Mobility of haloforms on ice surfaces

Grecea, M L and Backus, E H G and Fraser, H J and Pradeep, T and Kleyn, A W and Bonn, M (2004) Mobility of haloforms on ice surfaces. Chemical Physics Letters, 385 (3-4). pp. 244-248. ISSN 0009-2614

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Abstract

We have investigated the mobility of bromoform (CHBr3) and chloroform (CHCl3) on amorphous solid water and crystalline ice surfaces, by monitoring their adsorption and desorption behavior using temperature programmed desorption spectroscopy and reflection absorption infrared spectroscopy. Up to its desorption temperature, of 140 K, CHCl3 does not diffuse over the crystalline ice surface, whereas CHBr3 is found to be mobile at temperatures as low as 85 K. The results demonstrate distinct differences between the surface mobility of structurally similar haloform molecules on crystalline ice surfaces, which may have implications to the halocarbon chemistry occurring on atmospheric ice particles. (C) 2004 Elsevier B.V. All rights reserved.

Author(s):Grecea, M L, Backus, E H G, Fraser, H J, Pradeep, T, Kleyn, A W and Bonn, M
Item type:Article
ID code:34238
Keywords:amorphous solid water, crystalline ice, stratospheric bromine, adsorption, ozone, films, bromoform, spectroscopy, Solid state physics. Nanoscience, Physics and Astronomy(all), Physical and Theoretical Chemistry
Subjects:Science > Physics > Solid state physics. Nanoscience
Department:Faculty of Science > Physics
Depositing user: Pure Administrator
Date deposited:24 Oct 2011 11:13
Last modified:03 Jan 2019 13:05
URI:https://strathprints.strath.ac.uk/id/eprint/34238
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