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. doi:10.1016/j.cplett.2008.02.075. 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.
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| 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. | |||||||||
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| Issue or Number: | 4-6 | |||||||||
| DOI: | 10.1016/j.cplett.2008.02.075 | |||||||||
| 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: | 10 Nov 2021 22:05 |
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