title: Competing atmospheric reactions of CH2OO with SO2 and water vapour.
abstract: H2SO4 formation from the reaction CH2OO + SO2 has been measured as a function of the water vapour concentration for close to atmospheric conditions. Second-order kinetics with regard to water indicates a preferred reaction of CH2OO with the water dimer. The obtained kinetic parameters lead to the conclusion that the atmospheric fate of CH2OO is dominated by the reaction with water vapour. A comparison with results from CH3CHOO and (CH3)2COO indicates a structure dependent reactivity of stabilized Criegee intermediates.
authors.affiliation: Institute for Tropospheric Research, TROPOS, Leipzig, Germany. berndt@tropos.de.
authors.forename: Torsten
authors.initials: T
authors.lastname: Berndt
authors.forename: Jens
authors.initials: J
authors.lastname: Voigtländer
authors.forename: Frank
authors.initials: F
authors.lastname: Stratmann
authors.forename: Heikki
authors.initials: H
authors.lastname: Junninen
authors.forename: Roy L
authors.initials: RL
authors.lastname: Mauldin
authors.forename: Mikko
authors.initials: M
authors.lastname: Sipilä
authors.forename: Markku
authors.initials: M
authors.lastname: Kulmala
authors.forename: Hartmut
authors.initials: H
authors.lastname: Herrmann