Record Display for the EPA National Library Catalog


Main Title Analysis of the composition of the atmosphere in the Los Angeles basin /
Author Ehrenfeld, John Roos.
CORP Author Abcor, Inc., Cambridge, Mass. Walden Research Div.;National Environmental Research Center, Research Triangle Park, N.C. Chemistry and Physics Lab.
Publisher U.S. Environmental Protection Agency, National Environmental Research Center, Chemistry and Physics Laboratory,
Year Published 1974
Report Number EPA/650/2-74/105
Stock Number PB-239 466
OCLC Number 39177365
Subjects Air--Pollution--California--Los Angeles region ; Atmosphere--Analysis ; Air--California--Los Angeles region--Pollution ; Atmosphere--California--Los Angeles region--Analysis
Additional Subjects Air pollution ; Smog ; Concentration(Composition) ; Exhaust gases ; Sources ; Hydrocarbons ; Evaporation ; Natural gas ; California ; Seepage ; Mathematical models ; Ethylene ; Propylene ; Regression analysis ; Los Angeles(California)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 650/2-74/105 Headquarters Library/Washington,DC 12/03/2004
EKBD  EPA-650/2-74-105 Research Triangle Park Library/RTP, NC 08/03/2007
ELBD ARCHIVE EPA-650-2-74-105 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ERAD  EPA 650/2-74/105 Region 9 Library/San Francisco,CA 03/18/2013
NTIS  PB-239 466 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ii, 75 pages ; 28 cm.
A material balance model and an inversion technique was developed that appear to produce reasonable estimates of the contribution of different emission sources in the Los Angeles atmosphere. Different sources exhibit very characteristic diurnal and daily patterns. The automobile exhaust contribution to the hydrocarbon burden on weekdays was found to be different from that on weekends. Estimates of the loss of reactive compounds such as ethylene and propylene were made and these compare favorably with smog chamber data.
"EPA-650/2-74/105." EPA contract no. 68-02-0218, program element no. A11008; EPA project officer J.J. Bufalini. Includes bibliographical references (p. 73-75).