Criegee intermediates are involved in the formation of secondary organic aerosols. How?: Recent works show that they contribute to the oxidation of SO2
We have found that the studied ozonolysis reactions only led to nucleation in the presence of SO2
, which behaved as a catalyst. So the role of SO2
to form SOA depends on the structure of the alkene. For these reactions, the formation of low volatile organic acid is expected to be responsible for nucleation, since SO3
was not released.