Solvated Salts and Acids: Contributions to Basic Understanding of Nucleation, Particle Growth and Aerosol Chemistry

这个项目涉及与大气相关的水系统中与酸和盐的溶解有关的过程的实验室研究，即云滴、水合气溶胶和冰晶。这些活动包括详细研究酸和盐的溶剂化作用，确定酸对卤化物在冷凝相和气相之间分配的影响，以及离子诱导成核的检查。所有这些活动都具有重大的现实意义，因为需要加强对气溶胶-气体相互作用和卤素在对流层化学中的可能作用的基本了解。此外，关于离子诱导成核的可能重要性的推测已经发表，但缺乏定量评估它所需的基本热化学数据。这项研究试图解决我们目前在这些领域的理解上的差距。该项目的广泛影响包括在这些重要和专题研究领域为研究生提供高质量的培训。此外，这项工作的结果可能会显著影响对与气溶胶有关的基本过程的理解，从而导致改进的数值模式，并可能更好地预测全球变化引起的相关大气过程的变化。

This project involves laboratory studies of processes related to acid and salt dissolution in atmospherically relevant aqueous systems, namely cloud droplets, hydrated aerosols, and ice crystals. The activities include detailed studies of the solvation of acids and salts, qualifying the influence of acids on the partitioning of halides between the condensed and gas phases, and examination of ion-induced nucleation. All of these activities have significant current relevance as there is need for increased fundamental understanding of aerosol-gas interactions and the possible role of halogens in tropospheric chemistry. In addition, speculations on the possible importance of ion-induced nucleation have been published, but the basic thermochemical data needed to assess it quantitatively are lacking. This study seeks to address current gaps in our understanding in these areas.Broader impacts of this project include providing high quality training of graduate students in these important and topical research areas. In addition, the results of this work are likely to significantly impact understanding of basic aerosol-related processes, thus leading to improved numerical models, and likely better ability to predict changes in related atmospheric processes due to global changes.