Mobility of haloforms on ice surfaces

M L  Grecea; E H G  Backus; H J  Fraser; T  Pradeep; A W  Kleyn; M  Bonn

doi:10.1016/j.cplett.2003.12.085

Mobility of haloforms on ice surfaces

M L Grecea, E H G Backus, H J Fraser, T Pradeep, A W Kleyn, M Bonn

Physics

Research output: Contribution to journal › Article

18 Citations (Scopus)

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.

Original language	English
Pages (from-to)	244-248
Number of pages	5
Journal	Chemical Physics Letters
Volume	385
Issue number	3-4
DOIs	https://doi.org/10.1016/j.cplett.2003.12.085
Publication status	Published - 9 Feb 2004

Keywords

amorphous solid water
crystalline ice
stratospheric bromine
adsorption
ozone
films
bromoform
spectroscopy

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title = "Mobility of haloforms on ice surfaces",

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.",

keywords = "amorphous solid water, crystalline ice, stratospheric bromine, adsorption, ozone, films, bromoform, spectroscopy",

author = "Grecea, {M L} and Backus, {E H G} and Fraser, {H J} and T Pradeep and Kleyn, {A W} and M Bonn",

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language = "English",

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journal = "Chemical Physics Letters",

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TY - JOUR

T1 - Mobility of haloforms on ice surfaces

AU - Grecea, M L

AU - Backus, E H G

AU - Fraser, H J

AU - Pradeep, T

AU - Kleyn, A W

AU - Bonn, M

PY - 2004/2/9

Y1 - 2004/2/9

N2 - 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.

AB - 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.

KW - amorphous solid water

KW - crystalline ice

KW - stratospheric bromine

KW - adsorption

KW - ozone

KW - films

KW - bromoform

KW - spectroscopy

U2 - 10.1016/j.cplett.2003.12.085

DO - 10.1016/j.cplett.2003.12.085

M3 - Article

VL - 385

SP - 244

EP - 248

JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

IS - 3-4

ER -