Abstract
This article describes a chemical characterization approach for complex organic compound mixtures associated with fine atmospheric particles of diameters less than 2.5 m (PM2.5). It relates molecular- and bulk-level chemical characteristics of the complex mixture to atmospheric chemistry and to emission sources. Overall, the analytical approach describes the organic complex mixtures in terms of a chemical mass balance (CMB). Here, the complex mixture is related to a bulk elemental measurement (total carbon) and is broken down systematically into functional groups and molecular compositions. The CMB and molecular-level information can be used to understand the sources of the atmospheric fine particles through conversion of chromatographic data and by incorporation into receptor-based CMB models. Once described and quantified within a mass balance framework, the chemical profiles for aerosol organic matter can be applied to existing air quality issues. Examples include understanding health effects of PM2.5 and defining and controlling key sources of anthropogenic fine particles. Overall, the organic aerosol compositional data provide chemical information needed for effective PM2.5 management.
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Selected References
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- Bhave P. V., Fergenson D. P., Prather K. A., Cass G. R. Source apportionment of fine particulate matter by clustering single-particle data: tests of receptor model accuracy. Environ Sci Technol. 2001 May 15;35(10):2060–2072. doi: 10.1021/es0017413. [DOI] [PubMed] [Google Scholar]
- Christoforou C. S., Salmon L. G., Hannigan M. P., Solomon P. A., Cass G. R. Trends in fine particle concentration and chemical composition in southern California. J Air Waste Manag Assoc. 2000 Jan;50(1):43–53. doi: 10.1080/10473289.2000.10463985. [DOI] [PubMed] [Google Scholar]
- Chung A., Herner J. D., Kleeman M. J. Detection of alkaline ultrafine atmospheric particles at Bakersfield, California. Environ Sci Technol. 2001 Jun 1;35(11):2184–2190. doi: 10.1021/es001879l. [DOI] [PubMed] [Google Scholar]
- Nolte C. G., Schauer J. J., Cass G. R., Simoneit B. R. Highly polar organic compounds present in wood smoke and in the ambient atmosphere. Environ Sci Technol. 2001 May 15;35(10):1912–1919. doi: 10.1021/es001420r. [DOI] [PubMed] [Google Scholar]
- doi: 10.1098/rspb.1999.0819. [DOI] [PMC free article] [Google Scholar]
- Schauer J. J., Kleeman M. J., Cass G. R., Simoneit B. R. Measurement of emissions from air pollution sources. 3. C1-C29 organic compounds from fireplace combustion of wood. Environ Sci Technol. 2001 May 1;35(9):1716–1728. doi: 10.1021/es001331e. [DOI] [PubMed] [Google Scholar]
- Sisler J. F., Malm W. C. Interpretation of trends of PM2.5 and reconstructed visibility from the IMPROVE network. J Air Waste Manag Assoc. 2000 May;50(5):775–789. doi: 10.1080/10473289.2000.10464127. [DOI] [PubMed] [Google Scholar]
- Watson J. G., Chow J. C., Bowen J. L., Lowenthal D. H., Hering S., Ouchida P., Oslund W. Air quality measurements from the Fresno Supersite. J Air Waste Manag Assoc. 2000 Aug;50(8):1321–1334. doi: 10.1080/10473289.2000.10464184. [DOI] [PubMed] [Google Scholar]
- Watson J. G., Chow J. C., Houck J. E. PM2.5 chemical source profiles for vehicle exhaust, vegetative burning, geological material, and coal burning in Northwestern Colorado during 1995. Chemosphere. 2001 Jun;43(8):1141–1151. doi: 10.1016/s0045-6535(00)00171-5. [DOI] [PubMed] [Google Scholar]