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Comment on “Semiempirical Model for Organic Aerosol Growth by Acid-Catalyzed Heterogeneous Reactions of Carbonyls”

Barsanti, Kelley C. and Pankow, James F. and Dabdub, Donald and Griffin, Robert J. and Seinfeld, John H. (2005) Comment on “Semiempirical Model for Organic Aerosol Growth by Acid-Catalyzed Heterogeneous Reactions of Carbonyls”. Environmental Science and Technology, 39 (20). pp. 8108-8109. ISSN 0013-936X. doi:10.1021/es0512529. https://resolver.caltech.edu/CaltechAUTHORS:20170315-110055574

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Abstract

Jang et al. (1) report measurements of organic particulate matter (OPM) formed in the presence of acidic seed aerosols using both a flow reactor and a Teflon chamber and examine their data using two modeling approaches. The study is a continuation of work by Jang et al. (2) on whether acidity in atmospheric PM can promote the formation of OPM by “heterogeneous” reaction of a variety of relatively volatile (C5-C10) aldehydes and ketones. Jang et al. (1) state that (a) “no predictivity power was achieved” for their experimental systems when using the absorptive partitioning model of Pankow (3) and (b) “These results suggest that semiempirical approaches can vastly improve our ability to predict the organic aerosol growth of a variety of different carbonyls in the presence of inorganic acid. For equilibrium conditions in the atmosphere this approach can be applied directly.” In our view, (a) Jang et al. (1) misapplied the Pankow (3) model and (b) their proposed “semiempirical model” is inherently a characterization of the kinetics ofOPMformation (see their eqs 5-12) under specific conditions and so is not easily applicable to the prediction of how much OPM will form under other kinetic conditions and certainly not at equilibrium in the atmosphere.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/es0512529DOIArticle
http://pubs.acs.org/doi/abs/10.1021/es0512529PublisherArticle
ORCID:
AuthorORCID
Seinfeld, John H.0000-0003-1344-4068
Additional Information:© 2005 American Chemical Society. Publication Date (Web): September 7, 2005. This work was funded in part by the Electric Power Research Institute.
Funders:
Funding AgencyGrant Number
Electric Power Research Institute (EPRI)UNSPECIFIED
Issue or Number:20
DOI:10.1021/es0512529
Record Number:CaltechAUTHORS:20170315-110055574
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170315-110055574
Official Citation:Comment on “Semiempirical Model for Organic Aerosol Growth by Acid-Catalyzed Heterogeneous Reactions of Carbonyls” Kelley C. Barsanti, James F. Pankow, Donald Dabdub, Robert J. Griffin, and John H. Seinfeld Environmental Science & Technology 2005 39 (20), 8108-8109 DOI: 10.1021/es0512529
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75144
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Mar 2017 17:16
Last Modified:15 Nov 2021 16:31

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