Ammonia - Organic Chemistry and Secondary Organic Aerosol Yield in the Troposphere

该项目解决了氨和有机酸之间的气相反应是否可以通过形成氨基有机化合物导致二次有机气溶胶（SOA）的增强这一重要问题。将进行一系列实验室实验，在不同温度和相对湿度条件下测量和表征各种大气相关碳氢化合物在氨存在下的SOA形成速率和机制。这项探索性研究可能会潜在地解决一些重要的突出问题，这些问题涉及SOA形成途径，导致观察到的细颗粒物质量浓度——随着美国环境保护局颁布国家细颗粒物环境空气质量标准，这一点尤为重要。教育部分支持一名博士后研究员、一名研究生和两名本科生。

This project addresses the important question of whether gas phase reactions between ammonia and organic acids can lead to enhanced formation of secondary organic aerosol (SOA) through the formation of amino-organic compounds. A series of laboratory experiments will be performed to measure and characterize - under differing temperature and relative humidity regimes - SOA formation rate and mechanism in the presence of ammonia for a variety of atmospherically relevant hydrocarbons. This exploratory study could potentially reconcile some important outstanding issues with respect to SOA formation pathways leading to observed fine particulate mass concentrations - of especially high relevance as the U.S. Environmental Protection Agency promulgates national ambient air quality standards for fine particulate matter. The educational component supports a postdoctoral researcher, graduate student and two undergraduates at the host institution.