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Distribution of dicarboxylic acids and carbon isotopic ratios in aerosols from 1997 Indonesian forest fires

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Title: Distribution of dicarboxylic acids and carbon isotopic ratios in aerosols from 1997 Indonesian forest fires
Authors: Narukawa, Masahiro Browse this author
Kawamura, Kimitaka Browse this author →KAKEN DB
Takeuchi, Nobuo Browse this author
Nakajima, Teruyuki Browse this author
Keywords: Atmospheric Composition and Structure: Aerosols and particles
Geochemistry: Isotopic composition/chemistry
Geochemistry: Organic geochemistry
Information Related to Geographic Region: Asia
Issue Date: Oct-1999
Publisher: American Geophysical Union
Journal Title: Geophysical Research Letters
Volume: 26
Issue: 20
Start Page: 3101
End Page: 3104
Publisher DOI: 10.1029/1999GL010810
Abstract: Fine aerosol particles collected in Southeast Asia during 1997 Indonesian forest fires were studied for the concentrations of total carbon (TC), water-soluble organic carbon (WSOC) and low molecular weight dicarboxylic acids (C2–C12) as well as carbon isotopic ratios of TC (δ13CTC). TC and WSOC showed a large increase during the heavy forest fire event. At the same period, dicarboxylic acids, dominated by oxalic (C2) followed by succinic (C4) and malonic (C3) acids, also showed a concentration increase. Furthermore, the δ13CTC showed a decrease from ca. −25.5 to −27.5‰ during an intensified forest fire event, suggesting an addition of organic aerosols derived from C3 plants whose δ13C are lighter. These results indicate that the aerosol particles in Southeast Asia were significantly affected by the combustion processes of vegetations during the 1997 Indonesian forest fires that were extensively induced by El Ninõ event.
Rights: An edited version of this paper was published by AGU. Copyright 1999 American Geophysical Union.
Type: article (author version)
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 河村 公隆

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