)
Tile  drains (T)
  RT Drainage (DNT)
     Subsurface drainage (T)
Tire  noise (*)
  BT Noise (Sound)  (N)
     Noise(Sound) (DT)
  RT Highway noise (*)
Tire  recycling (*)
  BT Waste recycling (*)
Tires (DENT)
  NT Automobile tires (T)
  RT Solid wastes (DE)
Tolerances (Physiology)  (N)
Tolerances (Physiology)  (DT)
  NT Heat tolerance (DNT)
     Human tolerances (N)
     Radiation tolerances (DNT)
     Toxic tolerances (DT)
Topographic  features (T)
  NT Bays (Topographic features) (N)
     Bays(Topographic features) (T)
     Beaches (DNT)
     Coastal topographic features (T)
     Coasts (DNT)
     Continental shelf (E)
     Continental shelves  (DNT)
     Deltas (DNT)
     Dunes (DNT)
     Estuaries (DENT)
     Glaciers (DENT)
     Gulfs (DNT)
     Hills (T)
     Inlets (Topography)  (N)
     Inlets(Waterways) (DT)
     Islands (DEN)
     Islands(Landforms) (T)
     Lagoons(N)
     Lagoons(Landforms)  (DT)
     Lakes (DENT)
                                                                                               63

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     Marshlands (N)
     Marshes (*)
     Mountains (DENT)
     Muskeg (DT)
     Muskegs (N)
     Oceans (DENT)
     Plains (NT)
     Reefs (DNT)
     River basins (NT)
     Rivers (DENT)
     Salt  water marshes (*)
     Shores (DET)
     Swamps (DENT)
   RT Deserts (DENT)
 Total suspended particulates  (*)
   BT Particles (DENT)
   RT Air  pollution (DENT)
 Towns -  USE:
     Municipalities  (DT)
 Toxic Substances Control Act  (*)
   BT Law (Jurisprudence)  (N)
     Law(Jurisprudence) (DT)
     Laws (EN)
     Legislation  (DET)
 Toxic agent alarms  (DT)
   BT Detectors (DNT)
   RT Warning systems (DNT)
 Toxic diseases (NT)
   NT Benzene poisoning (N)
     Botulism (T)
     Carbon monoxide poisoning (DNT)
     Carbon tetrachloride poisoning (N)
     Fluoride poisoning (T)
     Hydrocarbon poisoning (N)
     Lead poisoning (NT)
     Mercury poisoning (T)
   RT Food poisoning  (DT)
     Methemoglobinemia (T)
     Occupational diseases (DET)
     Toxicity (DENT)
 Toxic hazards (DN)
   BT Hazards (DENT)
 Toxic tolerances (DT)
 Toxicity  (DENT)
   RT Detoxification (DT)
     Poisons (DNT)
     Toxic diseases (NT)
     Toxicology (DENT)
   NOTE:  NTIS uses this term only when a report
     discusses the measurement of the effects
     versus the concentration of the substance.
 Toxicity and safety hazard (N)
 Toxicology (DNT)
   RT Air  pollution effects(Animals) (*)
     Air pollution effects(Humans) (*)
     Air pollution effects(Plants) (*)
     Contaminants  (DNT)
     Hazards (DENT)
     Occupational diseases (DET)
     Pathology (DNT)
     Poisons (DNT)
     Water pollution effects(Animals) (*)
     Water pollution effects(Humans) (*)
     Water pollution effects(Plants) (*)
Trace elements  (DENT)
  RT Heavy metals (D)
     Metals (DENT)
     Nutrients (DENT)
     Trace amounts  (E)
Tracer studies (D)
  RT Air pollution (DENT)
     Krypton 85  (ENT)
     Plumes (DENT)
     Sulfur hexafluoride (T)
     Sulfur fluorides (ENT)
     Water pollution (DET)
Tracer techniques  (E)
Traces (N)
Tradeoffs (N)
Traffic congestion  (*)
Traffic noise (*)
  BT Noise (Sound)  (N)
     Noise(Sound) (DT)
  RT Highway transportation (T)
     Motor vehicles  (T)
     Urban transportation (NT)
     Vehicle noise (*)
Trans Alaska pipeline (*)
  BT Petroleum pipelines (T)
  RT Alaska oil pipeline (E)
     Alaska  pipeline (E)
Transmissometers  (DNT)
  BT Detectors (DNT)
Transportation (DNT)
  NT Air transportation (DNT)
     Cargo transportation  (T)
     Commercial  transportation (T)
     Hazardous materials transportation (D)
     Highway transportation  (T)
     Marine transportation (DT)
     Passenger transportation (T)
     Pipeline  transportation  (T)
     Rail transportation (DNT)
     Rail transport (E)
     Urban transportation (NT)
     Water transportation  (T)
     Waterway transportation (T)
  RT Bus lines (T)
     Transportation  systems (E)
Transportation management (T)
  RT Air pollution abatement (E)
     Noise pollution abatement (*)
     Traffic engineering (T)
     Vehicular traffic control (T)
     Water pollution abatement (DE)
Transportation noise (*)
64

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  BT Noise (Sound) (N)
     Noise(Sound) (DT)
  RT Airport and Airway Development Act
       of 1970 (*)
     Engine noise (DNT)
     Federal Aid Highway  Act (*)
     Internal combustion engine  noise (DT)
     Motor noise (T)
     Tire noise (*)
     Traffic noise (*)
     Vehicle noise (*)
Transportation planning  (*)
  BT Planning (DENT)
     Transportation systems (E)
Trash - USE:
     Refuse (ET)
Trash disposal - USE:
     Refuse disposal (T)
Trees (DEN)
  RT Trees (Plants) (N)
     Trees(Plants) (T)
Trees (Plants)  (N)
Trees (Plants)  (T)
Trends (DNT)
  RT Forecasting (DENT)
Trickling filtration  (T)
  BT Filtration (DENT)
  RT Sewage treatment (DT)
Trucks (DENT)
  BT Ground  vehicles (DT)
     Motor vehicles (T)
  RT Electric trucks  (T)
     Heavy duty vehicles (*)
     Light duty  vehicles (*)
     Motor trucks (T)
Tundra (DENT)
  RT Arctic regions  (DENT)
     Permafrost (DENT)
     Terrestrial ecosystems (E)
Turbidimeters (DT)
Turbidity (DENT)
Turbulent diffusion (DNT)
  RT Atmospheric diffusion (NT)
TVA - USE:
     Tennessee Valley  Authority  (E)
TYCO process (E)
  RT Waste gas recovery (*)
Ultimate disposal  (*)
  RT Earth fills (DT)
     Injection wells  (ET)
     Irrigation (ENT)
     Land disposal (*)
     Liquid waste disposal (*)
     Sanitary landfills  (*)
     Sewage irrigation (*)
     Solid waste disposal (*)
Ultrafiltration (DE)
Ultrasonic injuries  (T)
  RT Auditory defects (DNT)
Underground disposal (E)
  RT Injection wells (ET)
     Liquid waste disposal (*)
     Solid waste disposal (*)
     Waste disposal (DENT)
Underground storage (NT)
  RT Solid waste disposal (*)
Unleaded gasoline (E)
  UF Lead-free gasoline
  BT Gasoline (DENT)
Unregulated emissions  (*)
Urban areas (DET)
  RT Blighted areas (T)
     Builtup  areas (T)
     Cities (NT)
     Central city (T)
     Communities (DENT)
     Industrial areas (N)
     Megalopolis (T)
     Megalopolises (N)
     Metropolitan areas (*)
     Municipalities (DT)
     Neighborhoods (T)
     Residential areas (N)
     Rural areas (DENT)
     Rural urban fringe (T)
     Standard  metropolitan statistical areas (*)
     Suburban  areas (N)
Urban development (NT)
  RT Community development (T)
     Economic development (ENT)
     Land development (T)
     Land use (DENT)
     Regional planning (NT)
     Urban planning (DNT)
     Urban renewal  (T)
     Urbanization (T)
Urban geography (T)
Urban heat islands (*)
  RT Air  pollution (DENT)
     Smog (DENT)
     Temperature inversions (NT)
Urban hydrology (*)
  BT Hydrology (DENT)
  RT Drainage (DNT)
     Runoff  (DT)
     Storm water runoff (*)
     Surface drainage (T)
     Surface water runoff (T)
Urban planning (DNT)
  BT Planning (DENT)
  RT Airport planning  (N)
     Community planning (*)
     Flood plain zoning  (T)
     Highway planning (T)
     Land use (DENT)
     Land use zoning (T)
                                                                                              65

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     Municipal engineering  (T)
     Neighborhoods (T)
     Regional planning (NT)
     Urban development (NT)
     Urban sociology (T)
     Urban transportation (NT)
     Urbanization (T)
     Zoning (T)
 Urban relocation (T)
   BT Relocation (DNT)
   RT Regional  planning (NT)
     Urban renewal (T)
 Urban renewal  (T)
   RT Blighted areas (T)
     Central city (T)
     Community development (T)
     Urban areas (DET)
     Urban development (NT)
     Urban relocation  (T)
     Urbanization (T)
 Urban sociology (T)
   BT Sociology (DENT)
   RT Quality of life (*)
     Social change (T)
     Rural sociology (T)
 Urban transportation  (NT)
   BT Transportation (DNT)
 Urbanization  (T)
   RT Community development (T)
     Land use  (DENT)
     Urban development (NT)
     Urban planning (DNT)
     Urban renewal (T)
 Utilization (DNT)
   NT  Waste heat utilization (*)
     Waste utilization  (N)
   RT Materials recovery (DENT)
     Reclamation (DNT)
     Technology  utilization  (N)
     Waste gas recovery (*)
     Waste recycling (D)
     Waste water reuse (*)
 Vegetation (DNT)
 Vegetation growth (N)
   RT Plant growth (DET)
 Vehicle noise  (*)
   BT Noise (Sound) (N)
     Noise(Sound) (DT)
   RT Highway  transportation (T)
     Motor vehicles (T)
     Noise annoyance  (*)
     Noise  pollution (DN)
     Noise reduction (DNT)
     Traffic noise (*)
     Urban transportation (NT)
 Vehicular traffic (T)
 Vehicular traffic control (T)
 Vibration damping (NT)
  RT Noise reduction (DNT)
Vibration isolators (DNT)
  RT Noise reduction (DNT)
Viruses (DENT)
Vortex separators  (*)
  BT Separators (DNT)
Warning systems (DNT)
  RT Detectors (DNT)
    Toxic agent alarms (DT)
Washout  (E)
  RT Acid rain (E)
     Precipitation (Meteorology)  (N)
     Precipitation(Meteorology) (T)
     Precipitation washout (*)
Waste disposal  (DENT)
  NT Liquid waste disposal (*)
    Marine disposal (E)
    Ocean waste disposal (*)
     Radioactive waste disposal  (E)
     Solid waste disposal (*)
    Underground disposal (E)
  NOTE:  NTIS uses this term only for solid
    waste disposal  or for the disposal of
    concentrated liquids.
Waste gas recovery (*)
  RT Activated carbon treatment (T)
    Adsorption (DENT)
    Air pollution control (*)
    Amoco sulfur recovery process (E)
     Beavon process (E)
    Catalysts (DENT)
    Catalytic chamber process (*)
    Cat-ox process (E)
    Claus  process (E)
    Magnesium  oxide scrubbing (*)
    Molten carbonate process (E)
    Potassium formate process (*)
     Reduction (Chemistry) (N)
     Reduction(Chemistry) (T)
    Regeneration (Engineering) (N)
     Regeneration(Engineering) (T)
    Stretford process (E)
    Sulfox process  (E)
    Tyco  process (E)
    Wellman process  (*)
    Westvaco process (*)
Waste heat (E)
  BT Wastes (DENT)
  RT Air pollution (DENT)
    Thermal effluents (E)
    Thermal pollution (DEN)
    Water pollution (DENT)
Waste heat utilization (*)
  BT Waste utilization (N)
  RT Thermal effluents (E)
    Thermal pollution (DEN)
     Waste heat (E)
    Waste water reuse (*)
66

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Waste management  (DE)
  NOTE: This is a very general term and is
     not used  unless a report is very
    general and discusses many types of wastes.
Waste papers (T)
  BT Paper (DE)
     Papers (NT)
     Solid wastes (DE)
  RT Newsprint (T)
     Recycled  papers (*)
Waste processing  (E)
  NT  Radioactive waste processing  (ET)
  RT Bailie process  (E)
     Biogas process (E)
     Black Clawson system (E)
     Fluidized bed  refuse gasification (E)
     Purox pyrolysis process (E)
     Refuse  derived fuels (E)
     Solid waste disposal (*)
  NOTE: NTIS uses this term only for solid
     waste processing.
Waste processing  plants  (E)
  BT Industrial plants (DENT)
     Solid waste disposal (*)
  NT  CPU-400 combustion  plant (E)
  RT Solid waste disposal (*)
  NOTE-. NTIS uses this term only for solid
     waste processing  plants.
Waste recycling  (D)
  NT Glass  recycling (*)
     Metal recycling (*)
     Plastics recycling (*)
     Paper recycling (*)
     Scrap recycling (*)
     Tire recycling  (*)
  RT Materials recovery (DENT)
     Reclamation (DNT)
     Salvage (DT)
    Secondary materials industry (*)
     Solid waste disposal (*)
  NOTE: Used by NTIS only to express the
     reuse of solid  wastes.
Waste recycling  centers (*)
  RT Solid waste collection systems (*)
     Solid waste disposal (*)
Waste transfer stations (*)
  RT Solid waste collection systems (*)
     Solid waste disposal (*)
  NOTE: Only used when concerned with solid
     or concentrated liquid  wastes.
Waste treatment  (DT)
  UF  Solid waste treatment
  RT Solid waste disposal (*)
    Waste processing (E)
  NOTE: NTIS uses this term only to cover
    the treatment of solid  or  concentrated
     liquid wastes.
Waste utilization  (N)
  NT Waste heat utilization (*)
  RT Waste gas recovery (*)
    Waste management (DE)
     Waste recycling (D)
     Waste water reuse (*)
  NOTE: NTIS uses this as a general term
     to  cover all types of  wastes.
Waste water (DET)
  RT Cooling water (T)
     Effluents (DNT)
     Industrial water (T)
     Mine waters (T)
     Sewage treatment effluents (*)
     Water pollution (DENT)
Waste water reuse (*)
  RT Water reclamation (DNT)
     Utilization (DNT)
     Waste heat utilization (*)
Waste water treatment - USE:
     Sewage treatment (DT)
     or
     Water pollution control (*)
     or
     Industrial waste treatment (T)
Wastes (DENT)
Wastes(lndustrial) (D)
  RT Air pollution (DENT)
     Industrial wastes (ENT)
     Solid wastes (DE)
     Water pollution (DENT)
Water (DENT)
  NT Absorbed water (*)
     Artesian water (T)
     Brackish water (DT)
     Capillary water (T)
     Coastal water (N)
     Coastal waters (E)
     Connate water (ET)
     Cooling  water (T)
     Distilled  water (DT)
     Feedwater (ET)
     Fresh water (DET)
     Ground water (DENT)
     Heavy water (DENT)
     Industrial water (T)
     Irrigation water (*)
     Mine waters (T)
     Perched water (T)
     Potable water (NT)
     Rain water (E)
     Salt water (DT)
     Sea water (DNT)
     Seawater (E)
     Soil water (T)
     Stagnant water (*)
     Surface waters (DET)
     Tidewater (DT)
     Waste water (DET)
                                                                                                 67

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 Water allocation (Applied) - USE:
     Water distribution (DT)
 Water allocation (Policy) (*)
   RT Water distribution (DT)
 Water analysis  (DT)
   BT Chemical analysis (DENT)
   RT Water pollution detection (*)
 Water chemistry (DET)
   RT Limnology (DENT)
     Sediment water interactions (*)
     Self purification (*)
 Water conservation (DT)
   BT Conservation (DNT)
   RT Agricultural engineering (T)
     Ground water recharge (T)
     Hydrology (DENT)
     Runoff (DT)
     Soil conservation (T)
     Water reclamation (DNT)
 Water consumption (NT)
   BT Consumption (DNT)
   RT Droughts (T)
     Industrial water (T)
     Irrigation (ENT)
 Water costs (*)
   BT Costs (DN)
   RT Water rates (*)
 Water demand  (*)
 Water distribution  (DT)
 Water erosion  (DNT)
   BT Erosion (DENT)
   RT Soil erosion (DNT)
     Stream erosion (T)
 Water flow (DNT)
   BT Liquid flow (ENT)
   NT Stream  flow (T)
   RT Hydrodynamics (DENT)
     Ocean currents (DNT)
     Runoff (DT)
 Water hardness (*)
 Water hyacinth (D)
   BT Aquatic  plants (DT)
     Plants (Botany) (N)
     Plants(Botany) (T)
   RT Eichhornia crassipes (*)
 Water influx (T)
   RT Fluid infiltration (T)
     Ground water recharge (T)
     Salt water intrusion  (T)
     Water influx (T)
 Water law (T)
   BT Law (Jurisprudence)  (N)
     Law(Jurisprudence) (DT)
     Law of the sea (*)
   RT Legislation (DET)
     Water rights (ET)
 Water management  (N)
   BT Management (DENT)
  RT Environment management (N)
     Resources management (N)
Water management(Applied) (*)
  BT Management (DENT)
  RT Selective withdrawal (*)
Water pollution  (DENT)
  BT Pollution (DENT)
  NT Stream pollution  (T)
  RT Boundary Waters Treaty Between Canada
       and the United  States (1901) (*)
     Domestic wastes (*)
     Federal Water Pollution Control Act
       Amendments of 1972 (*)
     Industrial wastes (ENT)
     River and Harbor Act of 1899  (*)
     Safe Drinking Water Act (*)
     Sewage  treatment effluent (*)
     Thermal  pollution (DEN)
     Wastes(lndustrial)  (D)
     Water quality (DENT)
     Water Utilization Treaty of 1944
       Between Mexico and the United States (*)
Water pollution abatement (D)
  NOTE: NTIS uses this  term only when concerned
     with the. prevention of  pollution by changing
     the  design or type  of  polluting source.
     Also used to cover policies or programs
     designed to  limit or stop pollution.
Water pollution contingency plans (*)
Water pollution control (*)
  RT Adsorption (DENT)
     Aeration (DNT)
     Aerobic  processes  (DT)
     Biodeterioration (DT)
     Biological industrial waste treatment (*)
     Breakpoint chlorination (*)
     Bubble separation (*)
     Centrifugal separation (*)
     Clarification (T)
     Coagulation  (DNT)
     Coalescing (NT)
     Combustion (DENT)
     Composting (E)
     Denitration (ET)
     Denitrification (*)
     Demineralizing (NT)
     Desalting (T)
     Dewatering (T)
     Dispersing (DNT)
     Desulfurization (DET)
     Emulsification (ET)
     Filtration (DENT)
     Flocculating  (NT)
     Flotation (DENT)
     Industrial waste treatment (T)
     Ion  exchanging (NT)
     Ion  exchange (DE)
     Irradiation (DENT)
68

