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High loadings and source strengths of organic aerosols in China

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Title: High loadings and source strengths of organic aerosols in China
Authors: Wang, Gehui Browse this author
Kawamura, Kimitaka Browse this author →KAKEN DB
Watanabe, Tomomi Browse this author
Lee, Shuncheng Browse this author
Ho, Kinfai Browse this author
Cao, Junji Browse this author
Keywords: Chinese organic aerosols
spatial and seasonal distributions
molecular compositions
Issue Date: 17-Nov-2006
Publisher: American Geophysical Union
Journal Title: Geophysical Research Letters
Volume: 33
Start Page: L22801
Publisher DOI: 10.1029/2006GL027624
Abstract: Nation-wide studies of organic aerosols were conducted on a molecular level in 15 Chinese cities. The results showed strikingly high levels of organic compounds (e.g., annual concentrations of polycyclic aromatic hydrocarbons, phthalates, sugars and diacids are 110, 370, 400 and 830 ng m−3, respectively), especially in the mid-west region during winter (up to 125 μg m−3 organic carbon). Fossil fuel combustion and/or biomass burning products are 3−30 times more abundant in winter than in summer. In contrast, significant quantity of phthalates (168−2200 ng m−3) was detected in summer. Concentrations of the pollutants are generally 1−3 orders of magnitude higher than those in developed countries. Their source strengths are characterized in winter by fossil fuel combustion, followed by secondary oxidation, plant wax emissions and biomass burning, whereas in summer by secondary oxidation, followed by fossil fuel combustion and plastic emissions.
Rights: An edited version of this paper was published by AGU. Copyright 2006, American Geophysical Union, GEOPHYSICAL RESEARCH LETTERS, 33.
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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