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| Titel |
Composition of particulate organic matter sampled in the troposphere over Siberia |
| VerfasserIn |
Boris D. Belan, Natalya G. Voronetskaya, Galina S. Pevneva, Anatoly K. Golovko, Alexander S. Kozlov, Denis V. Simonenkov, Gennadii N. Tolmachev |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250105364
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| Publikation (Nr.) |
 EGU/EGU2015-4886.pdf |
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| Zusammenfassung |
| In this paper we present some results of the analysis of organic compounds contained in the
particulate matter sampled in the Siberian air shed during monthly research flights in
2012-2013. Aerosol sampling was performed in the tropospheric layer from 500 to 7000 m
over the Karakan pine forest located on the east bank of the Novosibirsk Reservoir (River
Ob). The Optik TU-134 aircraft laboratory was used as a research platform for in-situ
measurements of atmospheric trace gas species and aerosols, as well as a particulate matter
collection on PTFE filters.
Analysis of the particulate organic matter sampled in the Siberian air shed in 2012-2013
allowed us to draw the following conclusions:
the total content of n-alkanes increases in the spring and decreases in the winter.
the length of the n-alkane homologous series had no seasonal dependence.
maximum in the molecular weight distribution of n-alkanes varies depending on the
season; compounds with C17, C22 and C25 chains dominated in winter and spring 2012,
whereas in summer – C17 ones; in 2013 compounds with C17 chains dominated in winter,
C18–C20 – in spring, and C21 and C23 – in summer.
Carbon preference index (CPI) value for a given chain length of the homologous series
(on the average from C12 to C28) did not reflect the contribution of sources of n-alkanes in
the atmosphere.
This work was supported by Interdisciplinary integration projects of the Siberian Branch
of the Russian Academy of Science No. 35, No. 70 and No. 131; the Branch of Geology,
Geophysics and Mining Sciences of RAS (ProgramÂNo. 5); State contracts of the Ministry of
Education and Science of Russia No. 14.604.21.0100, (RFMTFIBBB210290) and No.
14.613.21.0013 (RFMEFI61314X0013); and Russian Foundation for Basic Research (grants
No. 14-05-00526 and 14-05-00590). |
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