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Mathematical model for gas-particle partitioning of secondary organic aerosols

Bowman, Frank M. and Odum, Jay R. and Seinfeld, John H. and Pandis, Spyros N. (1997) Mathematical model for gas-particle partitioning of secondary organic aerosols. Atmospheric Environment, 31 (23). pp. 3921-3931. ISSN 1352-2310. doi:10.1016/s1352-2310(97)00245-8.

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A dynamic model is developed for gas-particle absorptive partitioning of semi-volatile organic aerosols. The model is applied to simulate a pair of m-xylene/NOₓ outdoor smog chamber experiments. In the presence of an inorganic seed aerosol a threshold for aerosol formation is predicted. An examination of characteristic times suggests conditions where an assumption of instantaneous gas-particle equilibrium is justified. Semi-volatile products that are second-generation, rather than first-generation, products of a parent hydrocarbon cause a delay in aerosol formation due to the delayed rate at which the second-generation products are formed. The gas-particle accommodation coefficient is the principal transport parameter and is estimated to have a value between 1.0 and 0.1 for the m-xylene aerosol.

Item Type:Article
Related URLs:
URLURL TypeDescription
Seinfeld, John H.0000-0003-1344-4068
Pandis, Spyros N.0000-0001-8085-9795
Additional Information:This work was supported, in part, by U.S. Environmental Protection Agency Center on Airborne Organics (R-819714-01-0), by National Science Foundation grant ATM-9307603, by the Coordinating Research Council (A-5-1), and by the Chevron Corporation. Spyros Pandis acknowledges support from EPA Grant R-823514-01-0. The authors would also like to thank Hali Forstner for insight regarding conditions necessary for nucleation.
Funding AgencyGrant Number
Environmental Protection Agency (EPA)R-819714-01-0
Coordinating Research CouncilA-5-1
Chevron CorporationUNSPECIFIED
Environmental Protection Agency (EPA)R-823514-01-0
Issue or Number:23
Record Number:CaltechAUTHORS:20230222-242167600.4
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:119463
Deposited By: Tony Diaz
Deposited On:22 Feb 2023 19:55
Last Modified:22 Feb 2023 19:55

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