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     Microorganism control(Water) (T)
     Neutralization (D)
     Neutralizing (T)
     Oxidation (DENT)
     Precipitation (Chemistry) (N)
     Precipitation(Chemistry) (T)
     Separation (DNT)
     Settling  (NT)
     Sewage treatment (DT)
     Wet oxidation (*)
  NOTE: NTIS uses this term only when
     discussing  or presenting information on
     the techniques or processes for the
     control of pollutants  as they are
     released by a source.
Water pollution control act '72 Amend - USE:
     Federal Water Pollution Control Act
     Amendments of 1972
Water pollution control equipment (D)
  BT Pollution control equipment  (E)
  RT Air pollution  control  equipment (DT)
Water pollution detection (*)
  NT Oil  pollution detection (*)
  RT Chemical  analysis (DENT)
     Water analysis (DT)
  NOTE: NTIS uses this term to cover the
     techniques to  detect or measure
     substances that have  escaped into
     bodies of watfir.  It is not used when
     a substance is still within  the polluting
     source.
Water pollution economics (*)
  BT Economics  (DEN)
Water pollution effects (Animals) (*)
Water pollution effects(Humans) (*)
  RT Blood diseases (DT)
     Methemoglobinemia (T)
     Toxic diseases (NT)
Water pollution effects (Materials)  (*)
  RT Air pollution  effects(Materials) (*)
     Chemical attack(Degradation) (D)
     Degradation (DNT)
     Deterioration  (DNT)
Water pollution effects (Plants)  (*)
Water pollution sampling (*)
  RT Monitoring (DE)
  NOTE: NTIS uses this term only to
     describe the techniques of monitoring
     pollution and includes site selection surveys.
Water pollution standards (*)
  BT Standards  (DENT)
Water pollution taxes (Charges) (*)
  RT Sewer surcharges (*)
     Tax surcharges (*)
     Taxes (DET)
Water pricing  policies (*)
  RT Government policies (ET)
     Policies (DNT)
     Prices (ET)
Water quality (DENT)
  RT Environmental quality (N)
Water quality data (*)
  NOTE: NTIS uses this term only when a
     study  gives actual pollutant concentration
     data for  a specific area or region.
Water quality index (*)
Water quality management (*)
  RT Safe Drinking Water Act (*)
Water rate structures (*)
Water rates (*)
Water reclamation (DNT)
  BT Conservation (DNT)
     Reclamation (DNT)
  RT Desalting  (*)
     Ground water recharge (T)
     Irrigation (ENT)
     Sewage irrigation (*)
     Waste water reuse (*)
Water requirements  (E)
Water reservoirs (E)
  BT Reservoirs (DNT)
Water resources  (DENT)
  RT Water Utilization Treaty of 1944
       Between Mexico and the  United States (*)
    Water Resource Development Act of 1974-PL93-251
Water rights (ET)
  RT Water law (T)
Water runoff  (N)
  BT Runoff (DT)
  NT Storm water runoff (*)
     Surface water runoff (T)
  RT Agricultural  runoff (*)
     Drainage  (DNT)
     Floods (DENT)
     Hydrology (DENT)
     Surface drainage (T)
     Urban hydrology (*)
     Watersheds (DENT)
Water shortage (*)
  RT Droughts (T)
     Low flow (*)
     Water conservation (DT)
     Water demand (*)
Water softening (T)
  BT Water treatment (DENT)
  RT Chemical removal(Water treatment) (T)
     Demineralizing (NT)
     Feedwater treatment (T)
Water supply  (T)
Water table (DT)
Water tables  (N)
Water temperature (N)
Water treatment (DENT)
  NT Chemical removal(Water treatment) (T)
     Feedwater treatment (T)
     Lime-soda ash process (T)
                                                                                               69

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     Microorganism control(Water) (T)
     Water softening (T)
   RT Activated carbon treatment (T)
     Aeration (DNT)
     Carbonation (T)
     Chlorination (DENT)
     Clarification (T)
     Coagulation (DNT)
     Deaeration (DT)
     Demineralizing  (NT)
     Filtration (DENT)
     Flotation (DENT)
     Ion exchanging (NT)
     pH control (T)
     pH factor (DN)
     pH value (E)
     Sanitary engineering (DT)
     Sedimentation (DET)
     Settling (NT)
     Water reclamation (DNT)
   NOTE: NTIS uses this term only to cover
     the treating of water for drinking or
     industrial use. For treatment processes
     before water is to be released into the
     environment, Water pollution control
     or  Sewage treatment  is used.
 Water treatment chemicals (T)
 Water treatment devices (T)
 Water Utilization Treaty of 1944 Between
    Mexico and the United States (*)
   BT Law (Jurisprudence) (N)
      Law(Jurisprudence) (DT)
      Laws (EN)
      Legislation (DET)
   RT International relations (DNT)
     Water pollution  (DENT)
     Water resources (DENT)
 Water wells (DT)
   BT Wells (ENT)
   NT  Artesian wells (T)
 Waterfowl (N)
   BT Birds (DENT)
 Watershed management (*)
 Watersheds  (DENT)
   UF  Drainage basins (*)
   NT  River basins (NT)
   RT Drainage (DNT)
     Hydrology (DENT)
      Runoff (DT)
      Surface  water runoff (T)
 Weather  forecasting (DNT)
 Weather  observations (T)
 Weed control (DT)
   NT  Aquatic weed  control (*)
   RT Herbicides (DET)
 Wellman process (*)
   RT Air pollution control (*)
     Waste gas recovery (*)
  NOTE: In this process SO2 is reacted with
    Na2SO3 to yield NaHSOS.
Wellman-Lord process - USE:
    Wellman process (*)
West  gaeke analysis (*)
  BT Chemical analysis (DENT)
  RT Air pollution detection (*)
Westvaco process (*)
  RT Activated carbon treatment (T)
    Air pollution  control (*)
    Waste gas recovery (*)
  NOTE: In this process SO2 is recovered as
    sulfur by use of an all dry fluidized bed
    using activated carbon.
Wet methods (*)
  RT Dry methods (*)
Wet oxidation  (*)
  BT Oxidation (DENT)
  RT Sewage treatment (DT)
Wetlands (N)
  BT Land (NT)
  RT Marshes (*)
    Marshlands (N)
    Salt marshes (*)
    Swamps (DENT)
Whey (*)
  RT Agricultural wastes (ET)
    Dairy products (DT)
    Food processing (DT)
    Organic wastes (ET)
White liquors (T)
  BT Cooking liquors(Pulping) (T)
  RT Black  liquors (T)
  DEF: Alkaline pulping liquors.
Wilderness (DN)
  RT Deserts (DENT)
    Forests (DEN)
    Land management (N)
    Plains  (NT)
    Remote regions (N)
    Rural areas (DENT)
Wilderness Act (*)
  BT Law (Jurisprudence) (N)
    Law(Jurisprudence) (DT)
    Laws (EN)
    Legislation (DET)
Wilderness areas  (*)
  UF  Primitive areas
  DEF: Extensive natural, wild, and undeveloped
    areas in which  the natural environment
    has not been disturbed by commercial  use.
Wildlife  (DNT)
  BT Animals (DENT)
Wind (Meteorology)  (N)
Wind (Meteorology) (T)
Wood chips (*)
  BT Chips (NT)
  RT Pulpwood  (T)
70

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     Solid wastes (DE)
     Wood wastes (ET)
Wood processing industry (*)
Wood wastes (ET)
  BT Solid wastes (DE)
  RT Bark (T)
     Chips (NT)
     Sawdust (T)
     Shavings (T)
     Wood chips (*)
     Wood flour (T)
Worms  (DNT)
  RT Annelida (DT)
X ray analysis (NT)
  RT Chemical analysis (DENT)
X ray fluorescence  (NT)
  RT Chemical analysis (DENT)
     Spectroscopic analysis (NT)
X ray radiation leakage (*)
  BT Electromagnetic radiation hazards (*
     Hazards (DENT)
     Radiation hazards (DENT)
  RT Ionizing radiation (DNT)
Zinc industry (T)
  BT Industries (DNT)
     Metal industry (ET)
Zoning  (T)
  NT Land use zoning (T)
Zooplankton (DENT)
  BT Plankton (DENT)
  RT Phytoplankton (DET)
                                                                                            71

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                                  Chemical   Terms
Abate (*)
  BT Insecticides (DENT)
  RT Aromatic compounds (DNT)
     Phosphorothioates (D)
     Phosphorothioic acid/thio-diphenylene-
       bis(O-O-(dimethyl-ester)-thio)  (*)
     Phosphorus organic compounds (T)
     Sulfur organic compounds (T)
Acetic acid (DNT)
Acetic acid/(butoxyethyl-ester)-dichloro-
 phenoxy (*)
  BT Chlorine aromatic compounds (T)
     Chlorine organic compounds (T)
  RT DBE 2-4 herbicide (*)
     Herbicides (DET)
Acetic acid/(chloro-methyl)phenoxy  (*)
  BT Acetic acid (DNT)
     Acetic acids (*)
     Chlorine organic compounds (T)
  RT Herbicides (DET)
     MCPA herbicide (*)
Acetic acid/dichlorophenoxy (*)
  BT Acetic acid (DNT)
     Acetic acids (*)
     Chlorine aromatic compounds (T)
     Chlorine organic compounds (T)
  RT D 2-4 herbicide (*)
     Herbicides (DET)
Acetic acid/nitrilo-tri  (*)
  UF Nitrilotri-acetic acid
  BT Acetic acid (DNT)
     Acetic acids (*)
     Amino acids (DENT)
     Carboxylic acids (DENT)
  RT NTA (E)
Acetic acid/trichlorophenoxy (*)
  BT Acetic acid (DNT)
     Acetic acids (*)
     Chlorine aromatic compounds (T)
     Chlorine organic compounds (T)
  RT T 2-4-5  herbicide (*)
     Herbicides (DET)
Acetic acids  (*)
  BT Carboxylic acids (DENT)
     Organic  acids (DET)
Acetone (ENT)
  UF Dimethyl ketone
     Propanone
  BT Ketones  (DENT)
Acetones  (D)
  BT Ketones  (DENT)
Acetylene (DENT)
  BT Alkyne compounds (T)
     Alkyne hydrocarbons (T)
     Alkynes (DEN)
Acraldehyde - USE:
     Acroleins (DT)
Acrolein (E)
  RT Acroleins (DT)
Acroleins  (DT)
  UF Acraldelyde
    Acrylaldehyde
  BT Acyclic aldehydes (T)
    Aldehydes (DENT)
  RT Acrolein (E)
Acrylaldehyde - USE:
    Acroleins (DT)
Acrylamide (E)
  BT Amides (DENT)
  RT Acrylamide copolymers (T)
    Polyacrylamides (DT)
Acrylates  (DENT)
  BT Aliphatic acid esters (T)
    Carboxylic acid esters (ET)
    Esters  (DENT)
  RT Acrylic acid esters (E)
Acrylonitrile (E)
  RT Acrylonitriles (NT)
Acrylonitriles (NT)
  UF Vinyl  cyanide
  BT Nitriles (DENT)
  RT Acrylonitrile (E)
Adipic acid (ET)
  BT Carboxylic acids (DENT)
Alcohols (DENT)
  NT Methanol (E)
    Methanols (*)
    Methyl alcohol (T)
    Methyl alcohols (N)
Aldehydes (DENT)
  NT Acroleins (DT)
    Formaldehyde (DENT)
  RT Oxidizers (DNT)
    Photochemical oxidants (E)
Aldicarb (*)
  BT Pesticides (DENT)
  RT Ketones (DENT)
    Propanal/methyl-(methylthio) (*)
    Sulfur  organic compounds (T)
Aldrin (ET)
  BT Insecticides (DENT)
  RT Chlorine aromatic compounds (T)
    Chlorine organic compounds (T)
    Dimethanonaphthalenes (*)
Aliphatic acid esters (T)
  BT Carboxylic acid  esters (ET)
    Esters  (DENT)
  NT Acrylates (DENT)
    Acrylic acid esters (E)
  RT Fatty  acid esters  (D)
Aliphatic acids (DT)
  BT Organic acids (DET)
  RT Carboxylic acids  (DENT)
Aliphatic compounds (DNT)
  BT Organic compounds (DENT)
  NT Chlorinated  aliphatic hydrocarbons (E)
                                                                                                73

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     Chlorine aliphatic compounds (T)
     Fluorinated aliphatic hydrocarbons (E)
     Fluorine aliphatic compounds (T)
     Halogenated aliphatic hydrocarbons (E)
     lodinated aliphatic hydrocarbons (E)
     Iodine aliphatic compounds (T)
Aliphatic  hydrocarbons (T)
  BT Aliphatic compounds (DNT)
     Hydrocarbons  (DENT)
  NT Aliphatic polycyclic hydrocarbons (T)
     Brominated aliphatic hydrocarbons (E)
     Chlorinated aliphatic hydrocarbons (E)
     Fluorinated aliphatic hydrocarbons (E)
     Halogenated aliphatic hydrocarbons (E)
     lodinated aliphatic hydrocarbons (E)
     Methane (DENT)
  DEF Hydrocarbons with no benzene rings.
Aliphatic  polycyclic hydrocarbons (T)
  BT Aliphatic hydrocarbons (T)
     Hydrocarbons  (DENT)
  RT Aromatic polycyclic hydrocarbons (DT)
Aliphatic  polyene  hydrocarbons (T)
  BT Alkene compounds (T)
     Alkene hydrocarbons (T)
     Alkenes (DEN)
  NT Butadiene (EN)
     Butadienes (DT)
Alkanes (DENT)
  UF Paraffins
  BT Aliphatic hydrocarbons (T)
     Hydrocarbons  (DENT)
  NT Bromoalkanes (T)
     Chloroalkanes (T)
     Cycloalkane hydrocarbons (T)
     Cycloalkanes (DE)
     Fluoroalkanes  (T)
     Haloalkanes (T)
     lodoalkanes (T)
     Methane (DENT)
Alkene  compounds (T)
  UF Olefins
  NT Aliphatic polyene hydrocarbons (T)
     Alkene hydrocarbons (T)
     Butadiene (EN)
     Butadienes (DT)
     Cycloalkene hydrocarbons (T)
     Cycloalkenes (DE)
     Cyclohexene (T)
     Cyclohexenes (D)
     Cyclohexene dicarboximide/N-((trichloro-
       methyl)thio) (*)
     Ethylene (DENT)
     Ethylenes (D)
     Ethylene/trichloro (*)
     Propylene (NT)
     Tetrachloroethylene (T)
  RT Alkenes (DEN)
     Captan (*)
     Unsaturated organic compounds (T)
Alkene hydrocarbons (T)
  UF Olefins
  BT Alkene compounds  (T)
     Hydrocarbons (DENT)
  NT Aliphatic polyene hydrocarbons (T)
     Cycloalkene hydrocarbons (T)
     Cyclohexene  (T)
     Cyclohexenes (D)
     Ethylene (DENT)
     Ethylenes (D)
     Propylene (NT)
  RT Alkenes  (DEN)
     Unsaturated hydrocarbons (DT)
Alkenes (DEN)
  UF Olefins
  NT See under Alkene  compounds
  RT Alkene compounds  (T)
     Alkene hydrocarbons (T)
Alkyne compounds (T)
  NT Acetylene (DENT)
     Alkyne hydrocarbons (T)
     Cycloalkyne hydrocarbons (T)
  RT Alkynes  (DEN)
     Unsaturated organic compounds (T)
Alkyne hydrocarbons (T)
  BT Aliphatic hydrocarbons (T)
     Alkyne compounds (T)
     Alkynes (DEN)
     Hydrocarbons (DENT)
     Unsaturated hydrocarbons (DT)
  NT Acetylene (DENT)
     Cycloalkyne hydrocarbons (T)
Alkynes (DEN)
  NT Acetylene (DENT)
Aluminum (DENT)
  BT Metals (DENT)
  RT Aluminum isotopes (ENT)
Amiben (*)
  BT Herbicides (DET)
  RT Amines (DENT)
     Aromatic compounds (DNT)
     Benzoic acid  (NE) '
     Benzoic acids (DT)
     Benzoic acid/amino-dichloro (*)
     Carboxylic acids (DENT)
     Chlorine  aromatic compounds (T)
     Chlorine  organic compounds (T)
     Organic  acids (DET)
Amides (DENT)
  NT Acrylamide (E)
     Uracil/bromo-butyl-methyl (*)
  RT Bromacil (*)
Amine salts  (T)
Amines (DENT)
  NT Amiben (*)
     Amidines (ET)
     Aniline (EN)
74

