title: Biogenic Fraction of Ambient VOC: Comparison of Radiocarbon, Chromatographic, and Emissions Inventory Estimates for Atlanta, Georgia.
abstract: Previously reported volatile organic compounds (VOC) radiocarbon (14C) measurements for 1992 summertime Atlanta, GA, have been compared with chromatographic data and emissions inventory predictions. The chromatographic approach that was used provided a more comprehensive VOC characterization than typically achieved, and the emissions inventory was research-grade level (date-, site-, and time-specific). The comparisons are in general agreement that biogenic emissions contribute only modestly (<10%) to the VOC content of the particular ambient samples that were collected and measured. The choices of sampling site (near city-center) and times (early morning and late evening) are major influences on the results, which consequently should not be regarded as representing the average VOC biogenic impact for the Atlanta area.
authors.affiliation: a National Exposure Research Laboratory, U.S. Environmental Protection Agency , Research Triangle Park , North Carolina , USA.
authors.forename: Charles W
authors.initials: CW
authors.lastname: Lewis
authors.affiliation: a National Exposure Research Laboratory, U.S. Environmental Protection Agency , Research Triangle Park , North Carolina , USA.|b Florida Department of Environmental Protection , Tallahassee , Florida , USA.
authors.forename: Robert K
authors.initials: RK
authors.lastname: Stevens
authors.affiliation: c Oregon Graduate Institute of Science and Technology , Portland , Oregon , USA.
authors.forename: Reinhold A
authors.initials: RA
authors.lastname: Rasmussen
authors.affiliation: d School of Earth and Atmospheric Sciences, Georgia Institute of Technology , Atlanta , Georgia , USA.
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Cardelino
authors.affiliation: e Air Resources Laboratory, National Oceanic and Atmospheric Administration (MD-80) , Research Triangle Park , North Carolina , USA.
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Pierce