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RECORD NUMBER: 26 OF 28

Main Title Fate of halogenated compounds in the atmosphere : interim report - 1977 /
Author Singh, Hanwant B.; Salas, L. J.; Shiegeishi, H.; Smith., A. H.
CORP Author Stanford Research Inst., Menlo Park, Calif.;Environmental Sciences Research Lab., Research Triangle Park, N.C.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Place Published Research Triangle Park, NC
Year Published 1978
Report Number EPA-600/3-78-017; PB278198; EPA-R-8038020-2
Stock Number PB-278 198
OCLC Number 52451951
Subjects Halogen organic compounds; Air pollution; Gas analysis; Atmospheric composition; Chemical analysis; Troposphere; Concentration(Composition); Chlorine organic compounds; Fluorine organic compounds; Trace elements; Forecasting; Path of pollutants; Air pollution detection; Hydroxyl radicals
Subject Added Ent Halohydrocarbons.; Atmospheric chemistry.; Troposphere.
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=9101A9SB.txt
Holdings
Library   Call Number Additional Info Location Date Modified
EJAD EPA 600/3-78-017 Region 3 Library/Philadelphia, PA 06/20/2003
EJBD ARCHIVE EPA 600-3-78-017 Headquarters Library/Washington,DC 09/12/2011
EJBD EPA 600-3-78-017 c.1 Headquarters Library/Washington,DC 02/03/2014
EKBD EPA-600/3-78-017 Research Triangle Park Library/RTP, NC 07/18/2003
EOAD EPA 600/3-78-017 Region 8 Technical Library/Denver,CO 02/28/2011
ESAD EPA 600-3-78-017 Region 10 Library/Seattle,WA 03/23/2010
NTIS PB-278 198 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 57 p. : ill. ; 28 cm.
Abstract The second year results involved air monitoring at five urban and nonurban stations with the help of an instrumented environmental mobile laboratory. The monitoring stations included urban, remote marine, remote continental, high altitude and intermediate locations. In situ analysis was performed for a total of 31 chemical species and six meteorological parameters. Of the 31 chemical species sought, 19 were halogenated compounds, five were nitrogen containing species, and the remaining seven included hydrocarbons, CO, and O3. Data suggest that the troposphere (northern hemisphere) contains 2906 ppt of chlorine atoms. The chlorine contribution of fluorocarbons is 33% of the total while that due exclusively to chlorocarbons is 77%. The natural chlorine contribution due solely to CH3Cl is 25% of the total organic chlorine burden. The burden of halocarbons in the troposphere is increasing when compared to background data collected exactly a year ago. Based on the budget and distribution of methyl chloroform and its emissions inventory, a two-box model was used to develop the conclusion that average tropospheric hydroxyl radical (OH) concentration was about 400,000 HO/ml. This is significantly lower than the hitherto accepted OH concentrations in the troposphere. It was further found that there may be significant gradients in the northern and southern hemispheric HO concentrations.
Notes "EPA-600/3-78-017." "January 1978." "Project Officer: John Spence." "Environmental Monitoring and Support Laboratory"--Cover. PB 278 198--NTIS. Includes bibliographical references (p. 54-55).
Access Notes Also available via the World Wide Web
Author Added Ent
Singh, H. B.;
Spence, John.
Corporate Au Added Ent United States. Environmental Protection Agency. Office of Research and Development.; Environmental Sciences Research Laboratory.; Environmental Monitoring and Support Laboratory (Research Triangle Institute)
Title Ser Add Ent Environmental monitoring series.
PUB Date Free Form 1978
Series Title Traced Environmental monitoring series
Series Title Untraced Environmental monitoring series
NTIS Prices PC A04/MF A01
BIB Level m
OCLC Time Stamp 20140129150904
Cataloging Source OCLC/T
Language eng
Origin OCLC
Type MERGE
OCLC Rec Leader 01638cam 2200409Ka 45020


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