Record Display for the EPA National Library Catalog

RECORD NUMBER: 168 OF 270

Main Title June-September, 6-9 AM, Ambient Air Benzene Concentrations in 39 U.S. Cities, 1984-1986.
Author Seila, R. L. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1987
Report Number EPA/600/D-87/160;
Stock Number PB87-191532
Additional Subjects Air pollution ; Benzene ; Concentration(Composition) ; Urban areas ; Contaminants ; Air quality ; Air sampling
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB87-191532 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
Abstract
Ambient air samples from 44 sites in 39 U.S. urban areas were collected in electropolished, stainless steel canisters on week days from 6 to 9 am during June through September of 1984, 1985, and 1986. Not all sites were sampled all years. Samples were analyzed by capillary gas chromatography with flame ionization detection to determine C2 to C12 volatile hydrocarbon composition. Benzene, which is carcinogenic and present in automobile exhaust and gasoline, was present in every sample. Individual sample concentrations ranged from 1.0 parts-per-billion as carbon (ppbC) to 273 ppbC. The benzene median concentrations by site and year ranged from 4.8 ppbC to 35.0 ppbC with the overall median being 12.6 ppbC.