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     Anilines (DT)
     Atrazine (*)
     Benzidines (*)
     Benzoic acid/amino-dichloro (*)
     Butylamines (*)
     Chloramines (E)
     Diamlnes  (NT)
     Heterocyclic amines (T)
     Nitramines (DT)
     Phenylamines (D)
     Primary amines (T)
     Secondary amines (T)
     Tertiary amines (T)
     Toluidines (DET)
     Triazine/chloro-ethylamino-isopropylamino (*)
Aminobenzene - USE:
     Anilines (DT)
Ammonia (DENT)
  BT Nitrogen  hydrides (EN)
     Nitrogen inorganic compounds (T)
  RT Ammonium compounds (DENT)
     Liquid ammonia  (DNT)
Anhydrides (ENT)
  NT Maleic anhydride (ET)
Aniline (EN)
  UF Aminobenzene
     Phenylamine
  BT Amines (DENT)
     Anilines (DT)
     Phenylamines (D)
Anilines (DT)
  BT Amines (DENT)
     Aromatic compounds (DNT)
     Aromatics (E)
     Arylamines (T)
  NT Sulfanilic acid (ET)
     Toluidines (DET)
  RT Phenylamines (D)
Anthracene (ENT)
  BT Anthracene compounds (T)
     Aromatic  polycyclic hydrocarbons (DT)
     Hydrocarbons (DENT)
     Polycyclic  aromatic hydrocarbons (E)
  RT Benzanthracene (E)
     Benzanthracenes (T)
Anthracene compounds (T)
  NT Anthracene (ENT)
     Benzanthracenes (T)
  RT Acridines (DET)
     Aromatic  polycyclic hydrocarbons (DT)
     Polycyclic  aromatic hydrocarbons (E)
Anthracenes (D)
  BT Aromatic  polycyclic hydrocarbons (DT)
     Hydrocarbons (DENT)
     Polycyclic  aromatic hydrocarbons (E)
Antimony (DENT)
  BT Metals (DENT)
  RT Antimony isotopes (ENT)
Argon (DENT)
  BT Rare gases (DENT)
  RT Argon isotopes (ENT)
    Argon 21  (*)
    Argon 37 (E)
Aromatic compounds (DNT)
  NT  Anilines (DT)
    Aromatic hydrocarbons (DT)
    Benzene/nitro-pentachloro (*)
    Benzoic acid/amino-dichloro (*)
    Biphenyls  (*)
    Bromine aromatic compounds (T)
    Chlorinated aromatic hydrocarbons (E)
    Chlorine aromatic compounds (T)
    Chloroaromatics (N)
    DDT (DET)
    Dichlorodiphenyltrichloroethane (N)
    Dinitrophenol (E)
    Diphenyl compounds (N)
    DNT (D)
    Ethane/bis(chlorophenyl)-dichloro (*)
    Ethane/bis(methoxyphenyl)-trichloro  (*)
    Ethylene/bis(chlorophenyl)-dichloro (*)
    Fluorinated aromatic hydrocarbons (E)
    Fluorine aromatic compounds (T)
    Halogenated aromatic hydrocarbons (E)
    Hydroquinone (T)
    lodinated  aromatic hydrocarbons (E),
    Iodine aromatic compounds (T)
    Naphthalene (ENT)
    Naphthalenes (D)
    Nitrophenols (DT)
    Phenol/chloro (*)
    Phenylamines (D)
    Phosphorothioic acid/thio-diphenylene-
       bis(O-O-(dimethyl-ester)-thio) (*)
    Toluidines (DET)
    Xylenes (DET)
  RT Abate (*)
    Amiben (*)
    Aromatics (E)
    Ciodrin (*)
    ODD insecticide (*)
    DDE insecticide (*)
    Endrin (NT)
    Methoxychlor (*)
    PCNB fungicide (*)
Aromatic hydrocarbons (DT)
  BT Aromatic compounds (DNT)
    Hydrocarbons (DENT)
  NT  Benzene  (DENT)
    Chlorinated aromatic hydrocarbons  (E)
    Fluorinated aromatic hydrocarbons  (E)
    Halogenated aromatic hydrocarbons (E)
    Indene (EN)
    lodinated aromatic  hydrocarbons (E)
    Nitrobenzene (E)
    Nitrobenzenes (DNT)
                                                                                                 75

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     Nitrophenol (E)
     Nitrophenols (DT)
     TNT (DE)
     Trinitrotoluene (NT)
  RT Aromatics (E)
Aromatic polycyclic hydrocarbons (DT)
  UF PAH
     PNAs
     Polynuclear aromatic hydrocarbons
  BT Aromatic hydrocarbons (DT)
     Aromatics (E)
     Hydrocarbons (DENT)
  NT Anthracene (ENT)
     Anthracenes (D)
     Benzanthracene (E)
     Benzanthracenes (T)
     Benzopyrene (E)
     Benzopyrenes (*)
     Indene (EN)
     Indenes (*)
     Naphthalene (ENT)
     Naphthalenes (D)
     Phenanthrene (ENT)
     Phenanthrenes (D)
     Pyrenes (NT)
  RT Aliphatic polycyclic  hydrocarbons (T)
     Polycyclic aromatic hydrocarbons (E)
  DEF Hydrocarbons containing two or more
     fused rings, at  least one of which is aromatic.
Aromatics (E)
  NT See under  Aromatic compounds
  RT Aromatic compounds (DNT)
     Aromatic hydrocarbons (DT)
Arsenic (DENT)
Arsenic compounds (DEN)
  NT Arsenic inorganic compounds (T)
     Arsenic organic compounds (T)
     Organic arsenic compounds (E)
Arsenic inorganic compounds (T)
  BT Arsenic compounds (DEN)
  NT Arsenates  (DENT)
     Arsenides (DENT)
Arsenic organic acids (T)
  BT Arsenic organic compounds (T)
     Organic acids (DET)
  NT Arsonic acid (D)
     Arsenic acids (E)
     Methane arsonic acids (*)
  RT DSMA herbicide (*)
     MSMA herbicide (*)
Arsenic organic compounds (T)
  BT Arsenic compounds (DEN)
  NT Arsenic organic acids (T)
     Arsine (T)
     Arsines (DT)
     Arsonic acid (D)
     Arsonic acids (E)
     Methane arsonic acids (*)
  RT DSMA herbicide (*)
    MSMA herbicide (*)
    Organic arsenic compounds (E)
Asbestos (DENT)
  UF Crocidolite
  BT Silicate minerals (T)
  RT Refractories (ENT)
Asphalt (DN)
  BT Bitumens (DENT)
    Organic compounds (DENT)
Asphalts (ET)
  BT Bitumens (DENT)
    Organic compounds (DENT)
  NT Asphaltenes (E)
    Natural asphalts (T)
  RT Natural bitumes (T)
    Tar (DE)
    Tars (NT)
Atrazine (*)
  BT Herbicide (DET)
  RT Amines (DENT)
    Chlorine organic compounds (T)
    Nitrogen heterocyclic compounds (DT)
    Triazines (*)
    Trjazine/chloro-ethylamino-isopropylamino (*)
Baygon insecticide (*)
  BT Insecticides (DENT)
  RT Carbamates (DET)
    Carbamic acid/(isopropoxyphenyl-ester)-methyl (*)
Benzanthracene (E)
  BT Aromatic polycyclic hydrocarbons (DT)
    Hydrocarbons (DENT)
    Polycyclic aromatic hydrocarbons (E)
Benzanthracenes (T)
  BT Anthracene  compounds (T)
    Aromatic polycyclic hydrocarbons  (DT)
    Hydrocarbons (DENT)
    Polycyclic aromatic hydrocarbons (E)
Benzene (DENT)
  BT Aromatic hydrocarbons (DT)
    Aromatics (E)
Benzene/chloro-nitro (*)
  UF Nitrochlorobenzene
  BT Chlorine aromatic compounds (T)
    Chlorine organic compounds (T)
    Nitro compounds (ENT)
    Nitrobenzene (E)
    Nitrobenzenes (DNT)
  RT Chlorobenzene (D)
    Chlorobenzenes (NT)
Benzene/dinitro -  USE:
    DNT (D)
Benzene/hexachloro (*)
  BT Chlorine aromatic compounds (T)
    Chlorine organic compounds (T)
    Chlorobenzenes (DENT)
Benzene/nitro-pentachloro (*)
  BT Aromatic compounds (DNT)
 76

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     Chlorine aromatic compounds (T)
     Chlorine organic compounds  (T)
     Nitro compounds (ENT)
     Nitrobenzene (E)
     Nitrobenzenes (DNT)
     Nitrogen organic compounds (T)
  RT Fungicides (DENT)
     PCNB fungicide (*)
Benzene/nitro - USE:
     Nitrobenzene (E)
     or
     Nitrobenzenes (DNT)
Benzidines (*)
  BT Amines (DENT)
  NT Benzidine (E)
Benzole acid/amino-dichloro (*)
  BT Amines (DENT)
     Aromatic compounds (DNT)
     Benzoic acid (EN)
     Benzoic acids (DT)
     Carboxylic acids (DENT)
     Chlorine aromatic compounds (T)
     Chlorine organic compounds  (T)
     Organic acids (DET)
  RT Abate (*)
     Herbicides (DET)
Benzopyrene  (E)
  BT Aromatic polycyclic hydrocarbons (DT)
     Polycyclic aromatic hydrocarbons (E)
     Pyrenes (NT)
  RT Benzopyrenes (*)
Benzopyrenes (*)
  BT Aromatic polycyclic hydrocarbons (DT)
     Polycyclic aromatic hydrocarbons (E)
     Pyrenes (NT)
  RT Benzopyrene (E)
Benzothiazole thiol (*)
  UF Mercaptobenzothiazole
  BT Benzothiazoles  (ET)
     Sulfur organic compounds (T)
Benzothiazoles (ET)
  BT Organic sulfur compounds (DEN)
     Sulfur organic compounds (T)
Beryllium (DNT)
  BT Alkaline earth metals (DENT)
     Metals (DENT)
     Trace elements (DENT)
  RT Beryllium isotopes (ENT)
Biphenyl/bromo (*)
  BT Biphenyls (*)
     Bromine organic compounds (T)
     Diphenyl compounds (N)
    Organic bromine compounds (E)
  RT Biphenyl (T)
     Polybrominated  biphenyls (*)
Biphenyl/chloro (*)
  BT Biphenyls (*)
     Chlorine organic compounds (T)
    Diphenyl compounds (N)
    Organic chlorine compounds (E)
  RT Biphenyl (T)
    Polychlorinated biphenyls (*)
Biphenyls (*)
  BT Aromatic compounds (DNT)
    Aromatics (E)
  NT Biphenyl (DT)
  RT Diphenyl compounds (N)
Bipyridinium/dimethyl (*)
  BT Nitrogen heterocyclic compounds (DT)
    Pyridinium compounds (E)
    Quaternary ammonium salts (T)
  RT Herbicides (DET)
    Paraquat herbicide (*)
Bitumens  (DENT)
  BT Organic compounds (DENT)
  NT Natural bitumens (T)
  RT Asphalts (ET)
    Tar (DE)
    Tars (NT)
Borate/tetrafluro - USE:
    Fluoborates (D)
Berates (DENT)
  NT Borax (ET)
    Fluoborates (D)
Borax (ET)
  BT Borate minerals (T)
    Berates (DENT)
    Boron inorganic compounds (T)
Boric acid (DE)
Boric acids (NT)
  BT Boron inorganic compounds (T)
    Inorganic acids (DET)
Boron compounds (DEN)
  NT Boron inorganic compounds (T)
    Boron organic compounds (T)
    Organic boron compounds (EN)
Boron inorganic compounds (T)
  NT Borates (DENT)
    Borax (ET)
    Boric  acid (DE)
    Boric  acids (NT)
    Boron oxides  (DENT)
    Borates (DENT)
    Fluoborates (D)
Boron organic compounds (T)
  BT Boron compounds (DEN)
  NT Carborane (N)
    Carboranes (DT)
  RT Organic boron compounds (EN)
Boron oxides (DENT)
  UF Boric anhydride
    Boric  oxides
  BT Boron inorganic compounds  (T)
Bromacil (*)
  UF Isocil
  BT Herbicides (DET)
                                                                                              77

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  RT Amides (DENT)
    Bromine organic compounds (T)
    Nitrogen heterocyclic compounds (DT)
    Uracils (DET)
    Uracil/bromo-butyl-methyl (*)
Bromides (DENT)
  BT Halides (DENT)
Brominated alicyclic hydrocarbons (E)
  BT Bromine compounds (DEN)
    Bromine organic compounds (T)
    Halogen organic compounds (T)
    Halogenated alicyclic hydrocarbons (E)
    Hydrocarbons (DENT)
    Organic bromine compounds (E)
Brominated aliphatic hydrocarbons (E)
  BT Aliphatic hydrocarbons (T)
    Bromine aliphatic compounds (T)
    Bromohydrocarbons (T)
    Halogen organic compounds (T)
    Halogenated aliphatic hydrocarbons (E)
    Hydrocarbons (DENT)
Brominated aromatic hydrocarbons (E)
  BT Bromine aromatic compounds (T)
    Bromine compounds (DEN)
    Bromine organic compounds (T)
    Halogen organic compounds (T)
    Halogenated aromatic hydrocarbons (E)
    Organic bromine compounds (E)
Bromine aliphatic compounds (T)
  BT Bromine compounds (DEN)
    Bromine organic compounds (T)
    Halogen organic compounds (T)
    Organic bromine compounds (E)
  NT Brominated aliphatic hydrocarbons (E)
    Bromoalkanes (T)
  RT Bromohydrocarbons (T)
Bromine aromatic compounds (T)
  BT Aromatic compounds (DNT)
    Aromatics (E)
    Bromine compounds (DEN)
    Bromine organic compounds (T)
    Halogen organic compounds (T)
    Organic bromine compounds (E)
  NT Biphenyl/chloro (*)
    Bromine aromatic hydrocarbons (E)
Bromine compounds (DEN)
  BT Halogen compounds (DEN)
  NT Bromine inorganic compounds (T)
    Bromine organic compounds (T)
    Organic bromine compounds (E)
Bromine inorganic compounds (T)
  BT Bromine compounds (DEN)
  NT Bromates (ENT)
    Bromides (DENT)
    Dibromides (N)
    Hydrogen  bromide (T)
Bromine organic compounds (T)
  NT Biphenyl/bromo (*)
    Brominated alicyclic hydrocarbons (E)
    Brominated aliphatic hydrocarbons (E)
    Brominated aromatic compounds (T)
    Bromine aliphatic compounds (T)
    Bromine aromatic compounds (T)
    Bromoalkanes (T)
    Bromohydrocarbons (T)
    Halogen organic compounds (T)
    Methane/bromo-chloro (*)
    Phosphoric acid/((dibromo-dichloro)ethyl-
       ester)-(dimethyl-ester) (*)
    Polybrominated biphenyls (*)
    Uracil/bromo-butyl-methyl (*)
  RT Bromacil (*)
    Naled  (*)
    Organic bromine compounds (E)
Bromoalkanes (T)
  BT Alkanes (DENT)
    Brominated aliphatic hydrocarbons (E)
    Bromine aliphatic compounds (T)
    Bromohydrocarbons (T)
    Haloalkanes (T)
    Halogen organic compounds (T)
    Hydrocarbons (DENT)
Bromochloromethane - USE:
    Methane/bromo-chloro (*)
Bromohydrocarbons (T)
  BT Bromine compounds (DEN)
    Bromine organic compounds (T)
    Halogen organic compounds (T)
    Halohydrocarbons (T)
    Hydrocarbons (DENT)
    Organic bromine compounds (E)
  NT Brominated aliphatic hydrocarbons (E)
    Bromoalkanes (T)
  RT Bromine aliphatic compounds  (T)
Butadiene  (EN)
  BT Alkene compounds (T)
    Alkenes (DEN)
    Butadienes (DT)
Butadienes (DT)
  BT Alkene compounds (T)
    Alkenes (DEN)
  NT Butadiene (EN)
Butylamines (*)
  BT Amines (DENT)
Cadmium (DENT)
  BT Heavy metals (D)
    Metals (DENT)
Captan (*)
  BT Fungicides (DENT)
  RT Alkene compounds (T)
    Chlorine aliphatic compounds  (T)
    Chlorine organic compounds (T)
    Cycloalkene compounds (T)
    Cyclohexene dicarboximide/N-((trichloromethyl)
       thio) (*)
    Imides  (DENT)
78

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     Sulfur organic compounds (T)
Carbamates (DET)
  BT Carboxylic acid esters (ET)
     Esters (DENT)
  NT Carbamic acid/((dihydro-dimethyl)benzo-
       furanyl  ester)-methyl (*)
     Carbamic  acid/dithio-methyl-(sodium-salt) (*)
    Carbamic acid(isopropoxyphenyl-ester)-methyl (*)
     Carbamic acid/methyl-ester)  (*)
     Carbamic acid/methyl-(naphthyl-ester) (*)
  RT Baygon insecticide (*)
    Carbamates (Tradename) (N)
     Carbamic acid (D)
     Carbamic  acid esters (E)
     Carbaryl (*)
     Carbofuran (*)
     Carboxylic acid  esters (ET)
     Metham pesticide (*)
Carbamates (Tradename) (N)
Carbamic acid (D)
  BT Carbamic  acids (*)
     Organic acids (DET)
  RT Carbamates (DET)
Carbamic acid esters (E)
  BT Carboxylic acid esters (ET)
     Esters (DENT)
  NT See under Carbamates
  RT Carbamates (DET)
     Carbamates (Tradename) (N)
Carbamic acid/((dihydro-dimethyl)benzofuranyl-
 ester)-methyl (*)
  BT Carbamates (DET)
  RT Pesticides  (DENT)
     Carbofuran (*)
Carbamic acid/(isopropoxyphenyl-ester)-methyl (*)
  BT Carbamates (DET)
  RT Baygon insecticide (*)
     Insecticides (DENT)
Carbamic acid/(methyl-ester) (*)
  BT Carbamates (DET)
  RT Insecticides (DENT)
Carbamic acid/dithio-methyl-(sodium-salt) (*)
  BT Carbamates (DET)
     Sulfur organic compounds (T)
     Thiocarbamates  (T)
  RT Metham pesticide (*)
     Pesticides (DENT)
Carbamic acid/ethylene-bis(dithio)  (*)
  UF EBDC fungicide
  BT Carbamic  acid (D)
    Carbamic acids (*)
     Dithiocarbamic acids (*)
    Sulfur organic compounds (T)
  RT Fungicides (DENT)
Carbamic acid/methyl-(naphthyl-ester)  (*)
  BT Carbamates (DET)
    Naphthalene  compounds (T)
  RT Carbaryl (*)
     Insecticides (DENT)
Carbamic acids (*)
  BT Organic acids (DET)
  NT Carbamic acid (D)
     Carbamic acid/ethylene-bis(dithio) (*)
  RT Carbamates (DET)
Carbaryl (*)
  UF Sevin
  BT Insecticides  (DENT)
  RT Carbamates (DET)
     Carbamic acid/methyl-(naphthyl-ester) (*)
Carbofuran (*)
  BT Insecticides  (DENT)
  RT Carbamates (DET)
    Carbamic acid/((dihydro-dimethyl)-benzofuranyl-
       ester)-methyl (*)
Carbon disulfide (DNT)
  BT Organic sulfides (T)
    Organic sulfur compounds (DEN)
     Sulfur organic compounds (T)
Carbon monoxide (DENT)
  BT Carbon compounds (DENT)
     Oxides (DENT)
Carborane (N)
  BT Boron  organic compounds (T)
     Carboranes  (DT)
Carboranes (DT)
  BT Boron  organic compounds (T)
  NT Carborane (N)
Carboxylates  (N)
  BT Esters  (DENT)
  RT Carboxylic acid esters (ET)
Carboxylic  acid esters (ET)
  BT Esters  (DENT)
  NT Acrylates (DENT)
     Acrylic acid esters (E)
     Aliphatic acid esters (T)
     Carbamic acid esters (E)
     Fatty acid esters (D)
  RT Carboxylates (N)
Carboxylic  acids (DENT)
  BT Organic acids (DET)
  NT Acetic acids (*)
     Acetic  acid/nitrilo-tri (*)
     Adipic acid  (ET)
     Benzoic acid/amino-dichloro (*)
  RT Aliphatic acids  (DT)
     Amiben (*)
Cellulose nitrate (NT)
  BT Nitrates (DEN)
     Organic  nitrates (NT)
  RT Chemical explosives (E)
     Explosives (DENT)
     Nitrocellulose (DE)
Cesium (DENT)
  BT Metals (DENT)
  RT Cesium isotopes (ENT)
Cesium isotopes (ENT)
                                                                                                79

