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Atmospheric isoprene ozonolysis: impacts of stabilised Criegee intermediate reactions with SO2, H2O and dimethyl sulfide

M.J.Newland, A.R.Rickard, L.Vereecken, A.Muñoz, M.Rdenas, and W.J.Bloss Atmos.Chem.Phys., 15, 9521-9536
DOI: 10.5194/acp-15-9521-2015, 2015



Stabilised Criegee intermediates (SCIs) are formed through alkene-ozone reactions, which occur throughout the atmospheric boundary layer.

Recent direct laboratory studies have shown that SCI react rapidly with SO2, NO2 and other trace gases, affecting air quality and climate. This paper presents experimental data from the EUPHORE atmospheric simulation chamber, in which the effects of the ozonolysis of isoprene were determined, on the oxidation of SO2 as a function of H2O and dimethyl sulphide concentration.