Insitute for High Temperature of the Russian Academy of Science, Izhorskaya 13/19, 125412, Moscow, Russia
currently at: Max Planck Institute for Nuclear Physics, P.O. Box 103980, 69029 Heidelberg, Germany
Received: 22 Sep 2009 – Discussion started: 16 Nov 2009
Abstract. The electron-excited chemistry of sulfur dioxide oxidation induced by UV irradiation of air with trace O3 and SO2 is considered. The importance of this mechanism is evaluated based on recent laboratory experiments on SO2 oxidation in a laminar tube with air induced by UV irradiation. Results show that under respective conditions the route of SO2 oxidation involving electron excited oxygen molecules may present an additional source of gaseous H2SO4 production to known OH-radical mechanism.
Revised: 05 Mar 2010 – Accepted: 08 Mar 2010 – Published: 31 Mar 2010
Sorokin, A.: One conceivable mechanism of UV-light induced SO2 Oxidation to H2SO4, Atmos. Chem. Phys., 10, 3141-3145, doi:10.5194/acp-10-3141-2010, 2010.