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  Adsorption isotherms for hydrogen chloride (HCl) on ice surfaces between 190 and 220 K

Zimmermann, S., Kippenberger, M., Schuster, G., & Crowley, J. N. (2016). Adsorption isotherms for hydrogen chloride (HCl) on ice surfaces between 190 and 220 K. Physical Chemistry Chemical Physics, 18(20), 13799-13810. doi:10.1039/c6cp01962e.

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 Creators:
Zimmermann, S.1, Author              
Kippenberger, M.1, Author              
Schuster, G.1, Author              
Crowley, J. N.1, Author              
Affiliations:
1Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826285              

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 Abstract: The interaction of hydrogen chloride (HCl) with ice surfaces at temperatures between 190 and 220 K was investigated using a coated-wall flow-tube connected to a chemical ionization mass spectrometer. Equilibrium surface coverages of HCl were determined at gas phase concentrations as low as 2 x 10(9) molecules cm(-3) (similar to 4 x 10(-8) Torr at 200 K) to derive Langmuir adsorption isotherms. The data are described by a temperature independent partition coefficient: K-Lang = (3.7 + 0.2) x 10(-11) cm(3) molecule(-1) with a saturation surface coverage N-max = (2.0 +/- 0.2) x 10(14) molecules cm(-2). The lack of a systematic dependence of K-Lang on temperature contrasts the behaviour of numerous trace gases which adsorb onto ice via hydrogen bonding and is most likely related to the ionization of HCl at the surface. The results are compared to previous laboratory studies, and the equilibrium partitioning of HCl to ice surfaces under conditions relevant to the atmosphere is evaluated.

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Language(s): eng - English
 Dates: 2016
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000377042400009
DOI: 10.1039/c6cp01962e
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Title: Physical Chemistry Chemical Physics
  Abbreviation : Phys. Chem. Chem. Phys.
Source Genre: Journal
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Publ. Info: Cambridge, England : Royal Society of Chemistry
Pages: - Volume / Issue: 18 (20) Sequence Number: - Start / End Page: 13799 - 13810 Identifier: ISSN: 1463-9076
CoNE: https://pure.mpg.de/cone/journals/resource/954925272413_1