X-ray photoelectron spectroscopy studies of the reaction of nitric acid with sodium chloride: Effects of water, surface defects, and x-rays.

摘要

Through the research efforts in this dissertation, we are striving to understand the importance of the reactive chlorine cycle in the troposphere to the ozone balance and oxidation of organics in marine regions. Sea salt particles, containing NaCl as the main constituent, are believed to be the major source of reactive tropospheric chlorine. To develop a fundamental understanding of the processes involved, we have carried out studies which utilize X-Ray Photoelectron Spectroscopy (XPS) to follow the surface composition of NaCl single crystals as a function of sequential exposures to gaseous nitric acid and water vapor at room temperature. The uptake of HNO;The effects of water vapor and surface defects on the uptake of HNO