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Biological input to visibility-reducing aerosol particles in the remote arid southwestern United States

Mazurek, Monica A. and Cass, Glen R. and Simoneit, Bernd R. T. (1991) Biological input to visibility-reducing aerosol particles in the remote arid southwestern United States. Environmental Science and Technology, 25 (4). pp. 684-694. ISSN 0013-936X. http://resolver.caltech.edu/CaltechAUTHORS:20160713-081441283

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Abstract

Source contributions of contemporary biological material to remote airsheds of the arid southwestern United States are described. Combined inputs of epicuticular plant waxes and airborne microorganisms range from winter minimum (11.3-26.9 ng/m^3) to summer maximum ambient mass concentrations (21.2-41.4 ng/m^3). Concentrations of aromatic resin acids (Le., dehydroabietic acid and 13-isopropyl-5cu-podocarpa-6,8,11,13-tetraen-l6-oic acid) plus a thermally matured wood smoke marker (i.e., retene) range from 1.2 to 9.6 ng/m^3. Minimum levels of the resin acids and wood smoke marker are observed for the sparse desert vegetation site (low elevation), and maximum levels are found for the transition site of ponderosa pine and pinyon/juniper forest (high elevation). The total wood smoke mass contributions were estimated by using the ambient mass concentrations of both the aromatic resin acid and wood smoke tracers. Based on these estimates, combustion of conifer biomass (e.g., natural wildfires, camp fires, home heating) is an important component of the organic emission source inventory for this desert region.


Item Type:Article
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URLURL TypeDescription
http://dx.doi.org/10.1021/es00016a013DOIArticle
http://pubs.acs.org/doi/abs/10.1021/es00016a013PublisherArticle
Additional Information:© 1991 American Chemical Society. Received for review June 15, 1990. Revised manuscript received October 29, 1990. Accepted November 1, 1990. This work was supported by the Electric Power Research Institute via its research contracts with Aerovironment. We thank Peter Mueller of the Electric Power Research Institute and Dennis Fitz of Aerovironment for assistance with this project. Ed Ruth of the UCLA GC/MS Facility provided the mass spectrometry analyses.
Group:Environmental Quality Laboratory
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Electric Power Research Institute (EPRI)UNSPECIFIED
Record Number:CaltechAUTHORS:20160713-081441283
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160713-081441283
Official Citation:Biological input to visibility-reducing aerosol particles in the remote arid southwestern United States Monica A. Mazurek, Glen R. Cass, and Bernd R. T. Simoneit Environmental Science & Technology 1991 25 (4), 684-694 DOI: 10.1021/es00016a013
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:68989
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:26 Jul 2016 20:18
Last Modified:26 Jul 2016 20:18

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