Cappa, C. D. and Zhang, X. and Loza, C. L. and Craven, J. S. and Lee, Y. D. and Seinfeld, J. H. (2013) Application of the Statistical Oxidation Model (SOM) to Secondary Organic Aerosol formation from photooxidation of C_(12) alkanes. Atmospheric Chemistry and Physics, 13 (3). pp. 1591-1606. ISSN 1680-7316. doi:10.5194/acp-13-1591-2013. https://resolver.caltech.edu/CaltechAUTHORS:20130409-092032721
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Abstract
Laboratory chamber experiments are the main source of data on the mechanism of oxidation and the secondary organic aerosol (SOA) forming potential of volatile organic compounds. Traditional methods of representing the SOA formation potential of an organic do not fully capture the dynamic, multi-generational nature of the SOA formation process. We apply the Statistical Oxidation Model (SOM) of Cappa and Wilson (2012) to model the formation of SOA from the formation of the four C_(12) alkanes, dodecane, 2- methyl undecane, cyclododecane and hexylcyclohexane, under both high- and low-NO_x conditions, based upon data from the Caltech chambers. In the SOM, the evolution of reaction products is defined by the number of carbon (NC) and oxygen (N_O) atoms, and the model parameters are (1) the number of oxygen atoms added per reaction, (2) the decrease in volatility upon addition of an oxygen atom and (3) the probability that a given reaction leads to fragmentation of the molecules. Optimal fitting of the model to chamber data is carried out using the measured SOA mass concentration and the aerosol O:C atomic ratio. The use of the kinetic, multi-generational SOM is shown to provide insights into the SOA formation process and to offer promise for application to the extensive library of existing SOA chamber experiments that is available.
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| Additional Information: | © 2013 Author(s). This work is distributed under the Creative Commons Attribution 3.0 License. Published by Copernicus Publications on behalf of the European Geosciences Union. Received: 14 September 2012 – Published in Atmos. Chem. Phys. Discuss.: 15 October 2012; Revised: 23 January 2013 – Accepted: 25 January 2013 – Published: 8 February 2013. This work was supported by the National Science Foundation (ATM-1151062) and the Department of Energy (DE-SC0006626). | |||||||||
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| Issue or Number: | 3 | |||||||||
| DOI: | 10.5194/acp-13-1591-2013 | |||||||||
| Record Number: | CaltechAUTHORS:20130409-092032721 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130409-092032721 | |||||||||
| Official Citation: | Cappa, C. D., Zhang, X., Loza, C. L., Craven, J. S., Yee, L. D., and Seinfeld, J. H.: Application of the Statistical Oxidation Model (SOM) to Secondary Organic Aerosol formation from photooxidation of C12 alkanes, Atmos. Chem. Phys., 13, 1591-1606, doi:10.5194/acp-13-1591-2013, 2013 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 37818 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | INVALID USER | |||||||||
| Deposited On: | 09 Apr 2013 16:52 | |||||||||
| Last Modified: | 09 Nov 2021 23:31 |
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