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Gas-phase Ozone Oxidation of Monoterpenes: Gaseous and Particulate Products

Yu, Jianzhen and Cocker, David R., III and Griffin, Robert J. and Flagan, Richard C. and Seinfeld, John H. (1999) Gas-phase Ozone Oxidation of Monoterpenes: Gaseous and Particulate Products. Journal of Atmospheric Chemistry, 34 (2). pp. 207-258. ISSN 0167-7764. doi:10.1023/A:1006254930583.

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Atmospheric oxidation of monoterpenes contributes to formation of tropospheric ozone and secondary organic aerosol, but their products are poorly characterized. In this work, we report a series of outdoor smog chamber experiments to investigate both gaseous and particulate products in the ozone oxidation of four monoterpenes: α-pinene, β-pinene, Δ^3-carene, and sabinene. More than ten oxygenated products are detected and identified in each monoterpene/O_3 reaction by coupling derivatization techniques and GC/MS detection. A denuder/filter pack sampling system is used to separate and simultaneously collect gas and aerosol samples. The identified products, consisting of compounds containing carbonyl, hydroxyl, and carboxyl functional groups, are estimated to account for about 34–50%, 57%, 29–67%, and 24% of the reacted carbon mass for β-pinene, sabinene, α-pinene, and Δ^3-carene, respectively. The identified individual products account for >83%, ∼100%, >90%, and 61% of the aerosol mass produced in the ozone reaction of β-pinene, sabinene, α-pinene, and Δ^3-carene. The uncertainty in the yield data is estimated to be ∼ ±50%. Many of the products partition between gas and aerosol phases, and their gas-aerosol partitioning coefficients are determined and reported here. Reaction schemes are suggested to account for the products observed.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access
Cocker, David R., III0000-0002-0586-0769
Griffin, Robert J.0000-0001-7682-8769
Flagan, Richard C.0000-0001-5690-770X
Seinfeld, John H.0000-0003-1344-4068
Additional Information:© 1999 Springer. (Received: 24 November 1998; accepted: 27 January 1999) This work was supported by the U.S. Environmental Protection Agency Center on Airborne Organics, the Coordinating Research Council, the Chevron Corporation, and the National Science Foundation (ATM-9614105). Special thanks go to Nathan Whitlock for helping collect samples
Funding AgencyGrant Number
Environmental Protection Agency (EPA)UNSPECIFIED
Coordinating Research CouncilUNSPECIFIED
Chevron CorporationUNSPECIFIED
Subject Keywords:monoterpenes; aerosols; organic aerosols
Issue or Number:2
Record Number:CaltechAUTHORS:20150806-165631636
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59289
Deposited By: Irina Meininger
Deposited On:09 Dec 2015 00:35
Last Modified:12 Apr 2023 21:14

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