Dynamical Study of Reactive Absorption of Gaseous Species

点击翻译按钮获取中文摘要

1. Mass transfer process is one of the very important elementary rate processes relevant to reactive absorption in chemical reaction engineering and also the uptake of gaseous trace species from the atmosphere to aerosol surfaces. This research aimed at the measurements of uptake coefficients using the novel impinging flow method, the understanding of the process based on the liquid phase chemical reactions, and also tile development of the technology for direct measurement the surface species using laser spectroscopic and/or mass-spectroscopic methods.2. Uptake coefficients of halogen species, which are important atmospheric trace species in atmospheric chemistry, were measured using the impinging flow method. In particular, the uptake coefficient of IィイD22ィエD2 was measured under various conditions, and analyzed by means of the newly devised numerical simulation method. The uptake process was found to be controlled by liquid phase chemical reactions.3. Technology for direct measurement of surface species was developed. They were multiphoton ionization method of surface species on liquid phase surfaces, and surface desorption mass-spectrometry for species on solid surfaces such as ice prepared at low temperature. These new technology could not be completely established, however, the potentiality of them was clearly demonstrated.