Journal article
Apportionment of Primary and Secondary Organic Aerosols in Southern California during the 2005 Study of Organic Aerosols in Riverside (SOAR-1)
Environmental science & technology, Vol.42(20), pp.7655-7662
2008
DOI: 10.1021/es8008166
PMID: 18983089
Abstract
Ambient sampling was conducted in Riverside, California during the 2005 Study of Organic Aerosols in Riverside to characterize the composition and sources of organic aerosol using a variety of state-of-the-art instrumentation and source apportionment techniques. The secondary organic aerosol (SOA) mass is estimated by elemental carbon and carbon monoxide tracer methods, water soluble organic carbon content, chemical mass balance of organic molecular markers, and positive matrix factorization of high-resolution aerosol mass spectrometer data. Estimates obtained from each of these methods indicate that the organic fraction in ambient aerosol is overwhelmingly secondary in nature during a period of several weeks with moderate ozone concentrations and that SOA is the single largest component of PM1 aerosol in Riverside. Average SOA/OA contributions of 70-90% were observed during midday periods, whereas minimum SOA contributions of ∼45% were observed during peak morning traffic periods. These results are contrary to previous estimates of SOA throughout the Los Angeles Basin which reported that, other than during severe photochemical smog episodes, SOA was lower than primary OA. Possible reasons for these differences are discussed. © 2008 American Chemical Society.
Details
- Title: Subtitle
- Apportionment of Primary and Secondary Organic Aerosols in Southern California during the 2005 Study of Organic Aerosols in Riverside (SOAR-1)
- Creators
- Kenneth S Docherty - Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, United StatesElizabeth A Stone - Environmental Chemistry and Technology Program, University of Wisconsin, Madison, Wisconsin, United StatesBrett D Grover - Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah, United StatesDelbert J Eatough - Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah, United StatesJose L Jimenez - Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, United StatesIngrid M Ulbrich - Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, United StatesPeter F Decarlo - Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, United StatesDavid C Snyder - Environmental Chemistry and Technology Program, University of Wisconsin, Madison, Wisconsin, United StatesJames J Schauer - Environmental Chemistry and Technology Program, University of Wisconsin, Madison, Wisconsin, United StatesRichard E Peltier - School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia, United StatesRodney J Weber - School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, Georgia, United StatesShane M Murphy - Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California, United StatesJohn H Seinfeld - Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California, United States
- Resource Type
- Journal article
- Publication Details
- Environmental science & technology, Vol.42(20), pp.7655-7662
- Publisher
- American Chemical Society
- DOI
- 10.1021/es8008166
- PMID
- 18983089
- ISSN
- 0013-936X
- eISSN
- 1520-5851
- Language
- English
- Date published
- 2008
- Academic Unit
- Chemistry; Chemical and Biochemical Engineering
- Record Identifier
- 9984216675702771
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