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  BT Isotopes (ENT)
     Rare earth isotopes (E)
  NT Cesium  134 (ET)
     Cesium  137 (ENT)
Chloramines (E)
  BT Amines (DENT)
     Chlorine organic compounds (T)
Chlordan  (T)
  UF Chlordane
  BT Insecticides  (DENT)
  RT Chlorine organic compounds (T)
Chlordane - USE:
     Chlordan (T)
Chlorides  (DENT)
  BT Chlorine inorganic compounds (T)
     Halides  (DENT)
Chlorinated alkyclic hydrocarbons (E)
  BT Chlorinated hydrocarbons (D)
     Chlorine organic compounds (T)
     Halogen organic compounds (T)
     Hydrocarbons  (DENT)
     Organic chlorine compounds (E)
Chlorinated aliphatic hydrocarbons (E)
  BT Aliphatic compounds (DNT)
     Aliphatic hydrocarbons (T)
     Chlorinated  hydrocarbons (D)
     Chlorine organic compounds (T)
     Halogen organic compounds (T)
     Halogenated aliphatic  hydrocarbons (E)
     Hydrocarbons  (DENT)
     Organic chlorine compounds (E)
Chlorinated aromatic hydrocarbons (E)
  BT Aromatic compounds (DNT)
     Aromatic hydrocarbons (DT)
     Aromatics (E)
     Chlorinated  hydrocarbons (D)
     Chlorine aromatic compounds (T)
     Chlorine organic compounds (T)
     Chloroaromatics (N)
     Chlorohydrocarbons (DT)
     Halogen organic compounds (T)
     Halogenated aromatic hydrocarbons (E)
     Hydrocarbons  (DENT)
     Organic chlorine compounds (E)
Chlorinated hydrocarbons (D)
  BT Chlorine organic compounds (T)
     Halogen organic compounds (T)
     Hydrocarbons  (DENT)
     Organic chlorine compounds (E)
  NT Chlorinated alicyclic hydrocarbons (E)
     Chlorinated  aliphatic hydrocarbons (E)
    Chlorinated aromatic hydrocarbons (E)
     Chloroalkanes  (T)
  RT Chlorohydrocarbons (DT)
Chlorine (DENT)
  BT Halogens (DENT)
Chlorine aliphatic  compounds (T)
  BT Aliphatic compounds (DNT)
     Chlorine organic compounds (T)
     Halogen organic compounds (T)
     Organic chlorine compounds (E)
Chlorine aromatic compounds  (T)
  BT Aromatic compounds
     Aromatics (E)
     Chlorine organic compounds (T)
     Halogen organic compounds (T)
     Organic chlorine compounds (E)
  NT Chlorinated aromatic hydrocarbons (E)
  RT Chloroaromatics (N)
Chlorine compounds (DEN)
  BT Halogen compounds (DEN)
  NT Chlorine inorganic compounds (T)
     Chlorine organic compounds (T)
     Organic chlorine compounds (E)
Chlorine inorganic compounds  (T)
  BT Chlorine compounds (DEN)
     Halogen inorganic compounds (T)
  NT Chlorides (DENT)
     Hydrochloric acid (DENT)
     Hydrogen chloride (DT)
     Hydrogen chlorides (N)
Chlorine organic compounds (T)
  BT Chlorine compounds (DEN)
     Chlorine inorganic compounds (T)
     Halogen organic compounds (T)
    Organic halogen compounds (E)
  NT Acetic  acid/(butoxyethyl-ester)-dichloro-
       phenoxy (*)
     Acetic acid(chloro-methyl)phenoxy (*)
     Acetic acid/dichlorophenoxy (*)
     Acetic acid/trichlorophenoxy (*)
     Benzene/chloro-nitro (*)
     Benzene/hexachloro  (*)
     Benzene/nitro-pentachloro (*)
     Benzoic  acid/amino-dichloro (*)
     Biphenyl/chloro (*)
     Chloramines (E)
     Chlorinated alicyclic hydrocarbons (E)
     Chlorinated aliphatic hydrocarbons (E)
    Chlorinated aromatic hydrocarbons (E)
     Chlorinated hydrocarbons (D)
     Chlorine aliphatic compounds (T)
     Chlorine aromatic compounds (T)
     Chloroalkanes (T)
     Chloroaromatics (N)
     Chlorobenzene (D)
     Chlorobenzenes (NT)
     Chloroethanes (DT)
     Chloroethylene (N)
     Chlorohydrocarbons (DT)
     Chloromethanes (DT)
     Cyclohexane/hexachloro (*)
     Cyclohexene dicarboximide/N-((trichloro-
       methyl)thio) (*)
     DDT (DET)
     Dichlorodiphenyltrichloroethane (N)
80

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     Dioxin/tetrachloro-dibenzo (*)
     Ethane/bis(chlorophenyl)-dichloro (*)
     Ethane/bis(methoxyphenyl)-trichloro  (*)
     Ethane/dichloro (*)
     Ethane/dichloro-nitro (*)
     Ethane/trichloro (*)
     Ethane/trichloro-trifluoro (*)
     Ethylene/bis(chlorophenyl)-dichloro (*)
     Ethylene/trichloro (*)
     Kepone (*)
     Mercury/chloro-methyl  (*)
     Methane/chloro-trifluoro (*)
     Methane/bromo-chloro (*)
     Methanoindene/heptachloro-tetrahydro (*)
     Phenol/chloro (*)
     Phosphoric acid/((dibromo-dichloro)ethyl-
       ester)-(dimethyl-ester) (*)
     Phosphoric acid/(dichlorovinyl-ester)-
       (dimethyl-ester) (*)
     Polychlorinated biphenyls (*)
     Polyvinyl chloride (DNT)
     PVC (E)
     Tetrachloroethylene (T)
     Triazine/chloro-ethylamino-isopropylamino (*)
     Trichloroethanes (D)
     Vinyl chloride (T)
  RT Aldrin (ET)
     Amiben (*)
     Atrazine (*)
     Captan (*)
     Chlordan (T)
     D 2-4 herbicide (*)
     DBE 2-4 herbicide (*)
     ODD insecticide (*)
     DDE insecticide (*)
     DDVP insecticide (*)
     Dieldrin  (DENT)
     Endosulfan (*)
     Endrin (NT)
     Heptachlor (T)
     Kepone (*)
     Lindane  (*)
     MCPA herbicide (*)
     Mirex (*)
     Naled (*)
     Orange herbicide (*)
     Organic  chlorine compounds (E)
     PCNB fungicide (*)
     T 2-4-5 herbicide (*)
     Toxaphene (*)
Chloroalkanes  (T)
  BT Alkanes  (DENT)
     Chlorinated hydrocarbons (D)
     Chlorine  organic compounds (T)
     Chlorohydrocarbons (DT)
     Halogen organic compounds (T)
     Hydrocarbons (DENT)
     Organic chlorine compounds (E)
Chloroaromatics (N)
  BT Aromatic compounds (DNT)
     Aromatics (E)
     Chlorine organic compounds (T)
     Halogen organic compounds (T)
     Organic chlorine compounds (E)
  NT Chlorinated aromatic hydrocarbons (E)
  RT Chlorine aromatic compounds (T)
Chlorobenzene  (D)
  BT Chlorine organic compounds (T)
Chlorobenzenes (NT)
  BT Chlorine organic compounds (T)
Chloroethanes (DT)
  BT Chlorine organic compounds (T)
Chloroethylene  (N)
  BT Chlorine organic compounds (T)
Chlorohydrocarbons (DT)
  BT Chlorine organic compounds (T)
     Halogen organic compounds (T)
     Hydrocarbons (DENT)
     Organic chlorine compounds (T)
  NT Chlorinated alicyclic hydrocarbons (E)
     Chlorinated  aliphatic hydrocarbons (E)
    Chlorinated  aromatic hydrocarbons (E)
     Chloroalkanes (T)
  RT Chlorinated hydrocarbons (D)
Chloromethanes (DT)
  UF Dichloromethane
  BT Chlorine aliphatic compounds (T)
     Chlorine organic compounds (T)
Chloromethyl mercury - USE:
     Mercury/chloro-methyl (*)
Chloronitrobenzene - USE:
     Benzene/chloro-nitro (*)
Cholinesterase inhibitors (DT)
  BT Enzyme inhibitors (DET)
  RT Organic phosphorus compounds (DEN)
  RT Phosphorus  organic compounds (T)
Chromium (DENT)
  BT Heavy  metals (D)
     Metals (DENT)
     Transition metals (DNT)
  RT Chromium isotopes (ENT)
Chromium isotopes (ENT)
Chrysotile - USE:
     Serpentine (ENT)
Ciodrin (*)
  BT Insecticides  (DENT)
  RT Aromatic compounds (DNT)
     Crotonates (T)
     Esters (DENT)
     Organic phosphates (T)
     Phosphorus organic compounds (T)
Cobalt  (DENT)
  BT Heavy  metals (D)
     Metals (DENT)
     Transition metals (DNT)
Copper (DENT)   *"
                                                                                                 81

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  BT Heavy metals (D)
    Metals (DENT)
Crocidolite -  USE:
    Asbestos (DENT)
Cyanides (DENT)
  BT Nitrogen inorganic compounds (T)
  NT Hydrogen cyanide (DT)
     Iron cyanides (NT)
     Potassium cyanides (T)
    Sodium cyanide (T)
    Sodium cyanides (*)
  RT Nitriles (DENT)
    Cyanates (DEN)
    Cyano compounds (N)
     Hydrocyanic acid  (EN)
Cyclic hydrocarbons (N)
  BT Hydrocarbons (DENT)
  NT See under Cycloalkane  hydrocarbons
       or Cycloalkene hydrocarbons
Cycloalkane  compounds (T)
  BT Alkanes (DENT)
  NT Cyclohexane/hexachloro (*)
  RT Cycloalkanes (DE)
     Lindane  (*)
Cycloalkane  hydrocarbons (T)
  BT Alkanes (DENT)
     Hydrocarbons (DENT)
Cycloalkanes (DE)
  BT Alkanes (DENT)
     Hydrocarbons (DENT)
  NT See under Cycloalkane  compounds
  RT Cycloalkane  compounds  (T)
Cycloalkene  compounds  (T)
  BT Alkene compounds (T)
     Alkenes (DEN)
  NT Cyclohexene (T)
     Cyclohexene  dicarboximide/N-((trichloro-
        methyl)thio) (*)
     Cyclohexenes (D)
  RT Captan  (*)
     Cycloalkenes (DE)
Cycloalkene  hydrocarbons (T)
  BT Alkene compounds (T)
     Alkene hydrocarbons (T)
     Alkenes (DEN)
     Hydrocarbons (DENT)
Cycloalkenes (DE)
  BT Alkene compounds (T)
    Alkenes (DEN)
  NT See under Cycloalkene  compounds
  RT Cycloalkene compounds  (T)
Cyclohexane/hexachloro (*)
  BT Chlorine aliphatic compounds (T)
    Chlorine  organic compounds (T)
    Cycloalkane compounds (T)
  RT Insecticides (DENT)
    Lindane (*)
Cyclohexanone (E)
  BT Cycloaliphatic ketones (T)
    Ketones (DENT)
Cyclohexanones (DT)
  BT Cycloaliphatic ketones (T)
    Ketones (DENT)
Cyclohexene (T)
  BT Alkene compounds (T)
    Alkene hydrocarbons (T)
    Cycloalkene compounds (T)
Cyclohexene dicarboximide/N-((trichloro-
 methyl)thio) (*)
  BT Alkene compounds (T)
    Chlorine aliphatic compounds (T)
    Chlorine organic compounds (T)
    Cycloalkene compounds (T)
    Imides (DENT)
    Sulfur organic  compounds (T)
  RT Captan (*)
    Fungicides (DENT)
  clohexenes (D)
  BT Alkene compounds (T)
    Alkene hydrocarbons (T)
    Cycloalkene compounds (T)
Cyclonite - USE:
    RDX (DNT)
Cyclotetramethylenetetranitramine - USE:
    HMX (DNT)
Cyclotrimethylenetrinitramine - USE:
    RDX (DNT)
D 2-4 herbicide (*)
  BT Herbicides (DET)
  RT Acetic acid (DNT)
    Acetic  acids (*)
    Acetic acid/dichlorophenoxy (*)
    Chlorine aromatic compounds (T)
    Chlorine organic compounds (T)
DBE 2-4 herbicide (*)
  BT Herbicides (DET)
  RT Acetic acid/(butoxyethyl-ester)-dichloro-
       penoxy  (*)
    Chlorine aromatic compounds (T)
    Chlorine organic compounds (T)
DDD insecticide (*)
  BT Insecticides (DENT)
  RT Aromatic compounds (DNT)
    Chlorine organic compounds (T)
     Ethane/bis(chloropenyl)-dichloro (*)
DDE insecticide (*)
  BT Insecticides (DENT)
  RT Aromatic compounds (DNT)
    Chlorine organic compounds (T)
     Ethylene/bis(chlorophenyl)-dichloro (*)
DDT (DET)
  BT Aromatic compounds (DNT)
     Aromatics (E)
    Chlorine organic compounds (T)
  RT Dichlorodiphenyltrichloroethane (N)
     Insecticides (DENT)
82

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DDVP insecticide (*)
  UF Dichlorvos
  BT Insecticides (DENT)
  RT Chlorine aliphatic compounds (T)
    Chlorine organic compounds (T)
    Phosphoric acid/(dichlorovinyl-ester)-
       (dimethyl-ester) (*)
    Phosphorus organic compounds (T)
Diazinon (T)
  BT Insecticides (DENT)
  RT Nitrogen heterocyclic compounds (DT)
    Phosphorothioates (D)
    Phosphorothioic acid/O-O-(diethyl-ester)-
       O-((isopropyl-methyl)-pyrimidinyl-
       ester) (*)
    Phosphorus organic compounds (T)
    Sulfur organic compounds(T)
Dichlorethane - USE:
    Ethane/dichloro (*)
Dichlorodiphenyltrichloroethane (N)
  BT Aromatic compounds (DNT)
    Aromatics (E)
    Chlorine organic compounds (T)
  RT DDT (DET)
    Insecticides (DENT)
Dichloromethane - USE:
    Chloromethanes (DT)
Dichloronitroethane  - USE:
    Ethane/dichloro-nitro (*)
Dichlorvos - USE:
     DDVP insecticide (*)
Dieldrin  (DENT)
  BT Insecticides (DENT)
  RT Chlorine organic compounds (T)
    Dimethanonaphthalenes (*)
    Naphthalene compounds (T)
Dimethanonaphthalenes (*)
  BT Aromatic compounds (DNT)
    Naphthalene compounds (T)
  RT Aldrin  (ET)
     Dieldrin (DENT)
     Endrin  (NT)
Dimethyl disulfide (*)
  BT Organic polysulfides (T)
    Sulfur organic compounds (T)
Dimethyl ketone - USE:
    Acetone (ENT)
Dimethyl mercury -  USE:
    Mercury/dimethyl (*)
Dimethylbenzene  - USE:
    Xylenes (DET)
Dinitrobenzene - USE:
    DNT (D)
Dinitrophenol (E)
  UF DNP
  BT Aromatic compounds (DNT)
    Aromatics (E)
    Nitro compounds (ENT)
     Nitrophenols (DT)
     Phenols (DENT)
  RT Nitrophenol (E)
Dioxin/tetrachloro-dibenzo (*)
  BT Chlorine organic compounds (T)
     Oxygen heterocyclic compounds (T)
  RT Herbicides (DET)
Diphenyl compounds  (N)
  BT Aromatic compounds (DNT)
     Aromatics (E)
  RT Biphenyl (DT)
     Biphenyls (*)
Disulfide/bis(dimethyl-thiocarbamoyl) (*)
  BT Organic polysulfides (T)
     Sulfur organic compounds (T)
  RT Pesticides (DENT)
Disulfide/dimethyl (*)
  BT Organic polysulfides (T)
     Sulfur organic compounds (T)
Dithiocarbamic acids  (*)
  BT Carbamic acids (*)
     Sulfur organic compounds (T)
  NT Carbamic acid/ethylene-bis(dithio) (*)
DMDT insecticide - USE:
     Methoxychlor (*)
DNP - USE:
     Dinitrophenol (E)
DNT (D)
  UF Benzene/dinitro
     Dinitrobenzene
  BT Aromatic compounds (DNT)
     Aromatics (E)
     Nitro compounds (ENT)
  RT Toluene (ENT)
     Toluenes (D)
DSMA herbicide (*)
  BT Herbicides (DET)
  RT Arsenic organic acids (T)
     Arsenic  organic compounds (T)
     Methane arsenic acids (*)
     Organic acids (DET)
EBDC fungicide - USE:
     Carbamic acid/ethylene-bis(dithio) (*)
Endosulfan  (*)
  BT Insecticides (DENT)
  RT Chlorine aliphatic compounds (T)
     Chlorine organic compounds  (T)
     Norbornenes (*)
     Sulfur organic compounds  (T)
Endrin  (NT)
  BT Insecticides (DENT)
  RT Aromatic compounds (DNT)
     Chlorine organic compounds (T)
     Dimethanonaphthalenes (*)
Esters (DENT)
  NT Acrylates  (DENT)
     Aliphatic acid esters (T)
     Carbamates (DET)
                                                                                                83

