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Water soluble organic compounds formed by oxidation of soot

TitleWater soluble organic compounds formed by oxidation of soot
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2002
AuthorsDecesari, S., Facchini M.C., Matta E., Mircea Mihaela, Fuzzi S., Chughtai A.R., and Smith D.M.
JournalAtmospheric Environment
Keywordsaerosol, Air pollution, Air pollution control, article, Atmospheric aerosols, Chromatographic analysis, cloud condensation nucleus, combustion, Condensation, controlled study, Ion exchange, Macromolecules, methodology, nonhuman, Nuclear magnetic resonance, organic compound, oxidation, Ozone, priority journal, Soot, Water soluble organic compounds (WSOC)

The water soluble organic compounds (WSOC) in soot samples as a function of the extent of ozone oxidation have been measured by a new methodology which utilises ion exchange chromatography, total carbon analysis and proton nuclear magnetic resonance. These results have been compared with the same analyses of various atmospheric aerosol samples. The WSOC produced from oxidation of soot particles increase rapidly with ozone exposure and consist primarily of aromatic polyacids which are found widely in atmospheric aerosols and which are frequently referred to as macromolecular humic-like substances (HULIS). This work demonstrates that the atmospheric oxidation of soot can produce HULIS in aerosols. The cloud condensation nuclei effectiveness of soot aerosol likely has its origin in these oxidation processes. Copyright © 2002 Elsevier Science Ltd.


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Citation KeyDecesari20021827