RUI: Spectroscopy and Dynamics of Marine Aerosol Particle Surfaces

在这项由化学系环境化学科学(ECS)计划支持的项目中，高露洁大学的Ephraim Wood，III教授和他的学生将使用分子探针方法和光电离光谱来表征模型海雾气溶胶粒子的表面环境。特别是，研究将集中在氯化钠与钙和镁盐的混合物上，这已被证明对表面化学特别重要，以及调查各种表面活性剂涂层作为海水有机含量的模型。这项工作还将探索这些模型粒子的组成和形态如何影响它们对气相多环芳烃(PAH)的吸收。这些实验的总体目标是将他们的方法应用到越来越复杂的环境中，更好地接近真实的对流层气溶胶粒子，深入了解控制这些粒子的形态和非均相化学的因素。除了对大气和环境科学的研究的影响外，拟议的研究还将对本科生的培训和发展产生重大的更广泛的影响。高露洁大学主要是一所本科院校(PUI)，PPI的研究小组完全由本科生组成。学生作为合著者出现在高露洁工作产生的所有PI的出版物上，他们在研讨会和全国会议上展示他们的工作。伍兹教授将参加广泛的教育项目，包括由奥德赛青年才俊中心主办的公开研讨会，由高露洁大学赞助的高中研讨会，以及面向高露洁学生的题为《科学、新闻媒体和你》的通识教育课程。

In this project supported by the Environmental Chemical Sciences (ECS) Program of the Division of Chemistry, Professor Ephraim Woods, III and his students at Colgate University will employ molecular probe methods and photo-ionization spectroscopy to characterize the surface environment of model sea spray aerosol particles. In particular, the research will focus on mixtures of sodium chloride with calcium and magnesium salts, which have been shown to be especially important to the surface chemistry, as well as investigating a variety of surfactant coatings as a model of the organic content of seawater. The work will also explore how the composition and morphology of these model particles affects their uptake of gas-phase polycyclic aromatic compounds (PAH's). The overarching goal of the experiments is to apply their methodologies to increasingly complex environments that better approximate real tropospheric aerosol particles, gaining insight into the factors that control the morphology and heterogeneous chemistry of these particles.In addition to the implications of the research for atmospheric and environmental sciences, a significant broader impact of the proposed research is the training and development of undergraduates. Colgate University is a primarily undergraduate institution (PUI), and the PI's research group is composed entirely of undergraduates. Students appear as coauthors on all of the PI's publications arising from work at Colgate, and they present their work in seminars and national meetings. Professor Woods will participate in broad educational programs including public seminars sponsored by the Odyssey Center for Talented Youth, high school seminars sponsored by Colgate University, and a general education course for Colgate students entitled "Science, the News Media, and You."