Comparative studies on organic chemical composition of atmospheric aerosols from Chinese 14 cities, Jeju Island and Chichi-Jima Island and their hygroscopic properties

中国14个城市及济州岛和父岛大气气溶胶有机化学成分及其吸湿特性对比研究

• 批准号: 17340166
• 负责人: KAWAMURA Kimitaka
• 金额: $ 9.98万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17340166/
• 关键词: Chinese-megacities; Chinese aerosols; Dicarboxylic acids; Levoglucosan; Normal alkanes; Photochemistry; Biomass burning; Fossil fuel combustion; シュウ酸; 大気化学; 化石燃料の燃焼; 環境分析; 地球化学; 有機物

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 midwest region during winter (up to 125 mg 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 they are characterized by secondary oxidation, followed by fossil fuel combustion and plastic emissions.

项目成果

大気中に存在する有機エアロゾルの組成分布と変質

大气中有机气溶胶的成分分布及变化

• 发表时间: 2006
• 期刊: 地球化学 40
• 作者: 河村 公隆

Determination of low molecular weight dicarboxylic acids in seawater samples

海水样品中低分子量二羧酸的测定

• 发表时间: 2006
• 期刊: Analytical Chemistry 78
• 作者: 河村 公隆;Gehui Wang;Marc Tedetti
• 通讯作者: Marc Tedetti

Molecular characteristics of of urban organic aerosols from Nanjing : A case study of a mega-city in China

南京城市有机气溶胶的分子特征：以中国特大城市为例

• 发表时间: 2005
• 期刊: Environmental Science and Technology Vol.39
• 作者: 河村 公隆;Gehui Wang;Marc Tedetti;Michihiro Mochida;Haobo Wang;Haobo Wang;Kimitaka Kawamura;Kimitaka Kawamura;Gehui Wang
• 通讯作者: Gehui Wang

Molecular, seasonal and spatial distribution of organic aerosols from fourteen Chinese cities

中国14个城市有机气溶胶的分子、季节和空间分布

• 发表时间: 2006
• 期刊: Environ. Sci. and Technol. 40
• 作者: 河村 公隆;Gehui Wang
• 通讯作者: Gehui Wang

第5版実験化学講座20-2 環境化学(日本化学会編)

第5版实验化学课程20-2环境化学（日本化学会编）

• 发表时间: 2007
• 作者: 河村 公隆;Gehui Wang;Marc Tedetti;Michihiro Mochida;Haobo Wang;Haobo Wang;Kimitaka Kawamura;Kimitaka Kawamura;Gehui Wang;Masao Uchida;河村 公隆
• 通讯作者: 河村 公隆