Organic Chemistry at the Sulfuric Acid-Vapor Interface

这项研究项目得到了分析和表面化学计划的支持，解决了有机分子与液体硫酸溶液表面的反应性问题。开发了一种仪器，可以在与大气酸性气溶胶化学相关的条件下，研究反应物的表面反应、扩散和整体分配，并鉴定解吸的产物种类。考察了这些有机分子反应的动力学和机理随表面温度、水蒸气压力、酸组成和有机反应物流量的变化。对气液相互作用的物理化学和对流层气溶胶化学的基本了解是该项目在明尼苏达大学杰弗里·罗伯茨教授的实验室开展的成果。人们对气液表面反应的机理和动力学知之甚少。这项研究项目利用直接为这些研究开发的装置，研究了有机分子与硫酸液体表面反应的动力学和机理。这些研究的结果与了解对流层气溶胶化学有关。

This research project, supported in the Analytical and Surface Chemistry Program, addresses the question of the reactivity of organic molecules with the surface of liquid sulfuric acid solutions. Instrumentation is developed that allows the study of surface reaction, diffusion and bulk partitioning of reactant products, and identification of desorbed product species, under conditions relevant to atmospheric acid aerosol chemistry. Kinetics and mechanisms of these organic molecule reactions as a function of surface temperature, water vapor pressure, acid composition, and organic reactant flux are examined. A basic understanding of the physical chemistry of gas-liquid interactions, and tropospheric aerosol chemistry is the outcome of this project carried out in the laboratory of Professor Jeffrey Roberts at the University of Minnesota. Very little is known about the mechanisms and kinetics of gas-liquid surface reactions. This research project addresses the kinetics and mechanisms of organic molecule reactions with the surface of sulfuric acid liquids, using an apparatus directly developed for these studies. The results of these investigations are relevant to an understanding of tropospheric aerosol chemistry.