Relative Rate Coefficients of OH Radical Reactions with CF3CF=CClCF3 and CF3CH=CHCH2OH. Ozone Depletion Potential Estimate for CF3CF=CClCF3

JUAN PABLO ARANGUREN, IGNACIO PISSO, SILVINA PEIRONE, PABLO COMETTO, SILVIA LANE

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2013 vol. 67 p. 85 - 85

he relative rate method was used to determine the rate coefficients for the reactions of OH radicals with CF3CF]CClCF3 (k1) and CF3CH]CHCH2OH (k2). Experiments were carried out at (298 2) K andwith CF3CF]CClCF3 (k1) and CF3CH]CHCH2OH (k2). Experiments were carried out at (298 2) K and atmospheric pressure using ultra pure air or ultra pure nitrogen as the gas bath. The k1 value was measured relative to those of chloroethane and ethane, and the k2 value was measured relative to those of cyclohexene and 1-pentene. The following rate coefficients were derived in units of cm3 molecule1 s1: k1 ¼ (3.3 0.9) 1013 and k2 ¼ (3.3 0.9) 1011. This is the first experimental determination of k1 and k2. The rate coefficients were used to estimate the atmospheric lifetimes for the studied haloalkenes considering the OH-initiated oxidation process. The ozone depletion potential (ODP) for CF3CF]CClCF3 was estimated following a recently-developed technique based on Lagrangian trajectories,