Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Composition of Aerosols Over Los Angeles Freeways.
Author Dzubay, T. G. ; Stevens, R. K. ; Richards, L. W. ;
CORP Author Environmental Sciences Research Lab., Research Triangle Park, NC. ;Rockwell International, Newbury Park, CA. Air Monitoring Center.
Year Published 1979
Report Number EPA/600/J-79/020;
Stock Number PB-298 517
Additional Subjects Aerosols ; Exhaust emissions ; Highways ; Particles ; Sites ; Concentration(Composition) ; Sampling ; Air pollution ; Sulfates ; Inorganic nitrates ; Optical properties ; California ; Air pollution sampling ; Los Angeles(California) ; Automobile exhaust ; Reprints
Library Call Number Additional Info Location Last
NTIS  PB-298 517 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 9p
In October of 1976, aerosol particulate samples were collected while driving on Los Angeles freeways and were analyzed for sulfate, nitrate, and elemental composition. The measurements indicate that neither nitrate nor sulfate concentrations increased significantly over the roadway. The mean nitrate concentration in the fine particle fraction was 0.2 microgram/cu m and was not above the mean background value. The mean background sulfate concentration was 7.9 microgram/cu m, and the in-roadway sulfate increment was less than 1.5 microgram/cu m. However, the mean in-roadway lead concentration of 10.9 microgram/cu m exceeded the mean background value by a factor of more than 6. The optical attenuation of the collected aerosol deposits was measured: the mean in-roadway value exceeded the background value by a factor of 4. (Copyright (c) Pergamon Press Ltd., 1979.)