Gas-Surface Chemistry and Analysis of Single Aerosol Particles

在该项目中，由地球科学局化学处实验物理化学项目和大气科学处大气化学项目联合资助，贝尔将开展单个气溶胶颗粒的形态和化学研究。为此目的开发了一种独特的气溶胶飞行时间质谱仪。单个气溶胶颗粒将被红外激光汽化，并被真空紫外激光电离，从而定量测定化学成分、涂层厚度和反应深度。获得的数据将供物理化学和大气化学研究人员使用。在该项目中，将开发一种新型仪器并用于研究单个气溶胶颗粒的化学和形态。预计对现有方法进行重大改进。这项研究的结果对于物理化学和大气化学领域的科学家来说具有重要价值。研究结果将有助于更好地了解气溶胶在环境和大气污染中所起的作用。学生和博士后研究员将参与这项研究。

In this project, jointly funded by the Experimental Physical Chemistry Program of the Chemistry Division and the Atmospheric Chemistry Program of the Division of Atmospheric Sciences of the Directorate for Geosciences, Baer will conduct research on the morphology and chemistry of individual aerosol particles. A unique aerosol time-of-flight mass spectrometer has been developed for this purpose. Individual aerosol particles will be vaporized by an IR laser, and ionized by a VUV laser to allow a quantitative determination of chemical composition, coating thickness, and reaction depth. The data obtained will be of use to researchers in physical chemistry and atmospheric chemistry.In this project a novel instrument will be developed and used for the investigation of the chemistry and morphology of individual aerosol particles. Significant improvements over existing methods are envisioned. The results of this research will be of value to scientists working in physical chemistry and atmospheric chemistry. The results will contribute to a better understanding of the role played by aerosols in the environment and atmospheric pollution. Students and post doctoral research associates will participate in this research.