Atmospheric chemistry of CF3COOH. Kinetics of the reaction with OH radicals

T.E. Møgelberg, O.J. Nielsen, J. Sehested, T.J. Wallington, M.D. Hurley

    Research output: Contribution to journalJournal articleResearch

    Abstract

    Two different experimental techniques were used to study the kinetics of the reaction of OH radicals with trifluoroacetic acid, CF3COOH. Using a pulse radiolysis absolute rate technique, rate constants at 315 and 348 K were determined to be (1.6 +/- 0.4) x 10(-13) and (1.5 +/- 0.2) x 10(-13) cm3 molecule-1 s-1, respectively. Using a long path-length FTIR relative rate technique a rate constant of (1.7 +/- 0.5) x 10(-13) cm3 molecule-1 s-1 was obtained at 296 K. In the atmosphere, reaction with OH radicals in the gas phase is estimated to account for 10%-20% of the loss of CF3COOH. The major fate of CF3COOH is rainout.
    Original languageEnglish
    JournalChemical Physics Letters
    Volume226
    Issue number1-2
    Pages (from-to)171-177
    ISSN0009-2614
    DOIs
    Publication statusPublished - 1994

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