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Molecular speciation of secondary organic aerosol from photooxidation of the higher alkenes: 1-octene and 1-decene

Forstner, Hali J. L. and Flagan, Richard C. and Seinfeld, John H. (1997) Molecular speciation of secondary organic aerosol from photooxidation of the higher alkenes: 1-octene and 1-decene. Atmospheric Environment, 31 (13). pp. 1953-1964. ISSN 1352-2310. doi:10.1016/s1352-2310(96)00356-1.

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Outdoor smog chamber photooxidations to determine the molecular composition of secondary organic aerosol (SOA) from 1-octene and 1-decene in sunlight-irradiated hydrocarbon-NO_x mixtures are reported. The observed products are consistent with the current understanding of alkene reactions with OH and O₃. Gas-phase mechanisms leading to the observed products are outlined. Heptanal, heptanoic acid, and dihydro-5-propyl-2(3H)-furanone were the dominant organics identified in 1-octene aerosol. The corresponding species in 1-decene aerosol were nonanal, nonanoic acid, and dihydro-5-pentyl-2(3H)-furanone. Measured aerosol yields from 1-octene and 1-decene experiments are also reported, and are found to correlate with organic mass concentration according to semi-volatile gas/particle partitioning theory. A new organic aerosol extraction procedure utilizing supercritical CO₂ extraction is outlined.

Item Type:Article
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URLURL TypeDescription
Flagan, Richard C.0000-0001-5690-770X
Seinfeld, John H.0000-0003-1344-4068
Additional Information:This work was supported by US Environmental Protection Agency Exploratory Environmental Research Center on Airborne Organics (R-819714-01-0) and National Science Foundation grant ATM-9307603.
Funding AgencyGrant Number
Environmental Protection Agency (EPA)R-819714-01-0
Issue or Number:13
Record Number:CaltechAUTHORS:20230222-980742900.7
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:119468
Deposited By: Tony Diaz
Deposited On:22 Feb 2023 23:22
Last Modified:22 Feb 2023 23:22

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