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Kinetics of submicron oleic acid aerosols with ozone: A novel aerosol mass spectrometric technique

Morris, J. W. and Davidovits, P. and Jayne, J. T. and Jimenez, J. L. and Shi, Q. and Kolb, C. E. and Worsnop, D. R. and Barney, W. S. and Cass, G. (2002) Kinetics of submicron oleic acid aerosols with ozone: A novel aerosol mass spectrometric technique. Geophysical Research Letters, 29 (9). Art. No. 1357. ISSN 0094-8276. doi:10.1029/2002GL014692.

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The reaction kinetics of submicron oleic (9-octadecanoic (Z)-) acid aerosols with ozone was studied using a novel aerosol mass spectrometric technique. In the apparatus a flow of size-selected aerosols is introduced into a flow reactor where the particles are exposed to a known density of ozone for a controlled period of time. The aerosol flow is then directed into an aerosol mass spectrometer for particle size and composition analyses. Data from these studies were used to: (a) quantitatively model the size-dependent kinetics process, (b) determine the aerosol size change due to uptake of ozone, (c) assess reaction stoichiometry, and (d) obtain qualitative information about the volatility of the reaction products. The reactive uptake probability for ozone on oleic acid particles obtained from modeling is 1.6 (±0.2) × 10^(−3) with an upper limit for the reacto-diffusive length of ∼10 nm. Atmospheric implications of the results are discussed.

Item Type:Article
Related URLs:
URLURL TypeDescription
Jimenez, J. L.0000-0001-6203-1847
Worsnop, D. R.0000-0002-8928-8017
Additional Information:Copyright 2002 by the American Geophysical Union. Received 8 January 2002; revised 15 February 2002; accepted 15 February 2002; published 15 May 2002. Funding was provided by NSF Grant Nos. ATM-99-05551 and CH-0089147, by DOE Grant No. DE-FG02-98ER62581, and by the U.S.-Israel Binational Science Foundation Grant No. 1999134.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-98ER62581
Binational Science Foundation (USA-Israel)1999134
Issue or Number:9
Classification Code:0365 Atmospheric Composition and Structure: Troposphere—composition and chemistry; 0317 Atmospheric Composition and Structure: Chemical kinetic and photochemical properties; 0345 Atmospheric Composition and Structure: Pollution—urban and regional (0305)
Record Number:CaltechAUTHORS:20141027-124050040
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Official Citation:Morris, J. W., P. Davidovits, J. T. Jayne, J. L. Jimenez, Q. Shi, C. E. Kolb, D. R. Worsnop, W. S. Barne, and G. Cass, Kinetics of submicron oleic acid aerosols with ozone: A novel aerosol mass spectrometric technique, Geophys. Res. Lett., 29(9), doi:10.1029/2002GL014692, 2002.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50859
Deposited By: George Porter
Deposited On:27 Oct 2014 20:30
Last Modified:10 Nov 2021 19:01

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