Atmospheric Oxidation Mechanism of Isoprene

这项工作的目标是对异戊二烯的大气氧化化学进行详细的实验和理论分析。异戊二烯是植物排放到大气中的主要不饱和有机化合物。将对异戊二烯与氧和氮自由基的反应进行产物分析和动力学研究。这些实验结果将与这些相同反应的产率和速率的理论预测进行比较。还将研究氧和氮自由基与异戊二烯的竞争反应，并结合结果来发展对异戊二烯氧化反应的机理理解。通过这一奖项，有机和高分子化学项目以及大气化学项目支持了德克萨斯农工大学化学系的Simon W.North博士和Renyi Zhang博士的研究。诺斯和张博士将对异戊二烯的大气氧化化学进行详细研究。异戊二烯是植物排放到大气中的主要不饱和有机化合物。更好地了解异戊二烯如何与大气中的活性氧和氮物种相互作用，将有助于未来对以下方面的建模和预测：1)异戊二烯水平在臭氧形成中所起的作用；2)有机硝酸盐的长距离传输；以及3)大气中的碳循环。在这项工作的过程中培训的学生将获得环境、大气和有机化学方面的经验。

The objectives of this work involve a detailed experimental and theoretical analysis of the atmospheric oxidation chemistry of isoprene. Isoprene is the major unsaturated organic compound emitted into the atmosphere by vegetation. Product analysis and kinetic studies will be performed on reactions of isoprene with oxygen and nitrogen radicals. These experimental results will be compared to theoretical predictions of yields and rates for these same reactions. Oxygen and nitrogen radical competititve reactions with isoprene will also be studied and the combined results used to develop a mechanistic understanding of isoprene oxidation reactions. With this award, the Organic and Macromolecular Chemistry Program and the Atmospheric Chemistry Program are supporting the research of Dr. Simon W. North and Dr. Renyi Zhang of the Department of Chemistry at Texas A & M University. Drs. North and Zhang will work on a detailed study of the atmospheric oxidation chemistry of isoprene. Isoprene is the major unsaturated organic compound emitted into the atmosphere by vegetation. A better understanding of how isoprene interacts with reactive oxygen and nitrogen species in our atmosphere could help future efforts to model and predict: 1) the role isoprene levels play in ozone formation; 2) long range transport of organic nitrates; and 3) carbon cycling in the atmosphere. Students trained during the course of this work will gain experience in environmental, atmospheric and organic chemistry.