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    Carbamates (Tradename) (N)
    Carbamic acid esters (E)
    Carboxylates (N)
    Carboxylic acid esters (ET)
    Fatty acid esters (D)
    Peroxy esters (T)
    Phosphinic acid esters (E)
    Phosphonic acid  esters (E)
    Phthalates (DENT)
    Sulfur organic acid esters (T)
    Thiocarbamates (T)
    Thiophosphoric acid esters (E)
  RT Ciodrin (*)
Ethane/bis(chlorophenyl)-dichloro (*)
  BT Aromatic compounds (DNT)
    Chlorine  organic compounds (T)
  RT ODD insecticide  (*)
    Insecticides (DENT)
Ethane/bis(chlorophenyl)-trichloro - USE:
    DDT (DET)
    or
    Dichlorodiphenyltrichloroethane (N)
Ethane/bis(methoxyphenyl)-trichloro (*)
  BT Aromatic compounds (DNT)
    Aromatics (E)
    Chlorine  aliphatic compounds (T)
    Chlorine  organic compounds (T)
  RT Insecticides  (DENT)
    Methoxychlor (*)
Ethane/dichloro (*)
  UF Dichloroethane
  BT Chlorine organic compounds (T)
    Chloroethanes (DT)
Ethane/dichloro-nitro (*)
  BT Chlorine organic compounds (T)
    Nitro compounds (ENT)
Ethane/trichloro (*)
  UF Trichloroethane
  BT Chlorine organic compounds (T)
    Chloroethanes (DT)
    Trichloroethanes  (D)
Ethane/trichloro-trifluro  (*)
  BT Chlorine organic compounds (T)
    Chloroethanes (DT)
    Fluorine organic  compounds (NT)
Ethylene  (DENT)
  BT Alkene compounds (T)
    Alkene hydrocarbons (T)
    Alkenes (DEN)
Ethylene glycol/dinitrate (*)
  BT Organic nitrates (NT)
Ethylene/bis(chlorophenyl)-dichloro (*)
  BT Aromatic compounds (DNT)
    Chlorine  organic compounds (T)
  RT DDE  Insecticide (*)
    Insecticides (DENT)
Ethylene/trichloro (*)
  UF Trichloroethylene
  BT Alkene compounds (T)
    Chlorine organic compounds (T)
Ethylenebisdithiocarbamate - USE:
    Dithiocarbamic acid/ethylene-bis (*)
Ethylenes (D)
  BT Alkene compounds (T)
    Alkene hydrocarbons (T)
    Alkenes (DEN)
Fatty  acid esters (D)
  BT Carboxylates (N)
    Carboxylic acid esters (ET)
    Esters (DENT)
  RT Aliphatic  acid esters (T)
Fluoborates (D)
  UF Borate/tetrafluoro (*)
  BT Borates (DENT)
    Boron inorganic compounds (T)
    Fluorides (DENT)
    Fluorine inorganic compounds (T)
Fluorides (DENT)
  BT Fluorine inorganic compounds (T)
    Halides (DENT)
Fluorinated  alicyclic hydrocarbons (E)
  BT Fluorine organic compounds (NT)
    Halogen organic compounds (T)
    Halogenated alicyclic hydrocarbons (E)
    Hydrocarbons  (DENT)
    Organic fluorine compounds (E)
Fluorinated  aliphatic  hydrocarbons (E)
  BT Aliphatic  compounds (DNT)
    Aliphatic hydrocarbons (T)
    Fluorinated hydrocarbons (D)
    Fluorine organic compounds (NT)
    Fluorohydrocarbons  (T)
    Halogen organic compounds (T)
    Hydrocarbons  (DENT)
    Organic fluorine compounds (E)
Fluorinated  aromatic  hydrocarbons (E)
  BT Aromatic  compounds (DNT)
    Aromatic hydrocarbons (DT)
    Aromatics (E)
    Fluorinated hydrocarbons (D)
    Fluorine organic compounds (NT)
    Fluorohydrocarbons  (T)
    Halogen organic compounds (T)
    Hydrocarbons  (DENT)
    Organic fluorine compounds (E)
Fluorinated hydrocarbons (D)
  BT Fluorine organic compounds (NT)
    Halogen organic compounds (T)
    Hydrocarbons  (DENT)
    Organic fluorine compounds (E)
  NT  Fluorinated aliphatic  hydrocarbons (E)
    Fluorinated aromatic hydrocarbons (E)
  RT Fluorohydrocarbons (T)
Fluorine aliphatic  compounds  (T)
  BT Aliphatic  compounds (DNT)
    Fluorine organic compounds (NT)
84

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     Halogen organic compounds (T)
     Organic fluorine compounds (E)
 Fluorine aromatic compounds (T)
  BT Aromatic compounds (DNT)
     Aromatics (E)
     Fluorine organic compounds (NT)
     Halogen organic compounds (T)
     Organic fluorine compounds (E)
 Fluorine compounds (DEN)
  BT Halogen compounds (DEN)
  NT Fluorine inorganic compounds (T)
     Fluorine organic compounds (NT)
     Organic fluorine compounds (E)
 Fluorine inorganic compounds (T)
  BT Fluorine compounds (DEN)
     Halogen inorganic compounds (T)
  NT Fluoborates (D)
     Fluorides (DENT)
     Hydrogen fluoride (DT)
     Sulfur fluorides (ENT)
     Sulfur hexafluoride  (T)
 Fluorine organic compounds (NT)
  BT Fluorine compounds (DEN)
     Halogen organic compounds (T)
     Organic halogen compounds (E)
  NT Ethane/trichloro-trifluro (*)
     Fluorinated alicyclic hydrocarbons (E)
     Fluorinated aliphatic hydrocarbons (E)
     Fluorinated aromatic hydrocarbons (E)
     Fluorinated hydrocarbons (D)
     Fluorine aliphatic compounds (T)
     Fluorine aromatic compounds (T)
     Fluoro compounds (EN)
     Fluoroalkanes (T)
     Fluorocarbons (N)
     Fluorohydrocrbons (NT)
     Freon (N)
     Freorts (E)
     Methane/bis(dinitro-fluoroethyoxy) (*)
     Methane/chloro-trifluoro (*)
     Pentane/perfluoro (*)
  RT Organic fluorine compounds (E)
 Fluoro compounds (EN)
  BT Fluorine organic compounds (NT)
     Halogen organic compounds (T)
     Organic fluorine compounds (E)
Fluoroalkanes (T)
  BT Alkanes (DENT)
     Fluorine organic  compounds  (NT)
     Hydrocarbons (DENT)
     Organic fluorine compounds (E)
Fluorocarbons (N)
  BT Fluorine organic compounds (NT)
     Halogen organic compounds  (T)
     Organic fluorine compounds  (E)
Fluorohydrocarbons  (NT)
  BT Fluorine organic compounds (NT)
     Halogen organic  compounds  (T)
     Hydrocarbons (DENT)
     Organic fluorine compounds (E)
     Fluorinated aliphatic hydrocarbons (E)
  NT Fluorinated aromatic hydrocarbons (E)
  RT Fluorinated hydrocarbons (D)
Fluoropolymers (D)
  BT Halocarbon plastics (D)
     Halocarbon resins (T)
  RT Fluorinated polymers (*)
Formaldehyde  (DENT)
  UF Formalin
     Formic aldehyde
     Formal
     Oxymethylene
  BT Aldehydes  (DENT)
Formalin - USE:
     Formaldehyde (DENT)
Freon (N)
  BT Fluorine organic compounds (NT)
  RT Freons  (E)
Freons (E)
  BT Fluorinated aliphatic hydrocarbons (E)
     Fluorinated hydrocarbons (D)
     Fluorine organic compounds (NT)
     Fluoroalkanes (T)
     Fluorohydrocarbons (NT)
    Halogen organic compounds (T)
  RT Freon (N)
Fuels (DENT)
  NT Aerozine (DNT)
     Aircraft fuels (EN)
     Alloy nuclear fuels (ET)
     Anthracite (ET)
     Attic oil (T)
    Automobile fuels (EN)
     Automotive fuels (DET)
     Aviation fuels (DET)
     Aviation gasoline (DT)
     Bituminous  coal (ET)
     Black coal (E)
     Blast furnace gas (T)
     Boiler fuel (E)
     Brown coal (E)
     Bunker oils (T)
     Cannel  coal (ET)
    Carburetted water gas (E)
     Cellar oil (T)
     Charcoal (DENT)
     Chemical fuels (N)
    Coal (DENT)
     Coal gas (DET)
     Coal  liquids (E)
     Coal tar oils (E)
     Coke  (ENT)
     Coke  oven gas (E)
     Crude oil (DENT)
     Diesel fuels (DENT)
     Dispersion nuclear fuels (ET)
                                                                                                85

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    Fossil fuels (DENT)
    Fuel cell fuels (T)
    Fuel gas (E)
    Fuel oil (DT)
    Fuel oils (EN)
    Fuel slurries (E)
    Gas fuels (EN)
    Gas oils (E)
    Gasoline (DENT)
    Heating fuels (T)
    Heavy oils (ET)
    High btu gas (E)
    High energy  fuels (N)
    High sulfur coal (*)
    High sulfur fuels  (*)
    Hydrocarbon fuels (N)
    Hydrogen (DENT)
    Hydrogen fuels (EN)
    Intermediate  btu  gas (E)
    Jet engine fuels (DENT)
    Kerosene (DENT)
    Lignite  (ET)
    Liquid metal  fuels (E)
    Liquefied natural  gas (DENT)
    Liquefied petroleum  gases (T)
    Liquid fuels (ET)
    Low btu gas  (E)
    Low sulfur coal (*)
    Low sulfur fuels (*)
    Manufactured gas (T)
    Metal fuels (N)
    Metallurgical  fuels (T)
    Methane (DENT)
    Methanol (E)
    Methyl alcohol (T)
    Methyl alcohols (N)
    Mixed base crudes (T)
    Molten salt fuels  (ET)
    Motor fuels (T)
    Naphthalene base crudes (T)
    Natural gas (DENT)
    Natural gas  liquids (ET)
    Natural uranium  fuels  (T)
    Nuclear fuels (ENT)
    Oils (DENT)
    Paraffin base crudes (T)
    Peat (ET)
    Petroleum (ET)
    Producer gas (E)
    Pulverized fuels (T)
    Reactor fuels (DT)
    Residual oils  (T)
    Semibituminous coal  (T)
    Semicoke  (E)
    Shale oil (ENT)
    Shale tar oil  (E)
    Slurried jet engine fuels (T)
    Slurry fuels (D)
     Solid fuels (DE)
     Solid jet engine fuels (DT)
     Solvent-refined coal  (E)
     Sour crudes (ET)
     Sour gas (T)
     Subbituminous coal (ET)
     Sweet crudes (T)
     Sweet gas (T)
     Synthane (N)
     Synthesis gas (E)
     Synthetic fuels (DEN)
     Synthetic petroleum (E)
     Thermonuclear  fuels  (E)
     Torbanite (E)
     Town gas (E)
     Water gas (E)
     Wood (DENT)
Fungicides (DENT)
  NT Captan (*)
     PCNB fungicide (*)
  RT Benzene/nitro-pentachloro (*)
     Carbamic acid/ethylene-bis(dithio) (*)
     Cyclohexene dicarboximide/N-((trichloro-
       methyl)thio)  (*)
Furans (DET)
  BT Oxygen heterocyclic  compounds (T)
    Oxygen organic compounds (T)
Gasoline  (DENT)
  BT Fuels (DENT)
  NT Aviation gasoline (DET)
  RT Antiknock additives (NT)
     Octane number (NT)
Geon - USE:
     Polyvinyl chloride (DNT)
     or
     PVC (E)
Halides (DENT)
  BT Halogen inorganic compounds (T)
  NT Bromides (DENT)
     Chlorides (DENT)
     Fluorides (DENT)
     Iodides (DENT)
Haloalkanes (T)
  BT Alkanes (DENT)
     Halogen organic compounds (T)
     Hydrocarbons (DENT)
    Organic  halogen compounds (E)
Halocarbon plastics (D)
  BT Plastics (DENT)
Halocarbon resins (T)
  BT Plastics (DENT)
Halogen compounds  (DEN)
  NT Halogen inorganic compounds (T)
     Halogen organic compounds (T)
    Organic  halogen compounds (E)
Halogen inorganic  compounds (T)
  BT Halogen compounds (DEN)
  NT Halides (DENT)
86

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Halogen organic compounds (T)
  BT Halogen compounds (DEN)
  NT Brominated alicyclic hydrocarbons (E)
    Brominated aliphatic hydrocarbons (E)
    Brominated aromatic hydrocarbons (E)
    Bromine aliphatic compounds (T)
    Bromine aromatic compounds (T)
    Bromine compounds (DEN)
    Bromoalkanes (T)
    Bromohydrocarbons (T)
    Chlorinated  alicyclic hydrocarbons (E)
    Chlorinated aliphatic hydrocarbons (E)
    Chlorinated aromatic hydrocarbons (E)
    Chlorinated hydrocarbons (D)
    Chlorine aliphatic compounds (T)
    Chlorine aromatic compounds (T)
    Chloroalkanes (T)
    Chloroaromatics (N)
    Chlorohydrocarbons (DT)
    Fluorinated alicyclic hydrocarbons (E)
    Fluorinated aliphatic hydrocarbons (E)
    Fluorinated aromatic hydrocarbons (E)
    Fluorinated hydrocarbons (D)
    Fluorine aliphatic compounds (T)
    Fluorine aromatic compounds (T)
    Fluoro compounds (EN)
    Fluorocarbons (N)
    Fluorohydrocarbons (NT)
    Freons (E)
    Haloalkanes (T)
    Halogenated alicyclic hydrocarbons (E)
    Halogenated aliphatic  hydrocarbons (E)
    Halogenated aromatic  hydrocarbons (E)
    Halogenated hydrocarbons (D)
    Halohydrocarbons (T)
    lodinated alicyclic hydrocarbons (E)
    lodinated  aliphatic hydrocarbons  (E)
    lodinated  aromatic hydrocarbons  (E)
    Iodine aliphatic compounds (T)
    Iodine aromatic compounds (T)
    lodoalkanes (T)
    lodohydrocarbons (T)
    Organic chlorine compounds (E)
    Organic fluorine compounds (E)
    Organic iodine  compounds (E)
  RT Organic halogen compounds (E)
Halogenated alicyclic hydrocarbons  (E)
  BT Halogen organic compounds (T)
    Halogenated hydrocarbons (D)
    Halohydrocarbons (T)
    Hydrocarbons (DENT)
Halogenated aliphatic hydrocarbons (E)
  BT Aliphatic compounds (DNT)
    Aliphatic hydrocarbons (T)
    Halogen organic compounds (T)
    Halogenated hydrocarbons (D)
    Halohydrocarbons (T)
    Hydrocarbons (DENT)
Halogenated aromatic hydrocarbons (E)
  BT Aromatic compounds (DNT)
    Aromatic hydrocarbons (DT)
    Aromatics (E)
    Halogen organic compounds (T)
    Halogenated hydrocarbons (D)
    Halohydrocarbons (T)
    Hydrocarbons (DENT)
Halogenated hydrocarbons (D)
  BT Halogen organic compounds (T)
    Halogenated alicyclic hydrocarbons (E)
    Halogenated aliphatic hydrocarbons (E)
    Halogenated aromatic hydrocarbons (E)
    Hydrocarbons (DENT)
Halogens  (DENT)
  NT Chlorine (DENT)
    Iodine (DENT)
Halohydrocarbons  (T)
  BT Halogen organic compounds (T)
    Halogenated alicyclic hydrocarbons (E)
    Halogenated aliphatic hydrocarbons (E)
    Halogenated aromatic hydrocarbons (E)
    Hydrocarbons (DENT)
  RT Halogenated hydrocarbons (D)
Heavy metals (D)
  BT Metals (DENT)
  NT Cadmium (DENT)
    Chromium (DENT)
    Cobalt (DENT)
    Copper (DENT)
    Iron (DENT)
    Lead  (E)
    Lead  (Metal) (N)
    Lead(Metal) (T)
    Manganese (DENT)
    Mercury (DE)
    Mercury (Metal) (N)
    Mercury(Metal) (T)
    Molybdenum (DENT)
    Nickel (DENT)
    Titanium  (ENT)
    Uranium (DENT)
    Zinc (DENT)
    Zirconium (DENT)
  RT Trace elements (DENT)
Heptachlor (T)
  BT Insecticides (DENT)
  RT Chlorine aliphatic compounds (T)
    Chlorine organic compounds (T)
    Indene (EN)
    Indenes (*)
    Methanoindenes (*)
    Methanoindene/heptachloro-tetrahydro (*)
Herbicides (DET)
  NT Amiben (*)
    Aminotriazole (*)
    Atrazine (*)
     Bromacil (*)
                                                                                              87

