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Received July 30, 1996,Revised , Accepted , Available online

Volume 9,1997,Pages 361-365

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Rate constants for the reaction of hydroxyl radicals with HFC 134a (CH2FCF3) have been measured by the discharge flow resonance fluorescence (DF RF) technique over the temperature range 288—370 K. The derived Arrhenius equation is: k-12 exp(-(1662±41)/ T )cm3/(mol·s). The tropospheric lifetime of HFC 134a is estimated to be 10.5 years, which is in excellent agreement with the most recent results.