Hayase, Sayaka and Yabushita, Akihiro and Kawasaki, Masahiro and Enami, Shinichi and Hoffmann, Michael R. and Colussi, Agustín J. (2010) Heterogeneous Reaction of Gaseous Ozone with Aqueous Iodide in the Presence of Aqueous Organic Species. Journal of Physical Chemistry A, 114 (19). pp. 6016-6021. ISSN 1089-5639. https://resolver.caltech.edu/CaltechAUTHORS:20100604-143110766
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Abstract
The fast reaction of gaseous ozone, O_3(g), with aqueous iodide, I−(aq), was found to be affected by environmentally relevant cosolutes in experiments using cavity ring-down spectroscopy (CRDS) and electrospray ionization mass spectrometry (ESIMS) for the detection of gaseous and interfacial products, respectively. Iodine, I_2(g), and iodine monoxide radical, IO(g), product yields were suppressed in the presence of a few millimolar phenol (pK_a = 10.0), p-methoxyphenol (10.2), or p-cresol (10.3) at pH ≥ 3 but unaffected by salicylic acid (pK_(a2) = 13.6), tert-butanol, n-butanol, or malonic acid. We infer that reactive anionic phenolates inhibit I_2(g) and IO(g) emissions by competing with I−(aq) for O_3(g) at the air/water interface. ESIMS product analysis supports this mechanism. Atmospheric implications are discussed
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| Additional Information: | © 2010 American Chemical Society. Received: March 4, 2010; Revised Manuscript Received: April 9, 2010. Publication Date (Web): April 26, 2010. This project was financially supported by the Grant-in-Aid from JSPS (no. 20245005) and National Science Foundation (ATM-0714329). S.E. thanks the Japan Society for the Promotion of Sciences Postdoctoral Fellowships for Research Abroad. | |||||||||
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| Issue or Number: | 19 | |||||||||
| Record Number: | CaltechAUTHORS:20100604-143110766 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20100604-143110766 | |||||||||
| Official Citation: | Heterogeneous Reaction of Gaseous Ozone with Aqueous Iodide in the Presence of Aqueous Organic Species Sayaka Hayase, Akihiro Yabushita, Masahiro Kawasaki, Shinichi Enami, Michael R. Hoffmann, Agustn J. Colussi The Journal of Physical Chemistry A 2010 114 (19), 6016-6021 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 18569 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 04 Jun 2010 21:55 | |||||||||
| Last Modified: | 03 Mar 2020 13:01 |
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