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

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タイトル: Distribution of dicarboxylic acids and carbon isotopic ratios in aerosols from 1997 Indonesian forest fires
著者: Narukawa, Masahiro 著作を一覧する
Kawamura, Kimitaka 著作を一覧する
Takeuchi, Nobuo 著作を一覧する
Nakajima, Teruyuki 著作を一覧する
キーワード: Atmospheric Composition and Structure: Aerosols and particles
Geochemistry: Isotopic composition/chemistry
Geochemistry: Organic geochemistry
Information Related to Geographic Region: Asia
発行日: 1999年10月
出版者: American Geophysical Union
誌名: Geophysical Research Letters
巻: 26
号: 20
開始ページ: 3101
終了ページ: 3104
出版社 DOI: 10.1029/1999GL010810
抄録: 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.
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 河村 公隆


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