Author(s)

C. Chiorboli, R. Piazza & V. Carassiti

Abstract

Modelling of the rate constant of the reaction of OH radical with hydrohaloalkanes C. Chiorboli, R. Piazza, V. Carassiti Centra de Fotoreattivitd e Catalisi, CNR, Dipartimento di Chimica deU'Universitd, Via Borsari 46, 44100 Ferrara, Italia INTRODUCTION In many applications hydrohaloalkanes (HCFC) are indicated as potential alternatives to the fully halogenated alkanes (CFC) because the reaction of hydrogen-containing compounds with radicals in the troposphere, results in their relatively rapid destruction. The primary atmospheric sink for these compounds during daylight hours is the reaction with hydroxyl radical (eq. 1) + OH -> 'Cx"Vi)*z + H^O (X = halogen) (1) Therefore, to allow the dominant tropospheric removal process of these compounds to be assessed, it is necessary to either experimental measure or reliably estimates the rate constant of reaction 1 (k^). Rate constants measurements are often complex and time- and cost-consuming: for these

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