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RECORD NUMBER: 33 OF 200

OLS Field Name OLS Field Data
Main Title Comparison of Hydrocarbon Concentrations for 1981 and 1990 in Atlanta.
Author Seila, R. L. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. National Exposure Research Lab.
Publisher 1995
Year Published 1995
Report Number EPA/600/A-95/125;
Stock Number PB96-116835
Additional Subjects Hydrocarbons ; Air pollution sampling ; Comparative evaluations ; Environmental concentration ; Chemical analysis ; Gas chromatogaphy ; Flame ionization ; Alkanes ; Alkenes ; Formaldehyde ; Acetaldehyde ; Carbon monoxide ; Regional analysis ; Precursors ; Ozone ; Atlanta(Georgia) ; Emissions inventories ; TNMOC(Total Nonmethane Organic Compounds)
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB96-116835 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 02/29/1996
Collation 9p
Abstract
Field studies were conducted during the July-August period of 1981 and 1990 in Atlanta, Georgia. Paraffinic, olefinic, and aromatic volatile hydrocarbon were determined by gas chromatography with flame ionization detection and cryogenic preconcentration. In 1981 samples from three sites were collected in Tedlar bags and stored in canisters, while in 1990 automated gas chromatographs at six sites analyzed air samples directly every hour with no sample storage. Formaldehyde, acetaldehyde, and CO were also measured by other methods in both studies. TNMOC and 30 compounds were available for comparison after method differences and analysis reporting variations were considered. This paper compares TNMOC and individual compound concentrations and concentration ratios from 13 samples in 1981 and 28 samples in 1990 for the 7:00 and 8:00 am period at Georgia Tech, the site common to both studies.