Chemical structures of organic aerosol and their links with sources and light-absorbing properties

有机气溶胶的化学结构及其与来源和光吸收特性的联系

• 批准号: 21F20397
• 负责人: 持田 陸宏
• 金额: $ 1.47万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-28 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21F20397/
• 关键词: organic aerosol; mass spectrometry; biomass burning; chemical structure; light absorption; Australia

The mass spectrometric analysis for water-soluble and water-insoluble components extracted from atmospheric aerosol samples collected during COALA-2020 campaign in New South Wales, Australia, in 2020 (cut-off diameter: 0.95 micrometer) was in part performed under this research project by the use of an high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS). In this analysis, the solutions of water-soluble and water-insoluble components from the aerosol samples were nebulized using a home-made nebulizer with compressed cylinder air. The generated aerosols were passed through diffusion scrubbers to remove solvent vapors, which was followed by the exchange of the carrier gas to argon in gas exchange device. The sample aerosol particles in the argon flow were transferred to the HR-ToF-AMS for the analysis using electron ionization mass spectrometry. This mass spectrometric analysis, along with that was performed after the experiments under this project, is expected to contribute to the understanding of the contrasting roles of biomass burning organic aerosol and biogenic secondary organic aerosol: both of them are of biomass origin but they are from different emission pathways.

对2020年澳大利亚新南威尔士州COALA-2020活动期间采集的大气气溶胶样品中提取的水溶性和水不溶性成分进行的质谱分析（截止直径：0.95微米）部分是在该研究项目下进行的通过使用高分辨率飞行时间气溶胶质谱仪 (HR-ToF-AMS)。在该分析中，使用自制雾化器和压缩气缸空气对气溶胶样品中的水溶性和水不溶性成分的溶液进行雾化。产生的气溶胶通过扩散洗涤器去除溶剂蒸气，然后在气体交换装置中将载气交换为氩气。将氩气流中的样品气溶胶颗粒转移至 HR-ToF-AMS，使用电子电离质谱进行分析。这种质谱分析以及在该项目下的实验后进行的分析预计将有助于理解生物质燃烧有机气溶胶和生物二次有机气溶胶的对比作用：它们都是生物质来源的，但它们来自不同的排放途径。

项目成果

COALA-2020観測においてオーストラリアで採取した大気エアロゾル 試料の化学分析

COALA-2020 观测期间在澳大利亚收集的大气气溶胶样本的化学分析

• 发表时间: 2021
• 作者: 持田陸宏;大畑祥;横山容子;五十嵐元美;Dhananjay K. Deshmukh, Bhagawati Kunwar;河村公隆;Sonia Afsana;Quang Dang;Clare Palton-Walsh
• 通讯作者: Clare Palton-Walsh

COALA-2020観測においてオーストラリアで採取した大気エアロゾル試料の化学構造・光吸収特性の分析

COALA-2020观测期间澳大利亚采集的大气气溶胶样品的化学结构和光吸收特征分析

• 发表时间: 2022
• 作者: 持田陸宏;Ruichen Zhou;Sonia Afsana;大畑祥;横山容子;五十嵐元美;Dhananjay K. Deshmukh;Bhagawati Kunwar;河村公隆;Quang Dang;Clare Palton-Walsh
• 通讯作者: Clare Palton-Walsh

University of Wollongong(オーストラリア)

卧龙岗大学（澳大利亚）

Atmospheric organic aerosol from terrestrial ecosystems: a field study in Australia and a plan to develop a field station in Hokkaido

来自陆地生态系统的大气有机气溶胶：澳大利亚的实地研究和在北海道建立实地站的计划

• 发表时间: 2021
• 作者: Michihiro Mochida;Sho Ohata;Yoko Yokoyama;Motomi Igarashi;Dhananjay K. Deshmukh;Bhagawati Kunwar;Kimitaka Kawamura;Sonia Afsana;Quang Dang;and Clare Palton-Walsh
• 通讯作者: and Clare Palton-Walsh