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     D 2-4 herbicide (*)
     DBE 2-4 herbicide (*)
     DSMA herbicide (*)
     MCPA herbicide (*)
     MSMA herbicide (*)
     Orange herbicide (*)
     Paraquat herbicide (*)
     T 2-4-5 herbicide (*)
  RT Acetic acid/(butoxyethyl-ester)-dichloro-
       phenoxy (*)
     Acetic acid/dichlorophenoxy (*)
     Acetic acid/(chloro-methyl)phenoxy (*)
     Acetic acid/trichloro phenoxy (*)
     Benzoic acid/amino-dichloro (*)
     Bipyridinium/dimethyl (*)
     Triazine/chloro-ethylamino-isopropylarnino (*)
     Uracil/bromo-butyl-methyl (*)
Hexachlorobutadiene - USE:
     Butadiene/hexachloro (*)
HMX (DNT)
  UF Cyclotetramethylenetetranitramine
     Tetranitrotetrazacyclooctane
  BT Nitrogen heterocyclic compounds  (DT)
     Nitrogen organic compounds (T)
  RT Chemical explosives (E)
     Explosives (DENT)
Humic acids (ET)
  RT Humus (ET)
     Organic acids (DET)
Hydrazine (DE)
  BT Hydrazines (NT)
     Nitrogen organic compounds (T)
Hydrazines (NT)
  BT Nitrogen organic compounds (T)
  NT Dimethyl hydrazine(M) (D)
     Dimethylhydrazine (*)
     Dimethylhydrazines (NT)
     Hydrazine (DE)
     Hydrazine/phenyl (*)
     Hydrazine/methyl (*)
Hydrocarbons  (DENT)
  BT Organic compounds (DENT)
  NT Acetylene (DENT)
     Aliphatic hydrocarbons (T)
     Aliphatic polycyclic hydrocarbons (T)
     Alkanes (DENT)
     Alkene hydrocarbons (T)
     Alkyne hydrocarbons (T)
     Anthracene (ENT)
     Anthracenes (D)
     Aromatic  hydrocarbons (T)
     Aromatic  polycyclic hydrocarbons (DT)
     Benzanthracene (E)
     Benzanthracenes (T)
     Biphenyl (DET)
     Brominated alicyclic hydrocarbons (E)
     Brominated aliphatic hydrocarbons (E)
     Bromoalkanes (T)
     Bromohydrocarbons (T)
     Butadienes (DT)
     Chlorinated alicyclic hydrocarbons (E)
     Chlorinated aliphatic hydrocarbons (E)
     Chlorinated aromatic hydrocarbons (E)
     Chlorinated hydrocarbons (D)
     Chloroalkanes (T)
     Chlorohydrocarbons (DT)
     Cyclic hydrocarbons (N)
     Cycloalkane hydrocarbons (T)
     Cycloalkanes (DE)
     Cycloalkene hydrocarbons (T)
     Cychlohexene (T)
     Ethane/dichloro (*)
     Ethylene (DENT)
     Fluorinated alicyclic hydrocarbons (E)
     Fluorinated aliphatic hydrocarbons (E)
     Fluorinated aromatic hydrocarbons (E)
     Fluorinated hydrocarbons (D)
     Fluoroalkanes (T)
     Fluorohydrocarbons (NT)
     Gasoline (DENT)
     Haloalkanes (T)
     Halogenated aromatic hydrocarbofns (E)
     Halogenated alicyclic hydrocarbons (E)
     Halogenated aliphatic hydrocarbons (E)
     Halogenated hydrocarbons (D)
     Halohydrocarbons (T)
     Indene  (EN)
     lodinated alicyclic hydrocarbons (E)
     lodinated aliphatic hydrocarbons (E)
     lodinated aromatic hydrocarbons (E)
     lodoalkanes (T)
     lodohydrocarbons  (T)
     Methane (DENT)
     Oils (DENT)
     Petroleum (E)
     Polycyclic aromatic hydrocarbons (E)
     Polyphenyl hydrocarbons (T)
     Styrene (ET)
     Terpene hydrocarbons (T)
     Vinyl chloride (T)
Hydrochloric acid  (DENT)
  BT Chlorine inorganic compounds (T)
     Inorganic acids (DET)
  RT Hydrogen chloride (DT)
Hydrogen bromide (T)
  BT Bromides (DENT)
     Bromine inorganic compounds (T)
  RT Hydrobromic acid (ENT)
Hydrogen chloride (DT)
  BT Chlorides (DENT)
     Chlorine inorganic compounds (T)
  RT Hydrochloric acid (DENT)
     Hydrogen chlorides (N)
Hydrogen chlorides (N)
  BT Chlorides (DENT)
     Chlorine inorganic compounds (T)
88

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  RT Hydrochloric acid (DENT)
     Hydrogen chloride (DT)
Hydrogen fluoride (DT)
  BT Fluorides (DENT)
     Fluorine inorganic compounds (T)
  RT Hydrofluoric acid (DENT)
Hydrogen sulfide (DNT)
  BT Inorganic sulfides (NT)
     Sulfur inorganic compounds (T)
Hydrogen sulfides (E)
  BT Inorganic sulfides (NT)
     Sulfur inorganic compounds (T)
Hydroquinone (T)
  UF Paradihydroxy benzene
  BT Aromatic compounds (DNT)
     Phenols (DENT)
Indene (EN)
  BT Aromatic hydrocarbons (DT)
     Aromatic polycyclic hydrocarbons (DT)
     Aromatics (E)
     Hydrocarbons (DENT)
     Indenes (*)
     Polycyclic aromatic hydrocarbons (E)
Indenes (*)
  BT Aromatic hydrocarbons (DT)
     Aromatic polycyclic hydrocarbons (DT)
     Aromatics (E)
     Hydrocarbons (DENT)
     Polycyclic aromatic hydrocarbons (E)
  NT Methanoindenes (*)
     Methanoindene/heptachloro-tetrahydro  (*)
  RT Heptachlor (T)
Inorganic acids  (DET)
  NT Boric acids (NT)
     Hydrochloric acid  (DENT)
     Nitric acid (DENT)
     Sulfuric acid (DENT)
  RT Organic acids (DET)
Inorganic compounds (DENT)
Inorganic disulfides (T)
  BT Sulfides (DEN)
     Sulfur inorganic compounds (T)
Inorganic nitrates  (NT)
  BT Nitrates (DEN)
     Nitrogen inorganic compounds  (T)
  RT Organic nitrates (NT)
Inorganic phosphates (T)
  BT Phosphates (DEN)
     Phosphorus inorganic compounds (T)
  RT Phosphoric  acid esters (E)
Inorganic polysulfides (T)
  BT Sulfides (DEN)
     Sulfur inorganic compounds (T)
Inorganic sulfides  (NT)
  BT Sulfides (DEN)
     Sulfur inorganic compounds (T)
  NT Inorganic sulfides (NT)
Insecticides (DENT)
  NT Abate (*)
    Aldicarb (*)
    Aldrin (ET)
    Baygon insecticide (*)
    Carbaryl (*)
    Carbofuran (*)
    Chlordan  (T)
    Ciodrin (*)
    DDD  insecticide (*)
    DDE insecticide (*)
    DDVP  insecticide (*)
    Diazinon (T)
    Dieldrin (DENT)
    Endosulfan (*)
    Endrin (NT)
    Heptachlor (T)
    Lindane (*)
    Malathion (DET)
    Methoxychlor (*)
    Methyl parathion (*)
    Mirex (*)
    Naled (*)
    Paration (D)
    Toxaphene (*)
  RT Carbamic acid/(isopropoxyphenyl-ester)-
       methyl  (*)
    Carbamic acid/(methyl-ester) (*)
    Carbamic acid/methyl-(naphthyl-ester) (*)
    Cyclohexane/hexachloro (*)
    DDT (DET)
    Dichlorodiphenyltrichloroethane (N)
    Ethane/bis(chlorophenyl)-dichloro (*)
    Ethane/bis(methoxyphenyl)-trichloro (*)
    Ethylene/bis(chlorophenyl)-dichloro (*)
    Kepone (*)
    Methanoindene/heptachloro-tetrahydro (*)
    Phosphoric acid/((dibromo-dichloro)ethyl-
       ester)-(dimethyl-ester) (*)
    Phosphoric acid/(dichlorovinyl-ester)-
       dimethyl-ester (*)
    Phosphorothioic acid/O-O-(diethyl-ester)
       O-((isopropyl-methyl)pyrimidinyl-ester)
    Phosphorothioic acid/O-O-(diethyl-ester)
       O-(nitrophenyl-ester) (*)
    Phosphorothioic acid/O-O-(dimethyl-ester)
       O-(nitrophenyl-ester) (*)
    Phosphorothioic acid/thio-diphenylene-bis(O-
       O-(dimethyl-ester)-thio)  (*)
Iodides (DENT)
  BT Halides (DENT)
    Iodine inorganic compounds (T)
lodinated alicyclic hydrocarbons (E)
  BT Halogen organic compounds (T)
    Halogenated alicyclic hydrocarbons (E)
    Hydrocarbons (DENT)
    Iodine organic compounds (T)
    Organic iodine compounds (E)
lodinated aliphatic hydrocarbons (E)
                                                                                                  89

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  BT Aliphatic compounds (DNT)
     Aliphatic hydrocarbons (T)
    Halogen organic compounds (T)
    Halogenated aliphatic hydrocarbons (E)
     Hydrocarbons (DENT)
     Iodine aliphatic compounds (T)
     Iodine organic compounds (T)
     Organic iodine compounds (E)
lodinated aromatic hydrocarbons (E)
  BT Aromatic compounds (DNT)
     Aromatic hydrocarbons (DT)
     Aromatics (E)
    Halogen organic compounds (T)
    Halogenated aromatic hydrocarbons (E)
     Hydrocarbons (DENT)
     Iodine aromatic compounds (T)
     Iodine organic compounds (T)
     Organic iodine compounds (E)
Iodine (DENT)
  BT Halogens (DENT)
  RT Iodine 131(ENT)
     Iodine isotopes (ENT)
Iodine aliphatic compounds  (T)
  BT Aliphatic compounds (DNT)
     Halogen organic compounds (T)
     Iodine organic compounds (T)
     Organic iodine compounds (E)
  RT lodinated aliphatic hydrocarbons (E)
Iodine aromatic compounds  (T)
  BT Aromatic compounds (DNT)
     Aromatics (E)
     Halogen organic compounds (T)
     Iodine organic compounds (T)
     Organic iodine compounds (E)
  NT lodinated aromatic hydrocarbons (E)
Iodine compounds (DEN)
  BT Halogen compounds (DEN)
  NT Iodine inorganic compounds (T)
     Iodine organic compounds (T)
     Organic iodine compounds (E)
Iodine inorganic compounds (T)
  BT Halogen inorganic compounds (T)
     Iodine compounds (DEN)
  NT Iodides (DENT)
Iodine isotopes (ENT)
  NT Iodine 131 (ENT)
Iodine organic compounds (T)
  BT Halogen organic compounds (T)
     Iodine compounds (DEN)
    Organic halogen compounds (E)
  NT lodinated alicyclic hydrocarbons (E)
     lodinated aliphatic hydrocarbons (E)
     lodinated aromatic hydrocarbons (E)
     Iodine aliphatic compounds (T)
     Iodine aromatic compounds (T)
     lodoalkanes (T)
     lodohydrocarbons (T)
  RT Organic iodine compounds (E)
lodoalkanes (T)
  BT Alkanes (DENT)
    Halogen organic compounds (T)
    Hydrocarbons (DENT)
    Iodine organic compounds (T)
    lodohydrocarbons (T)
    Organic iodine compounds (E)
lodohydrocarbons (T)
  BT Halogen organic compounds (T)
    Hydrocarbons (DENT)
    Iodine organic compounds (T)
    Organic iodine compounds (E)
  NT lodoalkanes (T)
Iron  (DENT)
  BT Heavy metals (D)
    Metals (DENT)
Isocil - USE:
     Bromacil (*)
Kepone (*)
  BT Chlorine organic compounds (T)
  RT Insecticides (DENT)
    Mirex (*)
Ketones (DENT)
Krypton (DENT)
  BT Rare gases (DENT)
Krypton isotopes  (NT)
  NT Krypton 85 (ENT)
     Krypton 87 (E)
     Krypton 88 (E)
Lead (E)
  BT Heavy metals (D)
    Metals (DENT)
Lead (Metal)  (N)
  BT Heavy metals (D)
    Metals (DENT)
Lead azides (DT)
  BT Azides (DE)
    Lead inorganic compounds (T)
Lead organic compounds (NT)
  NT TEL (E)
    Tetraethyl  lead (T)
Lead (Metal) (T)
  BT Heavy metals (D)
    Metals (DENT)
Lead/tetraethyt -  USE:
    Tetraethyl  lead (T)
Lindane (*)
  BT Insecticides (DENT)
  RT Chlorine aliphatic compounds (T)
    Chlorine organic compounds (T)
    Cycloalkane compounds (T)
    Cyclohexane/hexachloro (*)
MCPA  herbicide (*)
  BT Herbicides (DET)
  RT Acetic acid (DNT)
    Acetic acids (*)
    Acetic acid/(chloro-methyl)phenoxy (*)
    Chlorine organic compounds (T)
 90

-------
MSMA herbicide (*)
  BT Herbicides (DET)
  RT Arsenic organic compounds (T)
    Methane arsonic acids (*)
Malathion (DET)
  UF Succinic acid/(diethyl-ester)-mercapto-
       (S-ester-with-O-O-dimethyl-'phosphor-
       odithioate)
  BT Insecticides  (DENT)
  RT Phosphorodithioates (*)
    Phosphorus organic compounds (T)
    Succinates (DT)
    Sulfur organic compounds (T)
Maleic anhydride (ET)
  BT Anhydrides  (ENT)
Manganese (DENT)
  BT Heavy metals (D)
    Metals (DENT)
Mercaptobenzothiazole - USE:
    Benzothiazole thiol (*)
Mercury  (DE)
  BT Heavy metals (D)
    Metals (DENT)
Mercury  compounds (DEN)
  NT Mercury inorganic compounds (T)
    Mercury organic compounds (T)
    Organic mercury compounds (E)
Mercury  inorganic compounds (T)
Mercury  (Metal) (N)
  BT Heavy metals (D)
    Metals (DENT)
Mercury  organic compounds (T)
  NT Mercury/chloro-methyl (*)
    Mercury/dimethyl (*)
    Mercury/methyl (*)
  RT Mercury compounds (DEN)
    Organic mercury compounds (E)
Mercury/chloro-methyl (*)
  BT Chlorine organic compounds (T)
    Mercury organic compounds (T)
Mercury/dimethyl (*)
Mercury(Metal)  (T)
  BT Heavy metals (D)
    Metals (DENT)
  BT Mercury organic compounds (T)
Mercury/methyl (*)
  UF Methyl mercury
  BT Mercury organic compounds (T)
Metham  pesticide (*)
  UF Vapan
  BT Pesticides (DENT)
  RT Carbamates (DET)
    Carbamic acid/dithio-methyl-(sodium-salt) (*)
    Sulfur organic compounds (T)
    Thiocarbamates (T)
Methane (DENT)
  BT Aliphatic hydrocarbons (T)
    Alkanes (DENT)
    Hydrocarbons (DENT)
Methane arsonic acids (*)
  BT Arsenic organic acids (T)
    Arsenic organic compounds (T)
    Organic acids (DET)
  RT DSMA herbicide  (*)
    Herbicides (DET)
Methane thiols (*)
  BT Sulfur organic compounds (T)
Methane/bis(dinitro-fluoroethoxy) (*)
  BT Fluorine aliphatic compounds (T)
    Fluorine organic compounds  (NT)
    Nitro  compounds (ENT)
Methane/bromo-chloro (*)
  BT Bromine aliphatic compounds (T)
    Bromine organic compounds  (T)
    Chlorine aliphatic compounds (T)
    Chlorine organic  compounds (T)
Methane/chloro-trifluoro (*)
  BT Chlorine aliphatic compounds (T)
    Chlorine organic  compounds (T)
    Fluorine aliphatic compounds (T)
    Fluorine organic compounds  (NT)
Methane/tetranitro (*)
  BT Nitro compounds (ENT)
    Nitrogen organic compounds (T)
Methanoindene/heptachloro-tetrahydro (*)
  BT Chlorine aliphatic compounds (T)
    Chlorine organic  compounds (T)
    Indenes (*)
    Methanoindenes (*)
  RT Heptachlor (T)
    Insecticides (DENT)
Methanoindenes (*)
  BT Indene (EN)
    Indenes (*)
  NT Methanoindene/heptachloro-tetrahydro (*)
  RT Heptachlor (*)
Methanol (E)
  BT Alcohols (DENT)
    Methanols (*)
    Methyl alcohols (N)
  RT Methyl alcohol (T)
Methanols (*)
  BT Alcohols (DENT)
  NT Methanol (E)
    Methyl alcohol (T)
  RT Methyl alcohols (N)
Methoxychlor  (*)
  UF DMDT insecticide
  BT Insecticides  (DENT)
  RT Aromatic compounds (DNT)
    Aromatics (E)
    Chlorine aliphatic compounds (T)
    Chlorine compounds (DEN)
Methyl alcohol (T)
  BT Alcohols (DENT)
    Methanols (*)
                                                                                              91

