Author(s)

P. Behr, M. Breil and R. Zellner

Abstract

Laboratory Studies of the Uptake of Atmospheric Trace Gases on Solid Surfaces A contribution to subproject CMD P. Behr, M. Breil and R Zellner InstitutfurPhysikalische und Theoretische Chemie, Universitat GH Essen, D-45117 Essen, Germany Introduction Heterogeneous chemistry is important for the understanding and description of many atmospheric problems. The present project focusses on the experimental investigation of the uptake of gaseous species (NO, NO:, ^Os, HC1, HBr, HOC1, and HOBr) on pure ice and frozen salt(acid) solutions (NaCl, NaBr, HC1, and HBr). Further experiments will be carried out to study heterogeneous processes of radicals (NOs, HO:, and OH) on pure ice and diluted solid/aqueous solution surfaces. The choice of surfaces and radicals is based on the recent discovery of the chemistry in the marine boundary layer for which halogen activation for sea-salt aerosols has been sugge

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