Chemical compositions, spatial distributions and hygroscopic properties of organic aerosols from East and South Asia

东亚和南亚有机气溶胶的化学成分、空间分布和吸湿特性

• 批准号: 19204055
• 负责人: KAWAMURA Kimitaka
• 金额: $ 31.45万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-19204055/
• 关键词: 大気圏; 水圏化学; 大気エアロゾル; 東・南アジア; エアロゾル; 化学組成; 吸湿特性; 雲凝結核; 大気圏・水圏化学

Atmospheric aerosols, collected from China, Korea, Mongolia, India and Japan as well as coastal and remote islands, have been studied for organic chemical compositions. The aerosols from Manshan, 40 km north of Beijing, showed higher concentrations of dicarboxylic acids such as oxalic acid than those from Beijing, suggesting a secondary (photochemical) production of water-soluble organic acids during atmospheric transport. Indian aerosols from New Delhi showed very high concentrations of low molecular weight diacids. Aerosols from Ulaanbaatar were studied for the hygroscopicity, indicating that the growth factor (Gf=1.22) is close to that of biomass burning aerosols.

对从中国、韩国、蒙古、印度和日本以及沿海和偏远岛屿收集的大气气溶胶进行了有机化学成分研究。来自北京以北40公里的满山的气溶胶显示，草酸等二元酸的浓度高于北京的气溶胶，这表明在大气输送过程中二次（光化学）产生了水溶性有机酸。来自新德里的印度气溶胶显示出非常高浓度的低分子量二酸。对乌兰巴托气溶胶的吸湿性进行了研究，表明生长因子（Gf=1.22）与生物质燃烧气溶胶的生长因子接近。

项目成果

Molecular compositions and transformations of dicarboxylic acids, ketoacids, α-dicarbonyls in marine aerosols over the western North Pacific during long-range transport

北太平洋西部海洋气溶胶在长程运输过程中二羧酸、酮酸、α-二羰基的分子组成和转化

• 发表时间: 2010
• 作者: 河村公隆;他
• 通讯作者: 他

Long-term trends of aerosol carbon and nitrogen, their stable isotopic compositions, and water-soluble organic carbon in the western North Pacific

北太平洋西部气溶胶碳和氮及其稳定同位素组成和水溶性有机碳的长期趋势

• 发表时间: 2009
• 作者: Kimitaka Kawamura;Eri Tachibana;Nobuhiko Umemoto
• 通讯作者: Nobuhiko Umemoto

Elevated nitrogen isotopic ratios of tropical Indian 1 aerosols from Chennai : Implication for the origins of aerosol nitrogen in South and Southeast Asia

金奈热带印度 1 气溶胶氮同位素比升高：对南亚和东南亚气溶胶氮起源的影响

• 发表时间: 2010
• 期刊: Atmospheric Environment
• 影响因子: 5
• 作者: 植木達博、FNUGROHO;R.ANUGRAHA;日高芳樹、甲斐昌一;Chandra Mouli Pavuluri
• 通讯作者: Chandra Mouli Pavuluri

Seasonal variations of diacids, ketoacids and a-dicarbonyls in marine aerosols at Gosan, Jeju Island : Implications for their formation and degradation during long-range transport

济州岛高山海洋气溶胶中二酸、酮酸和α-二羰基的季节性变化：对其在远距离运输过程中形成和降解的影响

• 发表时间: 2010
• 期刊: Journal of Geophysical Research
• 作者: FNUGROHO;T.UEKI;R.ANUGRAHA;Y.HIDAKA;S.KAI;Shuvashish Kundu
• 通讯作者: Shuvashish Kundu

Distributions and diurnal variations of dicarboxylic acids and related compounds in suburban aerosols collected at Mangshan, northern China

中国北方蟒山郊区气溶胶中二羧酸及相关化合物的分布和日变化

• 发表时间: 2010
• 作者: He N.;河村公隆
• 通讯作者: 河村公隆