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Photochemical transformations in ice: Implications for the fate of chemical species

Dubowski, Yael and Hoffmann, Michael R. (2000) Photochemical transformations in ice: Implications for the fate of chemical species. Geophysical Research Letters, 27 (20). pp. 3321-3324. ISSN 0094-8276. http://resolver.caltech.edu/CaltechAUTHORS:20150812-113743401

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Abstract

A quantum yield of ϕ_(ice) = 2.3 × 10^(−4) (±4 × 10^(−5)) was determined for the photochemical degradation of 4-nitrophenol over the wavelength range of 300 to 370 nm in ice pellets (pH 5.6). Five reaction products were identified: hydroquinone, benzoquinone, 4-nitrosophenol, nitrate, nitrite, and the likely formation of organic polymers. The similarities of these results to the observations from 4-nitrophenol photolysis in aqueous solutions indicate that similar mechanisms are operative in both phases. The photochemical decomposition of 4-nitrophenol under conditions similar to those in polar snow and ice suggests that other direct and indirect photochemical process can occur in the polar ice/snow during spring and summer.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/2000GL011701DOIArticle
http://onlinelibrary.wiley.com/wol1/doi/10.1029/2000GL011701/abstractPublisherArticle
ORCID:
AuthorORCID
Hoffmann, Michael R.0000-0002-0432-6564
Additional Information:© 2000 American Geophysical Union. Received April 19, 2000; revised August 23, 2000; accepted August 25, 2000. This research has been supported in part by the NSF and by the Environmental Now Foundation.
Funders:
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NSFUNSPECIFIED
Environmental Now FoundationUNSPECIFIED
Record Number:CaltechAUTHORS:20150812-113743401
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150812-113743401
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59446
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:12 Aug 2015 22:44
Last Modified:12 Aug 2015 22:44

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