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Molecular Marker Analysis as a Guide to the Sources of Fine Organic Aerosols

Rogge, W. F. and Cass, G. R. and Hildemann, L. M. and Mazurek, M. A. and Simoneit, B. R. T. (1992) Molecular Marker Analysis as a Guide to the Sources of Fine Organic Aerosols. In: Southern California air quality study data analysis conference, July 21-23, 1992, Los Angeles, CA. (Submitted)

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The molecular composition of fine particulate (D_p ≥ 2 µm) organic aerosol emissions from the most important sources in the Los Angeles area has been determined. Likewise, ambient concentration patterns for more than 80 single organic compounds have been measured at four urban sites (West Los Angeles, Downtown Los Angeles, Pasadena, and Rubidoux) and at one remote offshore site (San Nicolas Island). It has been found that cholesterol serves as a marker compound for emissions from charbroilers and other meat cooking operations. Vehicular exhaust being emitted from diesel and gasoline powered engines can be traced in the Los Angeles atmosphere using fossil petroleum marker compounds such as steranes and pentacyclic triterpanes (e.g., hopanes). Biogenic fine particle emission sources such as plant fragments abraded from leaf surfaces by wind and weather can be traced in the urban atmosphere. Using distinct and specific source organic tracers or assemblages of organic compounds characteristic for the sources considered it is possible to estimate the influence of different source types at any urban site where atmospheric data are available.

Item Type:Conference or Workshop Item (Paper)
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Additional Information:© 1992. This research was supported by the California Air Resources Board under agreement A932-127. Portions of the work benefited from research supported by the U.S. Environmental Protection Agency under agreement R-813277-01-0 and by the South Coast Air Quality Management District. Partial funding also was provided by the U.S. Department of Energy under contract DE-AC02-76CH00016. The statements and conclusions in the report are those of the contractor and not necessarily those of the California Air Resources Board. The mention of commercial products, their source or their use in connection with material reported herein is not to be construed as actual or implied endorsement of such products. This manuscript has not been subject to the EPA's peer and policy review, and hence does not necessarily reflect the views of the EPA.
Group:Environmental Quality Laboratory
Funding AgencyGrant Number
California Air Resources BoardA932-127
Environmental Protection Agency (EPA)R-813277-01-0
South Coast Air Quality Management District (SCAQMD)UNSPECIFIED
Department of Energy (DOE)DE-AC02-76CH00016
Record Number:CaltechAUTHORS:20160719-112009610
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69110
Deposited By: Ruth Sustaita
Deposited On:25 Jul 2016 22:41
Last Modified:03 Oct 2019 10:19

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