Laboratory Studies of Heterogeneous/Multiphase Interactions of Atmospheric Trace Gases and Aerosols

大气微量气体和气溶胶的非均质/多相相互作用的实验室研究

• 批准号: 9905551
• 负责人: Paul Davidovits
• 金额: $ 47.49万
• 依托单位: Boston College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9905551&HistoricalAwards=false
• 关键词: Laboratory; Studies; Heterogeneous; Multiphase; Interactions

This project is a laboratory investigation of heterogeneous processes related to several aspects of tropospheric chemistry. The problems to be studied are: 1) heterogeneous reactions of aqueous NaCl and NaBr leading to the formation of photolytically labile Cl and Br compounds, 2) the mass accommodation coefficient of water molecules on pure water and on salt, sulfuric acid, and nitric acid solutions, and 3) the interactions of gas phase species with secondary organic aerosols. These studies will be carried out using three novel techniques: 1) a droplet train apparatus, 2) a bubble train apparatus, and 3) an aerosol mass spectrometer/aerosol flow tube reactor. These techniques make it possible to extract basic quantitative information necessary for modeling heterogeneous/multiphase interactions of gas phase species with atmospheric droplets and aerosols.

该项目是对与对流层化学若干方面有关的非均相过程进行的实验室调查。 要研究的问题是：1）NaCl和NaBr水溶液的非均相反应导致光解不稳定的Cl和Br化合物的形成; 2）水分子在纯水和盐、硫酸和硝酸溶液上的质量调节系数; 3）气相物种与二次有机气溶胶的相互作用。 这些研究将使用三种新技术进行：1）液滴串装置，2）气泡串装置，和3）气溶胶质谱仪/气溶胶流管反应器。 这些技术使人们有可能提取基本的定量信息建模气相物质与大气液滴和气溶胶的非均相/多相相互作用所必需的。