Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Determination of Ambient Air Hydrocarbons in 39 U.S. Cities.
Author Seila, R. L. ; Lonneman, W. A. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Year Published 1988
Report Number EPA/600/D-88/138;
Stock Number PB88-225040
Additional Subjects Hydrocarbons ; Gas chromatography ; Urban areas ; Chromatographic analysis ; Air pollution detection ; Environmental samples
Library Call Number Additional Info Location Last
NTIS  PB88-225040 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 12/29/1988
Collation 18p
Compliance with the NAAQS for ozone will require the reduction of non-methane organic carbon (NMOC). To this end speciated hydrocarbons were determined for over 800 ambient air samples from 39 U.S. cities from 1984-1986. Samples were collected in stainless steel spheres on week days from 6 to 9 a.m. during June through September. C2 to C12 hydrocarbons were determined by capillary GC/FID with sample cryogenic preconcentration. The GC retention time identification table consisted of 314 uniquely numbered peaks, of which 97 were specifically named, 214 were identified by type (olefin, paraffin, aromatic). GC-MSD/FID analysis confirmed the identity of 40 peaks and indicated the presence of oxygenated, chlorinated, and fluorinated hydrocarbons in some samples.