Atmospheric fate of difluoromethane, 1, 1, 1-trifloroethane, pentafluoroethane, and 1, 1-dichloro-1-fluoroethane: rate coefficients for reactions with hydroxyl and UV …

…, A Mellouki, T Gierczak, JB Burkholder…

Index: Talukdar, Ranajit; Mellouki, Abdelwahid; Gierczak, Tomasz; Burkholder, James B.; McKeen, Stuart A.; Ravishankara, A. R. Journal of Physical Chemistry, 1991 , vol. 95, # 15 p. 5815 - 5821

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Citation Number: 77

Abstract

The absolute rates coefficients for reactions of hydroxyl radical with four halocarbons (CH2F2 (HFC-32), CH3CF3 (HFC-143a). CF3CHF2 (HFC-I25), and CH3CFC12 (HCFC- I4lb)), which are potential substitutes for CFCs, were measured by using the discharge flow- laser magnetic resonance and pulsed photolysis-laser-induced fluorescence techniques between 222 and 393 K. The UV absorption cross sections for HCFC-14lb between 190 ...