A Caltech Library Service

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. doi:10.1029/2000GL011701.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


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
Hoffmann, Michael R.0000-0001-6495-1946
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.
Funding AgencyGrant Number
Environmental Now FoundationUNSPECIFIED
Issue or Number:20
Record Number:CaltechAUTHORS:20150812-113743401
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59446
Deposited By: Ruth Sustaita
Deposited On:12 Aug 2015 22:44
Last Modified:10 Nov 2021 22:20

Repository Staff Only: item control page