Amine Chemistry Relevant to Atmospheric New Particle Formation and Growth

与大气新颗粒形成和生长相关的胺化学

• 批准号: 1110554
• 负责人: Murray Johnston
• 金额: $ 50.3万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-01 至 2015-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1110554&HistoricalAwards=false
• 关键词: Amine; Chemistry; Relevant; Atmospheric; New

The Environmental Chemical Sciences (ECS) program of the Division of Chemistry will support the research program of Prof. Murray V. Johnston of the University of Delaware. Prof. Johnston and his research group will develop and employ laser-based mass spectrometry methods to study the role of amines in the nucleation and growth of atmospheric aerosols. The study will elucidate reaction mechanisms and yield fundamental rate parameters necessary to accurately represent new aerosol particle formation and growth in atmospheric models. New particle formation events in the atmosphere is a global phenomenon that is thought to contribute substantially to the concentration of cloud condensation nuclei, thereby influencing precipitation patterns and Earth's energy balance. Prof. Johnston's study to elucidate the impact of amines on aerosol particle formation could lead to significant changes in atmospheric models that currently may underestimate the concentration and composition of aerosol particles in the atmosphere. The study will provide excellent training opportunities to undergraduate and graduate students in an area of research of great societal importance.

化学系的环境化学科学（ECS）计划将支持特拉华州大学的Murray V.约翰斯顿教授的研究计划。约翰斯顿教授和他的研究小组将开发和采用基于激光的质谱方法来研究胺在大气气溶胶成核和生长中的作用。这项研究将阐明反应机制，并产生必要的基本速率参数，以准确地代表新的气溶胶粒子的形成和增长的大气模型。大气中新粒子形成事件是一种全球现象，被认为对云凝结核的集中有很大贡献，从而影响降水模式和地球的能量平衡。约翰斯顿教授阐明胺对气溶胶颗粒形成的影响的研究可能会导致大气模型发生重大变化，目前这些模型可能低估了大气中气溶胶颗粒的浓度和组成。该研究将为本科生和研究生在具有重大社会重要性的研究领域提供绝佳的培训机会。