Reactions and Deposition of H202 and Organic Compounds on Ice Films Representative of Tropospheric Ice Clouds

H2O2 和有机化合物在代表对流层冰云的冰膜上的反应和沉积

• 批准号: 9530835
• 负责人: Marin Robinson
• 金额: $ 4万
• 依托单位: Northern Arizona University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-12-01 至 1997-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9530835&HistoricalAwards=false
• 关键词: Reactions; Deposition; H202; Organic; Compounds

This starter grant award to Northern Arizona University will support the research of Professor Marin S. Robinson. The research examines the process by which ice is a scavenger of oxidized and partially oxidized organic molecules from the gas phase. Near-grazing angle reflection spectroscopy is used to examine bulk and surface properties of hydrogen peroxide uptake onto water-ice films representative of tropospheric ice clouds. Pure and doped films, as well as films co-deposited with organic reagents, are studied. Gas phase oxidation products are monitored using mass spectrometry. Condensed phase oxidation products are monitored using Fourier transform infrared-reflection absorbance spectroscopy. The results provide insights regarding the competition between gas phase and condensed phase oxidation mechanisms. The research clarifies the role ice plays as a tropospheric scavenger and aids in interpreting the complex heterogeneous chemistry that takes place in aqueous cloud droplets.

这个启动赠款奖给北方亚利桑那大学将支持 Marin S教授的研究。罗宾逊。 该研究审查了 冰是氧化和部分氧化的清除剂的过程 从气相中分离有机分子。 近掠射角反射 光谱学被用来检查氢的本体和表面性质 对流层冰代表的水-冰膜上的过氧化物吸收 云纯膜和掺杂膜，以及与有机物共沉积的膜 试剂进行了研究。 气相氧化产物的监测使用 质谱分析法来 监测凝相氧化产物 使用傅里叶变换红外反射吸收光谱法。 的 结果提供了关于气相和 凝聚相氧化机理 这项研究阐明了冰作为对流层清道夫的作用， 有助于解释复杂的多相化学反应， 在含水云滴中。