期刊
ATMOSPHERIC CHEMISTRY AND PHYSICS
卷 9, 期 6, 页码 1907-1928出版社
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/acp-9-1907-2009
关键词
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资金
- Alexander von Humboldt Foundation
The lightest Non Methane HydroCarbon (NMHC), i.e., acetylene (C2H2) is found to form secondary organic aerosol (SOA). Contrary to current belief, the number of carbon atoms, n, for a NMHC to act as SOA precursor is lowered to n=2 here. The OH-radical initiated oxidation of C2H2 forms glyoxal (CHOCHO) as the highest yield product, and >99% of the SOA from C2H2 is attributed to CHOCHO. SOA formation from C2H2 and CHOCHO was studied in a photochemical and a dark simulation chamber. Further, the experimental conditions were varied with respect to the chemical composition of the seed aerosols, mild acidification with sulphuric acid (SA, 3
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