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Photochemical aerosol formation from α-pinene- and β-pinene

Zhang, Shou-Hua and Shaw, Martha and Seinfeld, John H. and Flagan, Richard C. (1992) Photochemical aerosol formation from α-pinene- and β-pinene. Journal of Geophysical Research. Atmospheres, 97 (D18). pp. 20717-20729. ISSN 2169-897X. https://resolver.caltech.edu/CaltechAUTHORS:20141028-091812090

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Abstract

Aerosol formation from α-pinene and β-pinene was studied in a series of outdoor smog chamber experiments. Since a previous study focused on β-pinene (Pandis et al., 1991), more attention was given here to α-pinene. The initial hydrocarbon and NO_x concentrations ranged from 37 to 582 ppb and 31 to 380 ppb, respectively. The aerosol carbon yield, the fraction of the carbon initially present that is converted to aerosol, varied from 0 to 5.3% for α-pinene, depending on the initial hydrocarbon-to-NO_x ratio. Dual-bag experiments demonstrate that α-pinene is more rapidly photooxidized, and produces higher yields of both aerosol and ozone in a given period of time than β-pinene, although given sufficient time β-pinene can produce equivalent aerosol yields. Although aerosol formation solely from isoprene photooxidation was found in a previous study to be negligible under ambient conditions, the addition of isoprene to the α-pinene/NO_x system leads to an increased aerosol yield through the enhanced photochemical activity generated.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/92JD02156DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/92JD02156/abstractPublisherArticle
ORCID:
AuthorORCID
Seinfeld, John H.0000-0003-1344-4068
Flagan, Richard C.0000-0001-5690-770X
Additional Information:© 1992 American Geophysical Union. Received June 1, 1992; revised August 21, 1992; accepted September 1, 1992. This work was supported by the Coordinating Research Council, project AQ-3-2, and National Science Foundation grant ATM-9003186.
Funders:
Funding AgencyGrant Number
Coordinating Research CouncilAQ-3-2
NSFATM-9003186
Issue or Number:D18
Record Number:CaltechAUTHORS:20141028-091812090
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141028-091812090
Official Citation:Zhang, S.-H., M. Shaw, J. H. Seinfeld, and R. C. Flagan (1992), Photochemical aerosol formation from α-pinene- and β-pinene, J. Geophys. Res., 97(D18), 20717–20729, doi:10.1029/92JD02156.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50915
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:28 Oct 2014 19:14
Last Modified:03 Oct 2019 07:28

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