Articles | Volume 18, issue 9
https://doi.org/10.5194/acp-18-6625-2018
https://doi.org/10.5194/acp-18-6625-2018
Research article
 | 
09 May 2018
Research article |  | 09 May 2018

Mass spectrometric measurement of hydrogen isotope fractionation for the reactions of chloromethane with OH and Cl

Frank Keppler, Enno Bahlmann, Markus Greule, Heinz Friedrich Schöler, Julian Wittmer, and Cornelius Zetzsch

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Cited articles

Bleicher, S., Buxmann, J. C., Sander, R., Riedel, T. P., Thornton, J. A., Platt, U., and Zetzsch, C.: The influence of nitrogen oxides on the activation of bromide and chloride in salt aerosol, Atmos. Chem. Phys. Discuss., 14, 10135–10166, https://doi.org/10.5194/acpd-14-10135-2014, 2014. 
Brenninkmeijer, C. A. M., Janssen, C., Kaiser, J., Röckmann, T., Rhee, T. S., and Assonov, S. S.: Isotope Effects in the Chemistry of Atmospheric Trace Compounds, Chem. Rev., 103, 5125–5162, https://doi.org/10.1021/cr020644k, 2003. 
Carpenter, L. J., Reimann, S., Burkholder, J. B., Clerbaux, C., Hall, B., Hossaini, R., Laube, J., and Yvon-Lewis, S.: Chapter 1: Update on Ozone-Depleting Substances (ODSs) and Other Gases of Interest to the Montreal Protocol, in: Scientific Assessment of Ozone Depletion, Global Ozone Research and Monitoring Project Report, World Meteorological Organization (WMO), 21–125, 2014. 
Clark, I. and Fritz, P.: Environmental isotopes in hydrogeology, Lewis Publishers, New York, 328 pp., 1997. 
DeMore, W. B.: Rate constant ratio for the reaction of OH with CH3D and CH4, J. Phys. Chem., 97, 8564–8566, 1993. 
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Short summary
Chloromethane is involved in stratospheric ozone depletion, but detailed knowledge of its global budget is missing. In this study stable hydrogen isotope analyses were performed to investigate the dominant loss process for atmospheric chloromethane with photochemically produced hydroxyl radicals. The findings might have significant implications for the use of stable isotope signatures in elucidation of global chloromethane cycling.
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