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

这个项目是对与对流层化学的几个方面有关的不同过程的实验室调查。所要研究的问题包括：1)氯化钠和溴化钠水溶液的非均相反应导致形成光解不稳定的氯和溴化合物，2)水分子在纯水和盐、硫酸和硝酸溶液中的质量调节系数，以及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：1)液滴串装置，2)气泡串装置，3)气溶胶质谱仪/气溶胶流动管反应器。这些技术使得有可能提取对气相物种与大气液滴和气溶胶的非均相/多相相互作用进行建模所需的基本定量信息。

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.