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Mass spectrometry of interfacial layers during fast aqueous aerosol/ozone gas reactions of atmospheric interest

Enami, S. and Vecitis, C. D. and Cheng, J. and Hoffmann, M. R. and Colussi, A. J. (2008) Mass spectrometry of interfacial layers during fast aqueous aerosol/ozone gas reactions of atmospheric interest. Chemical Physics Letters, 455 (4-6). pp. 316-320. ISSN 0009-2614. https://resolver.caltech.edu/CaltechAUTHORS:20150623-154751358

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Abstract

The oxidations of sulfite and iodide in the interfacial layers of aqueous microdroplets exposed to O_3(g) for 1 ms are investigated by online mass spectrometry of the electrostatically ejected anions. S(IV) oxidation losses in Na_2SO_3 microdroplets are proportional to [S(IV)] [O_3(g)] up to ∼90% conversion. I^− is more abundant than HSO_3^- in the interfacial layers of equimolar (Na_2SO_3 + NaI) microdroplets and ∼3 times more reactive than image toward O_3(aq) in bulk solution, but it is converted with minimal loss to I_3^- and IO_3^- plus a persistent ISO_3^- intermediate. These observations reveal unanticipated interfacial gradients, reactivity patterns and transport phenomena that had not been taken into account in previous treatments of fast gas–liquid reactions.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.cplett.2008.02.075DOIArticle
http://www.sciencedirect.com/science/article/pii/S0009261408002753PublisherArticle
ORCID:
AuthorORCID
Enami, S.0000-0002-2790-7361
Hoffmann, M. R.0000-0001-6495-1946
Colussi, A. J.0000-0002-3400-4101
Additional Information:© 2008 Elsevier B.V. Received 30 October 2007; in final form 20 February 2008; Available online 4 March 2008. This project was supported by the National Science Foundation (ATM-0714329). S.E. is grateful to Prof. Yutaka Matsumi (Solar-Terrestrial Environment Laboratory, Nagoya University), Prof. Masahiro Kawasaki (Department of Molecular Engineering, Kyoto University) and the JSPS Research Fellowship for Young Scientists.
Funders:
Funding AgencyGrant Number
NSFATM-0714329
Japan Society for the Promotion of Science (JSPS)UNSPECIFIED
Issue or Number:4-6
Record Number:CaltechAUTHORS:20150623-154751358
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150623-154751358
Official Citation:S. Enami, C.D. Vecitis, J. Cheng, M.R. Hoffmann, A.J. Colussi, Mass spectrometry of interfacial layers during fast aqueous aerosol/ozone gas reactions of atmospheric interest, Chemical Physics Letters, Volume 455, Issues 4–6, 10 April 2008, Pages 316-320, ISSN 0009-2614, http://dx.doi.org/10.1016/j.cplett.2008.02.075. (http://www.sciencedirect.com/science/article/pii/S0009261408002753)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58462
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:29 Jul 2015 21:37
Last Modified:03 Mar 2020 13:01

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