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     Methyl  alcohols (N)
  RT Methanol (E)
Methyl alcohols (N)
  BT Alcohols (DENT)
  NT Methanol (E)
     Methyl  alcohol (T)
  RT Methanols (*)
Methyl disulfides (*)
  BT Organic polysulfides (T)
     Organic sulfur compounds (DEN)
Methyl mercury - USE:
     Mercury/methyl (*)
Methyl parathion (*)
  BT Insecticides (DENT)
  RT Nitro compounds (ENT)
     Phosphorothioates (D)
     Phosphorothioic acid/O-O-(dimethyl-ester)-
        O-(nitrophenyl-ester) (*)
     Phosphorus organic compounds (T)
     Sulfur organic compounds (T)
Methyl sulfide (*)
  BT Organic sulfides (T)
     Sulfur organic compounds (T)
Mirex  (*)
  BT Insecticides (DENT)
  RT Chlorine aliphatic compounds (T)
     Chlorine organic compounds (T)
     Kepone (*)
     Methanocyclobuta(cd)pentalenes  (*)
Molybdenum (DENT)
  BT Heavy  metals (D)
     Metals  (DENT)
NTA (E)
  BT Amino acids (DENT)
  RT Acetic  acid/nitrilo-tri (*)
Naled  (*)
  BT Insecticides (DENT)
  RT Bromine aliphatic compounds (T)
     Bromine organic compounds (T)
     Chlorine aliphatic compounds (T)
     Chlorine organic compounds (T)
     Phosphoric acid/((dibromo-dichloro)ethyl-
        ester)-(dimethyl-ester) (*)
     Phosphorus organic compounds (T)
Naphthalene (ENT)
  BT Aromatic compounds (DNT)
     Aromatic polycyclic hydrocarbons (DT)
     Aromatics (E)
     Naphthalenes (D)
     Polycyclic aromatic hydrocarbons (E)
Naphthalene compounds (T)
  BT Aromatic compounds (DNT)
     Aromatic  polycyclic hydrocarbons (DT)
     Aromatics (E)
     Polycyclic aromatic hydrocarbons (E)
  NT Carbamic acid/methyl-(naphthyl-ester) (*)
  RT Aldrin  (ET)
     Dieldrin (DENT)
     Endrin (NT)
Naphthalenes  (D)
  BT Aromatic compounds (DNT)
     Aromatic polycyclic hydrocarbons (DT)
     Aromatics (E)
     Polycyclic aromatic hydrocarbons (E)
  NT Naphthalene  (N)
Neon (DENT)
  BT Rare gases (DENT)
  RT Neon isotopes (ENT)
Neon isotopes  (ENT)
  NT Neon 21 (E)
Nickel  (DENT)
  BT Heavy metals  (D)
     Metals (DENT)
Nitrates  (DEN)
  BT Nitrogen compounds (DEN)
  NT Cellulose nitrate (NT)
     Inorganic nitrates (NT)
     Nitrocellulose  (DE)
     Organic  nitrates(NT)
Nitric acid (DENT)
  BT Inorganic acids  (DET)
     Nitrogen inorganic compounds (T)
Nitric oxide (EN)
  BT Nitrogen inorganic compounds (T)
     Nitrogen oxides  (DENT)
     Oxides (DENT)
  RT Nitrogen oxide(NO) (*)
Nitrites (DENT)
  NT Acetic acid/nitrilo-tri (*)
     Acrylonitriles (NT)
  RT Cycanides  (DENT)
     Nitrogen organic compounds (T)
Nitrilotriacetic acid - USE:
     Acetic acid/nitrilo-tri (*)
     or
     NTA (E)
Nitrites (DENT)
  RT Inorganic nitrates  (NT)
     Nitrogen inorganic compounds (T)
Nitro compounds (ENT)
  NT Benzene/chloro-nitro (*)
     Benzene/nitro-pentachloro (*)
     Dinitrophenol (E)
     DNT (D)
     Ethane/dichloro-nitro (*)
     Methane/bis(dinitro-fluoroethoxy) (*)
     Methane/tetranitro (*)
     Nitrobenzene  (E)
     Nitrobenzenes (DNT)
     Nitrophenol (E)
     Nitrophenols (DT)
     Parathion (D)
     Phosphorothioic  acid/O-O-(diethyl-ester)-O-
       (nitrophenyl-ester) (*)
     Phosphorothioic  acid/O-O-(dimethyl-ester)-O
       (nitrophenyl-ester) (*)
92

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     Picric acid (DET)
     Styphnates (DNT)
     TNT (DE)
     Trinitrotoluene (NT)
  RT Methyl parathion (*)
     Parathion (D)
     PCNB fungicide (*)
Nitrobenzene (E)
  BT Aromatic hydrocarbons (DT)
     Aromatics (E)
     Nitro compounds (ENT)
     Nitrobenzenes (DNT)
Nitrobenzenes (DNT)
  BT Aromatic hydrocarbons (DT)
     Aromatics (E)
     Nitro compounds (ENT)
  NT Benzene/chloro-nitro (*)
     Dinitrophenol (E)
     Nitrobenzene (E)
     Nirophenol (E)
     Nitrophenols (DT)
     Picric acid (DET)
     Styphnates (DNT)
     TNT (DE)
     Trinitrotoluene (NT)
Nitrocellulose (DE)
  BT Nitrates (DEN)
     Organic nitrates (NT)
  RT Cellulose nitrate (NT)
     Chemical explosives (E)
     Explosives (DENT)
Nitrochlorobenzene  - USE:
     Benzene/chloro-nitro (*)
Nitrogen dioxide (ENT)
  BT Nitrogen inorganic compounds (T)
     Nitrogen oxides  (DENT)
     Oxides  (DENT)
Nitrogen heterocyclic compounds (DT)
  NT Bipyridinium/dimethyl (*)
     HMX (DNT)
     Phosphorothioic  acid/O-O-(diethyl-ester)-
       O-((isopropyl-methyl)pyrimidinyl-ester) (*)
     Pyrenes (NT)
     Pyridines (DENT)
     RDX (DNT)
     Triazines (DET)
     Triazine/chloro-ethylamino-isopropylamino (*]
     Uracil/bromo-butyl-methyl (*)
  RT Atrazine (*)
     Bromacil (*)
     Diazinon (T)
     Paraquat herbicide (*)
Nitrogen inorganic compounds (T)
  BT Nitrogen compounds (DEN)
  NT Ammonia (DENT)
    Cyanides (DENT)
     Nitric acid (DENT)
     Nitric oxide (EN)
     Nitrogen oxides (DENT)
     Nitrogen dioxide (ENT)
     Nitrogen oxide(NO) (T)
     Nitrogen oxide(N20) (T)
     Nitrogen pentoxide (T)
     Nitrous oxide (DE)
     Nitrous oxides (N)
Nitrogen organic compounds  (T)
  BT Nitrogen compounds (DEN)
  NT Benzene/nitro-pentachloro (*)
     HMX  (DNT)
     Hydrazine (DE)
     Hydrazines (NT)
     Methane/tetranitro (*)
     Peroxybenzoyl nitrate (*)
     Peroxyacetyl nitrate (*)
     Pyrenes (NT)
     Pyridines (DENT)
  RT Organic nitrogen compounds (DE)
     PCNB fungicide (*)
Nitrogen oxide(N2O) (T)
  BT Nitrogen inorganic compounds (T)
     Nitrogen oxides (DENT)
     Oxides (DENT)
  RT Nitrous oxide (DE)
Nitrogen oxide (NO) (T)
  BT Nitrogen inorganic compounds (T)
     Nitrogen oxides (DENT)
     Oxides (DENT)
  RT Nitric oxide (EN)
Nitrogen oxides (DENT)
  BT Nitrogen inorganic compounds (T)
     Oxides (DENT)
  NT Nitric oxide (EN)
     Nitrogen dioxide (ENT)
     Nitrogen oxide(NO) (T)
     Nitrogen oxide(N2O) (T)
     Nitrogen pentoxide (T)
     Nitrous  oxide (DE)
     Nitrous  oxides (N)
Nitrogen pentoxide (T)
  BT Nitrogen inorganic compounds (T)
     Nitrogen oxides (N)
     Oxides (DENT)
Nitroglycerin (DENT)
  BT Organic nitrates (NT)
  RT Chemical  explosives (E)
     Explosives (DENT)
     Glycerides (DNT)
Nitrophenol (E)
  BT Aromatic hydrocarbons (DT)
     Aromatics (E)
     Nitro  compounds (ENT)
     Phenols  (DENT)
  RT Dinitrophenol (E)
Nitrophenols (DT)
  BT Aromatic compounds (DNT)
     Aromatic hydrocarbons (DT)
                                                                                                93

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    Aromatics (E)
    Nitro compounds (ENT)
    Phenols (DENT)
  NT Dinitrophenol (E)
    Picric acid (DET)
    Styphnates (DNT)
Nitrous oxide (DE)
  BT Nitrogen inorganic compounds (T)
    Nitrogen  oxides  (DENT)
    Oxides (DENT)
  RT Nitrogen oxide(N20) (T)
    Nitrous oxides (N)
Nitrous oxides (N)
  BT Nitrogen inorganic compounds (T)
    Nitrogen  oxides  (N)
    Oxides (DENT)
  RT Nitrogen oxide(N2O) (T)
    Nitrous oxide (DE)
Norbornenes  (*)
  RT Endosulfan (*)
Olefins - USE:
    Alkene compounds (T)
    or
    Alkene hydrocarbons (T)
    or
    Alkenes (DEN)
Orange herbicide (*)
  BT Defoliants (*)
    Herbicides (DET)
  RT D 2-4 herbicide (*)
    T 2-4-5 herbicide (*)
    Chlorine aromatic compounds (T)
    Chlorine organic compounds (T)
Organic acids (DET)
  NT Aliphatic acids  (DT)
    Phosphinic acids (DET)
    Phosphonic acids (DET)
    Phosphoric organic acids (*)
    Sulfur organic acids (T)
    Acetic acids  (*)
    Benzoic acid/amino-dichloro (*)
    Carbamic acid (D)
    Methane  arsonic acids (*)
  RT Amiben (*)
    Carboxylic acids (DENT)
    DSMA herbicide (*)
    Humic acids  (ET)
Organic arsenic compounds  (E)
  BT Arsenic compounds (DEN)
  NT See under  Arsenic organic compounds
  RT Arsenic organic compounds (T)
Organic boron compounds (EN)
  BT Boron compounds (DEN)
  NT See under  Boron organic compounds
  RT Boron organic compounds (T)
Organic bromine compounds (E)
  BT Bromine compounds (DEN)
    Halogen organic compounds (T)
    Organic halogen compounds (E)
  NT See under Bromine organic compounds
  RT Bromine organic compounds (T)
Organic chlorine compounds (E)
  BT Chlorine compounds (DEN)
    Halogen organic compounds (T)
    Organic halogen compounds (E)
  NT See under Chlorine organic compounds
  RT Chlorine organic compounds (T)
Organic compounds (DENT)
Organic fluorine compounds (E)
  BT Fluorine compounds (DEN)
    Halogen organic compounds (T)
    Organic fluorine compounds (E)
  NT See under Fluorine organic compounds
  RT Fluorine organic compounds (NT)
Organic halogen compounds (E)
  BT Halogen compounds (DEN)
  NT See under Halogen organic compounds
  RT Halogen organic compounds (T)
Organic iodine compounds (E)
  BT Halogen organic compounds (T)
    Iodine compounds  (DEN)
  NT See uner  Iodine organic compounds
  RT 'Iodine organic compounds (T)
Organic mercury compounds (E)
  BT Mercury compounds (DEN)
  NT See under Mercury organic compounds
  RT Mercury organic compounds (T)
Organic nitrates (NT)
  BT Nitrates (DEN)
    Nitrogen organic compounds (T)
  NT Cellulose  nitrate (NT)
    Ethylene glycol/dinitrate (*)
    Nitrocellulose (DE)
    Nitroglycerin (DENT)
    Peroxybenzoyl nitrate (*)
    Peroxyacetyl nitrate (*)
Organic nitrogen compounds (DE)
  BT Nitrogen compounds (DEN)
  NT See under Nitrogen organic compounds
  RT Nitrogen organic compounds (T)
Organic oxygen compounds (DE)
  BT Oxygen compounds (DEN)
  RT Oxygen organic compounds (T)
Organic phosphates (T)
  BT Phosphates (DEN)
    Phosphorus compounds (DEN)
    Phosphorus organic compounds (T)
Organic phosphorus compounds (DEN)
  NT See under Phosphorus organic compounds
  RT Organic phosphates (T)
    Phosphorus organic compounds (T)
Organic polysulfides (T)
  BT Organic sulfides (T)
    Sulfur organic compounds (T)
Organic sulfates (T)
  BT Sulfates (DENT)
 94

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     Sulfur organic compounds (T)
  RT Sulfur organic acid esters (*)
Organic sulfides (T)
  BT Sulfur organic compounds (T)
  NT Carbon disulfide (DNT)
     Methyl sulfide (*)
     Organic  polysulfides (T)
  RT Sulfides  (DEN)
Organic sulfur compounds (DEN)
  BT Sulfur compounds (DEN)
  NT See under  Sulfur organic compounds
  RT Sulfur organic compounds (T)
Organophosphinic acids (E)
  BT Phosphorus organic compounds (T)
Oxidizers (DNT)
  RT Aldehydes (DENT)
     Ketones (DENT)
     Peroxy esters (T)
     Peroxy organic compounds (T)
     Peroxyacetyl nitrate (*)
     Peroxybenzoyl nitrate (*)
     Photochemical oxidants (E)
Oxygen heterocyclic compounds (T)
  BT Oxygen  organic compounds  (T)
  NT Dioxin/tetrachloro-dibenzo (*)
     Furans (DET)
Oxygen organic compounds (T)
  NT Furans (DET)
  RT Organic oxygen compounds  (DE)
Ozone (DENT)
PAH -  USE:
     Aromatic polycyclic hydrocarbons (DT)
     or
     Polycyclic aromatic hydrocarbons (E)
PAN - USE:
     Peroxyacetyl nitrate (*)
Paradihydroxybenzene -  USE:
     Hydroquinone (T)
Paraffins - USE:
     Alkanes  (DENT)
Paraquat herbicide (*)
  BT Herbicides  (DET)
  RT Bipyridinium/dimethyl (*)
     Nitrogen  heterocyclic compounds (DT)
     Pyridinium compounds (E)
     Quaternary ammonium salts  (T)
Parathion  (D)
  BT Insecticides  (DENT)
  RT Nitro compounds (ENT)
     Phosphorothioates (D)
     Phosphorothioic acid/O-O-(dimethyl-ester)-
       O-(nitrophenyl-ester) (*)
    Phosphorus organic compounds (T)
     Sulfur organic compounds (T)
PBBs - USE:
     Biphenyl/bromo (*)
     and
     Polybrominated biphenyls (*)
PCBs - USE:
    Biphenyl/chloro (*)
    and
    Polychlorinated biphenyls (*)
PCNB fungicide (*)
  UF Pentachloronitrobenzene
  BT Fungicides (DENT)
  RT Aromatic compounds (DNT)
    Benzene/nitro-pentachloro (*)
    Chlorine aromatic compounds (T)
    Chlorine organic compounds (*)
    Nitro compounds (ENT)
    Nitrogen organic compounds (T)
Pentachloronitrobenzene - USE:
    Benzene/nitro-pentachloro (*)
    and
    PCNB fungicide (*)
Pentane/perfluoro (*)
  BT Fluorine aliphatic compounds (T)
    Fluorine organic compounds (NT)
Peroxy esters (T)
  BT Esters (DENT)
    Peroxy organic compounds (T)
  NT Peroxyacetyl nitrate (*)
    Peroxybenzoyl nitrate  (*)
  RT Oxidizers (DNT)
    Photochemical oxidants (E)
Peroxy organic compounds  (T)
  NT Peroxy esters (T)
    Peroxyacetyl  nitrate (*)
    Peroxybenzoyl nitrate  (*)
  RT Oxidizers (DNT)
    Photochemical oxidants (E)
Peroxyacetyl nitrate (*)
  BT Nitrogen organic compounds (T)
    Organic nitrates (NT)
    Peroxy esters (T)
    Peroxy organic compounds (T)
  RT Oxidizers (DNT)
    Photochemical oxidants (E)
Peroxybenzoyl nitrate (*)
  BT Nitrogen organic compounds (T)
    Organic nitrates (NT)
    Peroxy esters (T)
    Peroxy organic compounds (T)
  RT Oxidizers (DNT)
    Photochemical oxidants (E)
Pesticides (DENT)
  NT Aldicarb (*)
    Ciodrin (*)
    Cineb (*)
    Cirame (*)
    Metham pesticide (*)
    Polycarbacine (*)
  RT Carbamic acid/((dihydro-dimethyl)benzofuranyl-
       ester)-methyl (*)
    Carbamic acid/dithio-methyl-(sodium-salt) (*)
    Disulfide/bis(dimethyl-thiocarbamoyl) (*)
                                                                                                95

