Infrared Spectroscopy of Tropospheric Aerosols

9631838尤因在这个项目中，将使用红外光谱来研究对流层气溶胶。将在实验室中模拟高纬度和中纬度地区的对流层条件，产生和研究海盐气溶胶粒子。红外光谱将跟踪氮氧化物和氮氧化物的酸对这些气溶胶的化学转化。其目的是揭示含有氯化钠的气溶胶随着化学活性氯的释放而转化为硝酸钠的依赖温度和湿度的机制。即使在干旱条件下，被吸附的水层也会影响盐粒表面的化学成分。将研究盐水-水界面的性质。还将对海洋边界层常见的气溶胶盐溶液液滴进行调查。计划进行光谱实验，研究二氧化硫在水和冰粒气溶胶中的吸收。***

9631838 Ewing In this project, tropospheric aerosols will be studied using infrared spectroscopy. Sea salt aerosol particles will be generated and studied in the laboratory under conditions that mimic those in the troposphere both in high and mid-latitudes. Chemical transformation of these aerosols by nitrogen oxides and acids of nitrogen oxides will be followed by infrared spectroscopy. The object is to unravel the temperature and humidity dependent mechanisms by which aerosols containing sodium chloride are transformed into sodium nitrate with the release of chemically active chlorine. Adsorbed layers of water influence the chemistry on salt particle surfaces even under arid conditions. The properties of the salt-water interface will be studied. Aerosol salt solution droplets, common to the marine boundary layer, will also be investigated. Spectroscopic experiments to study the uptake of sulfur dioxide in aerosols of water and ice particles are planned. ***