Different roles of water in secondary organic aerosol formation from toluene and isoprene
Short Summary: In this work, the opposite effects of relative humidity (RH) on secondary organic aerosol (SOA) formation from toluene and isoprene were observed and have been well explained in terms of various experimental data and model simulations. The increase of SOA from toluene under humid conditions is mainly contributed by aqueous reactions of water soluble products, whereas SOA formation from isoprene-NO2 irradiations is controlled by stable Criegee intermediates that are greatly influenced by water.
Citation: Jia, L. and Xu, Y.: Different roles of water in secondary organic aerosol formation from toluene and isoprene, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2017-1064
Photooxidation of cyclohexene in the presence of SO2: SOA yield and chemical composition
SOA yields of cyclohexene photooxidation in the presence of NOx at different initial SO2 concentrations
Citation: Liu, S., Jia, L., Xu, Y., Tsona, N. T., Ge, S., and Du, L.: Photooxidation of cyclohexene in the presence of SO2: SOA yield and chemical composition, Atmos. Chem. Phys., 17, 13329-13343, https://doi.org/10.5194/acp-17-13329-2017, 2017.
Effects of inorganic seeds on secondary organic aerosol formation from photochemical oxidation of acetone in a chamber
•Acetone is confirmed to be one of the sources of SOA.
•Participation of inorganic seeds into acetone SOA is determined.
•Chemical compositions and formation mechanism of acetone SOA are proposed.
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