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| Titel |
A two-dimensional volatility basis set – Part 2: Diagnostics of organic-aerosol evolution |
| VerfasserIn |
N. M. Donahue, J. H. Kroll, S. N. Pandis, A. L. Robinson |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 12, no. 2 ; Nr. 12, no. 2 (2012-01-16), S.615-634 |
| Datensatznummer |
250010519
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| Publikation (Nr.) |
 copernicus.org/acp-12-615-2012.pdf |
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| Zusammenfassung |
| We discuss the use of a two-dimensional volatility-oxidation space (2-D-VBS)
to
describe organic-aerosol chemical evolution.
The space is built around two coordinates, volatility and the degree of
oxidation, both of which can be constrained observationally or specified for
known molecules. Earlier work presented the thermodynamics of organics
forming the foundation of this 2-D-VBS, allowing us to define the
average composition (C, H, and O) of organics, including organic
aerosol (OA) based on volatility and oxidation state. Here we discuss how we
can analyze experimental data, using the 2-D-VBS to gain fundamental insight
into organic-aerosol chemistry. We first present a well-understood
"traditional" secondary organic aerosol (SOA) system – SOA from
α-pinene + ozone, and then turn to two examples of
"non-traditional" SOA formation – SOA from wood smoke and dilute
diesel-engine emissions. Finally, we discuss the broader implications of this
analysis. |
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