Water soluble organic compounds formed by oxidation of soot

Spectral absorption of biomass burning aerosol determined from retrieved single scattering albedo during ARCTAS

“…Enhanced spectral absorption on 17 April may be explained by changes to the OA in biomass burning plumes as they age, and/or possibly by differences in the original OA emissions. The oxidation of biomass burning primary organic aerosol (POA) may result in the formation of compounds with stronger spectral absorption signatures than the biomass burning POA emitted at the source, as has been observed in previous studies (Decesari et al, 2002;Marley et al, 2009). Additionally, secondary organic aerosol (SOA) generated in several laboratory experiments via both the light (photochemical) and dark (e.g., reaction with O 3 ) oxidation of gas-phase organics exhibited spectral absorption (Noziere et al, 2007;Bones et al, 2010;Zhong and Jang, 2011).…”

The Chemistry of Dicarboxylic Acids in the Atmospheric Aerosols

“…Around 5 to 10% of the known fraction is often limited to low molecular weight species, which are identified by standard analytical techniques, using gas chromatography coupled with mass spectrometry. A significant fraction of the organic mass in tropospheric aerosol, is comprised of high molecular weight, oxygenated species which remain unidentified (Decesari et al, 2002).…”

The Distribution of Particle-Phase Organic Compounds in the Atmosphere and Their Use for Source Apportionment during the Southern California Children’s Health Study

“…[1][2][3][4][5][6][7][8] Most of these efforts, however, have focused on a limited number of sampling sites, typically three or four, which are comprised of urban sampling locations with one remote background sampling location. These studies provide important information on the composition, origin, and potential impact of PM in the urban atmosphere.…”