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Phenol/chloro (*)
  BT Aromatic compounds (DNT)
    Chlorine aromatic compounds (T)
    Chlorine organic compounds (T)
    Phenols (DENT)
Phenols (DENT)
  NT Dinitrophenol (E)
    Hydroquinone (T)
    Nitrophenol (E)
    Nitrophenols (DT)
    Phenol/chloro (*)
Phenylamine -  USE:
    Anilines (DT)
Phenylamines (D)
  BT Amines (DENT)
    Aromatic compounds (DNT)
    Aromatics (E)
    Arylamines (T)
  RT Anilines (DT)
Phosphates (DEN)
  NT Inorganic phosphates (T)
    Organic phosphates (T)
  RT Phosphoric acid esters (E)
Phosphinates (DT)
  BT Esters (DENT)
    Phosphorus organic compounds (T)
Phosphinic acid esters (E)
  BT Esters (DENT)
    Phosphorus organic compounds (T)
Phosphinic acids (DET)
  BT Organic acids (DET)
    Phosphorus organic compounds (T)
Phosphonates (DET)
  BT Esters (DENT)
    Phosphorus organic compounds (T)
Phosphonic acid  esters  (E)
  BT Esters (DENT)
    Phosphorus organic compounds (T)
Phosphonic acids (DET)
  BT Organic acids (DET)
    Phosphorus organic compounds (T)
Phosphoric acid esters (E)
  BT Esters (DENT)
    Phosphorus organic compounds (T)
Phosphoric acid/((dibromo-dichloro)ethyl-ester)-
 (dimethyl-ester) (*)
  BT Bromine aliphatic compounds (T)
     Bromine organic compounds (T)
     Chlorine aliphatic compounds (T)
    Chlorine organic compounds (T)
    Phosphorus organic compounds (T)
  RT Insecticides (DENT)
     Naled (*)
Phosphoric acid/(dichlorovinyl-ester)-(dimethyl-
 ester)  (*)
  BT Chlorine aliphatic compounds (T)
    Chlorine organic compounds (T)
    Phosphorus organic compounds (T)
  RT DDVP insecticide (*)
     Insecticides (DENT)
Phosphoric organic acid esters (T)
  BT Esters (DENT)
    Phosphorus organic compounds (T)
Phosphoric organic acids (*)
  BT Organic acids (DET)
    Phosphorus organic compounds (T)
Phosphorodithioates (*)
  BT Organic phosphates (T)
    Organic phosphorus compounds (DEN)
    Phosphorus organic compounds (T)
  RT Malathion (DET)
Phosphorothioates (D)
  BT Phosphorus organic  compounds (T)
    Sulfur organic compounds (T)
  NT Phosphorothioic acid/O-O-(diethyl-ester)-
       O-((isopropyl-methyl)pyrimidinyl-ester) (*
     Phosphorothioic acid/O-O-(diethyl-ester)-
       O(nitrophenyl-ester (*)
     Phosphorothioic acid/O-O-(dimethyl-ester)-
       O-(nitrophenyl-ester)  (*)
    Phosphorothioic acid/thio-diphenylene-
     bis(O-O-(dimethyl-ester)-thio) (*)
  RT Abate (*)
     Diazinon (T)
     Methyl parathion (*)
     Parathion (D)
Phosphorothioic acid/O-O- (diethyl-ester) -
 O-(nitrophenyl-ester) (*)
  BT Nitro compounds (ENT)
     Phosphorothioates (D)
    Phosphorus organic compounds (T)
    Sulfur organic compounds (T)
  RT Insecticides (DENT)
     Methyl parathion (*)
Phosphorothioic acid/O-O-(diethyl-ester) -O-
 ((isopropyl-methyl) pyrimidinyl-ester (*)
  BT Nitrogen heterocyclic compounds (DT)
     Phosphorothioates (D)
    Phosphorus organic compounds (T)
    Sulfur organic compounds (T)
  RT Diazinon  (T)
     Insecticides (DENT)
Phosphorothioic acid/O-O-(dimethyl-ester)-
 O-(nitrophenyl-ester) (*)
  BT Nitro compounds (ENT)
     Phosphorothioates (D)
    Phosphorus organic compounds (T)
    Sulfur organic compounds (T)
  RT Insecticides (DENT)
    Parathion  (D)
Phosphorothioic acid/thio-diphenylene-bis
 (O-O-(dimethyl-ester)-thio) (*)
  BT Aromatic compounds (DNT)
     Phosphorothioates (D)
    Phosphorus organic compounds (T)
     Sulfur organic compounds (T)
 96

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  RT Abate (*)
     Insecticides (DENT)
Phosphorus (DENT)
  NT Phosphorus 32 (EN)
     Phosphorus 33 (E)
Phosphorus compounds (DEN)
  NT Organic phosphorus compounds (DEN)
    Phosphorus inorganic compounds (T)
    Phosphorus organic compounds (T)
Phosphorus inorganic compounds (T)
  BT Phosphorus compounds (DEN)
Phosphorus isotopes (ENT)
  NT Phosphorus 32 (EN)
     Phosphorus 33 (E)
Phosphorus organic compounds (T)
  BT Phosphorus compounds (DEN)
  NT Organic  phosphates (T)
     Organophosphinic acids (E)
     Phosphinates (DT)
     Phosphinic acid esters (E)
     Phosphinic acids (DET)
     Phosphonates (DET)
     Phosphonic acid esters  (E)
     Phosphonic acids (DET)
     Phosphoric organic  acids (*)
     Phosphoric acid/((dibromo-dichloro)ethyl-
       ester)-(dimethyl-ester) (*)
     Phosphoric acid/(dichlorovinyl-ester)-
       (dimethyl-ester) (*)
     Phosphorothioates (D)
     Phosphorothioic acid/O-O-(diethyl-ester)-
       O-((isopropyl-methyl)pyrimidinyl-ester) (*)
     Phosphorothioic/acid/O-O-(diethyl-ester)-
       O-(nitrophenyl-ester) (*)
     Phosphorothioic acid/O-O-(dimethyl-ester)-
       O-(nitrophenyl-ester) (*)
     Phosphorothioic acid/thio-diphenylenene-
       bis(O-O-(dimethyl-ester)-thio) (*)
     Thiophosphoric acid  esters (E)
  RT Abate (*)
     Cholinesterase inhibitors (DT)
     Ciodrin (*)
     DDVP insecticides (*)
     Diazinon  (T)
     Malathion (DET)
     Methyl parathion (*)
     Naled (*)
    Organic phosphorus compounds (DEN)
     Parathion (D)
     Phosphoric acid esters (E)
Photochemical oxidants  (E)
  RT Aldehydes (DENT)
     Ketones (DENT)
     Oxidizers  (DNT)
     Peroxy esters (T)
    Peroxy organic compounds (T)
     Peroxyacetyl nitrate (*)
     Peroxybenzoyl nitrate (*)
Phthalates (DENT)
  BT Esters (DENT)
Plutonium (DENT)
  RT Radioactive isotopes (DNT)
Plutonium isotopes (DENT)
  RT Radioactive isotopes (DNT)
Plutonium oxides  (ENT)
  BT Oxides (DENT)
    Plutonium compounds (DENT)
PNAs - USE:
    Aromatic polycyclic  hydrocarbons (DT)
    or
    Polycyclic aromatic hydrocarbons (E)
Polybrominated biphenyls (*)
  UF PBBs
  BT Biphenyls (*)
    Bromine organic compounds (T)
    Diphenyl compounds (N)
    Organic bromine compounds (E)
  RT Biphenyl/bromo (*)
Polychlorinated biphenyls (*)
  UF PCBs
  BT Biphenyls (*)
    Chlorine organic compounds (T)
    Diphenyl compounds (N)
    Organic chlorine compounds (E)
  RT Biphenyl/chloro (*)
Polycyclic aromatic hydrocarbons (E)
  UF PAH
    PNAs
    Polynuclear aromatic hydrocarbons
  BT Aromatic hydrocarbons (DT)
    Aromatics (E)
    Hydrocarbons (DENT)
  NT Anthracene (ENT)
    Anthracenes (D)
    Benzanthracene (E)
    Benzanthracenes (T)
    Benzopyrene (E)
    Benzopyrenes (*)
    Indene (EN)
    Naphthalene (ENT)
    Naphthalenes (D)
    Phenanthrene (ENT)
    Phenanthrenes (D)
    Pyrenes (NT)
  RT Aromatic polycyclic  hydrocarbons (DT)
  DEF Hydrocarbons containing two or more fused
    rings, at lease on of which is  aromatic.
Polynuclear aromatic hydrocarbons - USE:
    Aromatic polycyclic  hydrocarbons (DT)
    or
    Polycyclic aromatic hydrocarbons (E)
Polyvinyl chloride  (DNT)
  UF Geon
  BT Addition  resins (NT)
    Chlorine organic compounds (T)
    Polyvinyls (E)
                                                                                                 97

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     Plastics (DENT)
     Thermoplastic  resins (DNT)
     Vinyl chloride  resins (T)
     Vinyl polymers (N)
     Vinyl resins (T)
  RT PVC (E)
Propanone - USE:
     Acetones (D)
Propylene  (NT)
  BT Alkene compounds (T)
     Alkene hydrocarbons (T)
     Alkenes (DEN)
PVC (E)
  BT Chlorine organic compounds (T)
     Vinyl chloride  resins (T)
  RT Polyvinyl chlorine (DNT)
Pyrenes  (NT)
  BT Aromatic polycyclic hydrocarbons (DT)
     Nitrogen heterocyclic compounds (DT)
     Nitrogen organic compounds (T)
     Polycyclic aromatic hydrocarbons (E)
  NT Benzopyrene  (*)
     Benzopyrenes  (*)
Pyridines (DENT)
  BT Nitrogen heterocyclic compounds (DT)
     Nitrogen organic compounds (T)
Rare gases (DENT)
  NT Argon (DENT)
     Krypton (DENT)
     Neon (DENT)
     Xenon (DENT)
RDX (DNT)
  UF Cyclonite
    Cyclotrimethylenetrinitramine
  BT Nitrogen heterocyclic compounds (DT)
  RT Chemical explosives (E)
     Explosives (DENT)
Selenium (DENT)
Selenium dioxide  (*)
  BT Selenium compounds (DEN)
Serpentine  (ENT)
  UF Chrysotile
  BT Silicate  minerals (T)
  RT Asbestos (DENT)
     Chromites (NT)
     Magnesium silicates (ET)
     Olivine (DENT)
     Olivines (E)
     Serpentinite (T)
Sevin - USE:
     Carbaryl (*)
Silicate minerals  (T)
  NT Asbestos (DENT)
Silicones (DENT)
  BT Silicon organic compounds (T)
Strontium isotopes (ENT)
  NT Strontium 90  (ENT)
  RT Radioactive isotopes (DNT)
Sulfates (DENT)
  BT Sulfur inorganic compounds (T)
  RT Sulfuric acid esters (E)
Sulfides (DEN)
  BT Sulfur inorganic compounds (T)
  NT Inorganic polysulfides (T)
     Inorganic  sulfides (NT))
  RT Organic polysulfides (T)
     Organic sulfides (T)
Sulfites (DENT)
  BT Sulfur inorganic compounds (T)
Sulfonates (DENT)
  BT Esters (DENT)
    Sulfur organic compounds (T)
Sulfur compounds (DEN)
  NT Organic sulfur compounds (DEN)
    Sulfur inorganic compounds (T)
    Sulfur organic compounds (T)
Sulfur dioxide (ET)
  BT Oxides (DENT)
    Sulfur inorganic compounds (T)
     Sulfur oxides (DENT)
Sulfur fluorides  (ENT)
  BT fluorides  (DENT)
    Fluorine inorganic compounds (T)
    Sulfur inorganic compounds (T)
Sulfur hexafluoride (T)
  BT Fluorides  (DENT)
    Fluorine inorganic compounds (T)
     Sulfur fluorides (ENT)
    Sulfur inorganic compounds (T)
Sulfur inorganic compounds  (T)
  BT Sulfur compounds (DEN)
     Inorganic  polysulfides  (T)
  NT Hydrogen sulfide (DM)
     Hydrogen sulfides (E)
     Sulfates (DENT)
     Sulfides (DENT)
     Sulfites (DENT)
     Sulfur dioxide (ET)
     Sulfur fluorides (ENT)
     Sulfur hexafluroide (T)
     Sulfur monoxide (T)
     Sulfur oxides (DENT)
     Sulfur trioxide (ET)
     Sulfuric acid (DENT)
     Sulfuric acid esters (E)
Sulfur monoxide (T)
  BT Oxides (DENT)
    Sulfur inorganic compounds (T)
     Sulfur oxides (DENT)
Sulfur organic acid esters (T)
  BT Esters (DENT)
    Sulfur organic compounds (T)
Sulfur organic acids (T)
  BT Organic acids (DET)
    Sulfur organic compounds (T)
Sulfur organic compounds (T)
 98

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  BT Sulfur compounds (DEN)
  NT Benzothiazole thiol (*)
     Benzothiazoles (ET)
     Carbamic acid/dithio-methyl-(sodium-salt) (*)
     Carbamic acid/ethylene-bis(dithio)- (*)
     Carbon disulfide (DNT)
     Cyclohexene dicarboximide/N-((trichloro-
       methyl)thio) (*)
     Dimethyl disulfide  (*)
     Disulfide/ bis(dimethyl-thiocarbamoyl)  (*)
     Disulfide/dimethyl  (*)
     Methane thiols (*)
     Methyl sulfide (*)
     Organic  polysulfides (T)
     Phosphorothioic acid/O-O-(diethyl-ester)-
       O-((isopropyl-methyl)pyrimidinyl-ester) (*)
     Phosphorothioic acid/O-O-(diethyl-ester)-
       O(nitrophenyl-ester) (*)
     Phosphorothioic acid/thio-diphenylene-bis(O-
       O-(dimethyl-ester)-thio)  (*)
     Sulfur organic acid esters (T)
     Sulfur organic acids (T)
  RT Abate (*)
     Aldicarb (*)
     Captan (*)
     Diazinon (T)
     Endosulfan (*)
     Malathion (DET)
     Metham  pesticide (*)
     Methyl parthion (*)
     Organic sulfur compounds (DEN)
     Parathion (D)
Sulfur oxides (DENT)
  BT Sulfur inorganic compounds (T)
     Oxides (DENT)
  NT Sulfur dioxide (ET)
     Sulfur monoxide (T)
     Sulfur trioxide (ET)
Sulfur trioxide (ET)
  BT Oxides (DENT)
     Sulfur inorganic compounds (T)
     Sulfur oxides  (DENT)
Sulfuric acid (DENT)
  UF Oleum
  BT Inorganic acids (DET)
     Sulfur inorganic compounds (T)
Sulfuric acid esters (E)
  BT Sulfur inorganic compounds (T)
  RT Sulfates (DENT)
T 2-4-5 herbicide (*)
  BT Herbicides (DET)
  RT Acetic acid/trichlorophenoxy (*)
     Chlorine  aromatic  compounds (T)
     Chlorine  organic compounds (T)
TEL (E)
  BT Lead organic  compounds (NT)
  RT Antiknock additives (NT)
     Tetraethyl lead (T)
Terpene compounds (T)
  NT Toxaphene (*)
  RT Terpene hydrocarbons (T)
     Insecticides (DENT)
Tetrachloroethylene (T)
  BT Alkene compounds  (T)
     Alkenes (DEN)
     Chlorine aliphatic compounds (T)
     Chlorine organic compounds (T)
Tetraethyl lead (T)
  BT Lead organic compounds (NT)
  RT Antiknock additives (NT)
     TEL (E)
Tetrafluoroborates - USE:
     Fluoborates (D)
Tetranitrotetrazacyclooctane - USE:
     HMX (DNT)
Thiocarbamates (T)
  BT Carbamates (DET)
     Carbamates (Tradename) (N)
     Carbamic acid esters  (E)
     Esters (DENT)
     Organic sulfur compounds (DEN)
     Sulfur organic compounds (T)
  NT Carbamic acid/dithio-methyl-(sodium-salt) (*
  RT Metham pesticide (*)
Thiodan - USE:
     Endosulfan (*)
Thiophosphoric acid esters  (E)
  BT Esters (DENT)
     Phosphorus organic  compounds (T)
  NT See under  Phosphorothioates
  RT Phosphorothioates (D)
Titanium (ENT)
  BT Heavy metals (D)
     Metals (DENT)
Titanium dioxide (DT)
  UF Anatase
     Titania
  BT Titanium oxides (DENT)
TNT (DE)
  BT Aromatic hydrocarbons (DT)
     Aromatics (E)
     Nitro compounds (ENT)
  RT Toluene (ENT)
     Trinitrotoluene (NT)
Toluidines (DET)
  BT Amines (DENT)
     Anilines (DT)
     Aromatic compounds (DNT)
Toxaphene (*)
  BT Insecticides (DENT)
  RT Camphene (ET)
     Camphenes (*)
     Chlorine organic compounds (T)
     Terpenes (DEN)
Triazine/chloro-ethylamino-isopropylamino (*)
  BT Amines (DENT)
                                                                                                 99

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     Chlorine organic compounds (T)
     Nitrogen heterocyclic compounds (DT)
     Triazines (DET)
  RT Atrazine (*)
     Herbicides (DET)
Triazines (DET)
Triazines (DET)
  BT Nitrogen heterocyclic compounds (T)
Trichloroethane - USE:
     Ethane/trichloro (*)
Trichloroethanes (D)
  BT Chlorine organic compounds (T)
     Chloroethanes (DT)
  NT Ethane/trichloro (*)
Trichloroethylene - USE:
     Ethylene/trichloro (*)
Trinitrotoluene  (NT)
  BT Aromatic hydrocarbons (DT)
     Aromatics (E)
     Nitro compounds (ENT)
  RT TNT (DE)
     Toluene (ENT)
Uracil (N)
  BT Amides (DENT)
     Nitrogen heterocyclic compounds (DT)
  NT Uracils (DET)
     Uracil/bromo-butyl-methyl (*)
  RT Bromacil (*)

Uracil/bromo-butyl-methyl (*)
  BT Amides (DENT)
     Bromine organic  compounds (T)
     Nitrogen heterocyclic compounds (DT)
     Uracils (DET)
  RT Bromacil (*)
     Herbicides (DET)

Uracils  (DET)
  BT Amides (DENT)
     Nitrogen heterocyclic compounds (DT)
  NT Uracil (N)
Uranium (DENT)
  BT Heavy metals (D)
    Metals (DENT)
Uranium isotopes (ENT)
  NT Uranium 233 (ENT)
    Uranium 235 (ENT)
  RT Radioactive isotopes (DNT)
Vapan - USE:
    Methan pesticide (*)
Vinyl chloride  (T)
  UF Chloroethylene
  BT Chlorine aliphatic compounds (T)
    Chlorine organic compounds (T)
  RT Vinyl chloride resins (T)
    PVC (E)
Vinyl cyanide - USE:
    Acrylonitriles (NT)
Xenon  (DENT)
  BT Rare gases (DENT)
Xenon  isotopes (ENT)
  NT Xenon 133 (EN)
    Xenon  135 (EN)
    Xenon  138 (E)
Xylene  (N)
Xylenes (DET)
  UF Dimethylbenzene
  BT Aromatic compounds (DNT)
    Aromatics (E)
Zinc (DENT)
  BT Heavy metals (D)
    Metals (DENT)
    Transition metals (DNT)
  RT Zinc isotopes (ENT)
Zirconium (DENT)
  BT Heavy metals (D)
    Metals (DENT)
    Transition metals (DNT)
  RT Zirconium isotopes (ENT)
Zirconium isotopes (ENT)
  NT Zirconium 95 (EN)
  RT Radioactive isotopes (DNT)
              For  Reference
                                                               4 U. S. GOVERNMENT PRINTING OFFICE : 1977--240-848/170
           Not to be taken from this room
100

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