Interfacial Chemistry of Alkali Halides

本项目是一项实验研究，旨在为碱性和卤化镁表面在干燥和潮湿条件下的氧化提供基础信息。振动和频(SFG)光谱技术将被应用于这项研究，这是非常适合的，因为它对提供分子水平信息的固体和液体表面的物种很敏感。此外，还将使用质谱仪监测气相组成，拉曼光谱和红外光谱将提供反应前后水溶液的组成。还将研究与大气有关的更复杂的系统，其中包括含氧有机化合物和烷基卤化物化合物的加入。这些实验室研究的结果将有助于对涉及海洋边界层中卤素的机制有定量的了解。这些信息可以合并到大气化学过程的数值模型中，以检查这些过程相对于众所周知的气相过程的重要性。该项目将涉及对来自代表性不足群体的学生进行大量培训，以帮助提高地球科学研究的多样性。

This project is an experimental study aimed to provide fundamental information on the oxidation of alkali and magnesium halide surfaces under dry and wet conditions. The technique of vibrational sum frequency generation (SFG) spectroscopy will be applied to this study, which is well suited because it is sensitive to species located on solid and liquid surfaces providing molecular level information. In addition, mass spectrometry will be employed to monitor the gas phase composition, and Raman and infrared spectroscopy will provide the composition of aqueous solutions before and after reaction. More complex, atmospherically relevant systems will also be studied that include incorporation of oxygenated organic and alkyl halide compounds.The results from these laboratory studies will help bring quantitative understanding to the mechanisms involving halogens in the marine boundary layer. This is information that can be incorporated into numerical models of atmospheric chemical processes to examine importance of these processes relative to well known gas phase processes. This project will involve significant training of students from underrepresented groups helping improve diversity in geosciences research.