Ozone Reaction Kinetics and Analytical Mass Spectrometry of Multi-Layer Organic Particles

该项目的目的是提高对大气颗粒的非均相化学动力学的理解。P.I.s将研究实验室生成的大气颗粒，这些颗粒由包覆有有机层的元素碳芯组成，并确定臭氧层中化学反应的动力学。研究的具体目标是：(1)生成由元素碳芯与有机组成的颗粒；(2)确定臭氧层内反应的化学动力学，这取决于定性的层状特征，如厚度和化学类型；(3)量化各层之间的相互作用以及臭氧反应动力学与相对湿度的关系。(4)研究气溶胶质谱仪作为一种定性和定量分析仪器对这类有机颗粒的响应。这项工作的更广泛影响将是提高对大气中对人类健康、气候变化和空气质量至关重要的异质过程的理解。该项目还将促进国际合作，并为研究生培训提供机会。

The objective of this project is to improve understanding of the heterogeneous chemical kinetics of atmospheric particles. The P.I.s will study laboratory-generated atmospheric particles composed of cores of elemental carbon coated with organic layers and determine the chemical kinetics of reactions in the layers with ozone. The specific goals of the research are: (1) to generate particles composed of cores of elemental carbon with organic, (2) to determine the chemical kinetics of reactions in the layers with ozone, as dependent on the qualitative layering characteristics, such as thickness and chemical type, (3) to quantify interactions of the layers and the ozone reaction kinetics with relative humidity, and (4) to investigate the response of the aerosol mass spectrometer as a qualitative and quantitative analytical instrument for these types of organic particles. The broader impacts of this work will be an improved understanding of heterogeneous processes in the atmosphere that are important for human health, climate change, and air quality. This project will also foster international collaborations and provide opportunities for graduate training.