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OLS Field Name OLS Field Data
Main Title Uses, limitations and technical basis of procedures for quantifying relationships between photochemical oxidants and precursors.
CORP Author United States. Environmental Protection Agency. Monitoring and Data Analysis Division.
Publisher U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards [Monitoring and Data Analysis Division] ; Available from National Technical Information Service,
Year Published 1977
Report Number EPA 450/2-77-021a
Stock Number PB-278 142
OCLC Number 04298116
Subjects Air--Pollution--Analysis. ; Photochemistry--Research. ; Ozone.
Additional Subjects Air pollution control ; Ozone ; Oxidizers ; Nitrogen oxides ; Hydrocarbons ; Concentration(Composition) ; Atmospheric models ; Atmospheric diffusion ; Reaction kinetics ; Photochemistry ; Nomographs ; Wind(Meteorology) ; Urban areas
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EHAM  TD890.U55 Region 1 Library/Boston,MA 04/29/2016
EJBD ARCHIVE EPA 450-2-77-021a Headquarters Library/Washington,DC 10/12/2010
EKAM  TD890.U55 Region 4 Library/Atlanta,GA 04/10/1998
EKBD  EPA-450/2-77-021a Research Triangle Park Library/RTP, NC 07/27/2001
ERAD  EPA 450/2-77-021a Region 9 Library/San Francisco,CA 01/23/2013
ESAD  EPA 450-2-77-021A Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-278 142 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 105 pages in various pagings : illustrations ; 28 cm.
Abstract Approaches for relating ozone to non-methane hydrocarbon and oxides of nitrogen controls are discussed. All procedures are only applicable in addressing the oxidant problem in urban areas. Available procedures include use of Eulerian and Lagrangian photochemical dispersion models, a new approach called the Empirical Kinetic Modeling Approach (EKMA), proportional rollback and statistical approaches. EKMA, rollback and statistical models are most useful in estimating the degree of reduction needed to attain the National Ambient Air Quality Standard (NAAQS) for oxidant and for estimating reduction in maximum hourly ozone concentration accompanying specified levels of precursor controls. Models are useful for these purposes as well as others. The issue of long range transport of ozone/precursors is discussed. It is concluded that ozone transported above the surface-based nocturnal inversion layer is likely to be the facet of transport exhibiting the greatest impact on maximum ozone levels in urban areas. Procedures for integrating transport considerations into the previously mentioned analytical approaches are discussed.
Notes Includes bibliographical references.
Place Published Research Triangle Park, N.C. Springfield, Va.
Corp Au Ser Add Ent United Sates. Environmental Protection Agency. Publication ; no. EPA-450/2-77-021a.
PUB Date Free Form 1977
Series Title Untraced Publication ; no. EPA-450/2-77-021a
NTIS Prices PC A06/MF A01
BIB Level m
Medium unmediated
Content text
Carrier volume
Cataloging Source OCLC/T
OCLC Time Stamp 20160418155833
Language eng
Origin OCLC
Type CAT
OCLC Rec Leader 01541cam 2200337Ii 45020