title: Direct evidence for a substantive reaction between the Criegee intermediate, CH2OO, and the water vapour dimer.
abstract: The C1 Criegee intermediate, CH2OO, reaction with water vapour has been studied. The removal rate constant shows a quadratic dependence on [H2O], implying reaction with the water dimer, (H2O)2. The rate constant, kCH2OO+(H2O)2 = (4.0 ± 1.2) × 10(-12) cm(3) molecule(-1) s(-1), is such that this is the major atmospheric sink for CH2OO.
authors.affiliation: School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK. m.blitz@leeds.ac.uk.
authors.forename: Tom R
authors.initials: TR
authors.lastname: Lewis
authors.forename: Mark A
authors.initials: MA
authors.lastname: Blitz
authors.forename: Dwayne E
authors.initials: DE
authors.lastname: Heard
authors.forename: Paul W
authors.initials: PW
authors.lastname: Seakins