Heterogeneous reactions with HOx radicals and property changes in organic aerosol particles

与HOx自由基的非均相反应及有机气溶胶颗粒的性质变化

• 批准号: 22310018
• 负责人: KANAYA Yugo
• 金额: $ 9.32万
• 依托单位: Japan Agency for Marine-Earth Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22310018/
• 关键词: 有機エアロゾル; 大気中酸化; 光学特性; 不均一反応; 吸湿特性; 環境質定量化・予測; 地球変動予測; 大気現象

Changes in the optical properties of organic aerosol particles upon exposure to HOx radicals, major atmospheric oxidants, were measured in the laboratory. Dependence of the scattering coefficient on the relative humidity was measured with an integrating nephelometer equipped with a humidifier. In addition to aging, presence of organics originally having large hygroscopicity could control the optical properties of the atmospheric organic aerosols. These findings were used to interpret the roles of organics in determining the humidity dependence of the aerosol scattering coefficient as observed in China and Fukue Island.

在实验室中测量了有机气溶胶粒子在暴露于主要大气氧化剂HOx自由基后的光学性质的变化。用配有加湿器的积分式浊度计测量了散射系数与相对湿度的关系。除了老化外，原本具有较大吸湿性的有机物的存在可以控制大气有机气溶胶的光学性质。这些发现被用来解释有机物在决定中国和福夸岛观测到的气溶胶散射系数对湿度的依赖性中所起的作用。

项目成果

Kinetic studies of heterogeneous reaction of HO2 radical by dicarboxylic acid particles

二羧酸颗粒与HO2自由基非均相反应的动力学研究

• 发表时间: 2013
• 期刊: Int. J. Chem. Kinet
• 作者: Taketani;F. et al
• 通讯作者: F. et al

Dependence of aerosol scattering coefficients on relative humidity observed at two coastal sites on the East China Sea: Comparison to remote observations and influence of chemical composition

东海两个沿海地点观测到的气溶胶散射系数对相对湿度的依赖性：与远程观测的比较和化学成分的影响

• 发表时间: 2011
• 作者: H. Matsuda;Y. Sato;K. Kurisaki;K.Yoshimura;金谷有剛ほか
• 通讯作者: 金谷有剛ほか

Dependence of aerosol scattering coefficients on relative humidity observed at two coastal sites on the East China Sea : Comparison to remote observations and influence of chemical composition

东海两个沿海地点观测到的气溶胶散射系数对相对湿度的依赖性：与远程观测的比较和化学成分的影响

• 发表时间: 2011
• 作者: Mitsuda;C.;M. Suzuki;N. Manago;Y. Naito;C. Takahahi;K. Imai;H. Hayashi;T. Sakazaki;T. Sano;H. Taniguchi;and M. Shiotani;北古賀勇樹ほか;金谷有剛
• 通讯作者: 金谷有剛

Isoprene chemical mechanism evaluation using ensemble observations of ambient HOx concentrations during the HOxComp field campaign

使用 HOxComp 现场活动期间环境 HOx 浓度的整体观测来评估异戊二烯化学机制

• 发表时间: 2012
• 作者: Kudo;R.;A.Uchiyama;A.Yamazaki;T.Sakami;山田 努・加藤大和;徐健青;金谷有剛ほか
• 通讯作者: 金谷有剛ほか

大気中イソプレン新規気相反応のHOxラジカル濃度への影響

大气异戊二烯新型气相反应对HOx自由基浓度的影响

• 发表时间: 2012
• 作者: Imai;K.;M. Shiotani;M. Suzuki;N. Manago;T. Sano;C. Mitsuda;and Y. Naito;金谷有剛ほか
• 通讯作者: 金谷有剛ほか