Mechanisms of Formation of Atmospheric Nitrous Oxide

通过这个奖项，无机，生物无机， 有机化学与大气化学 计划为跨学科项目提供支持， 大气中一氧化二氮的来源 这项工作将由 威廉·C博士Trogler和Mark H.蒂蒙斯 美国加州大学旧金山分校化学系 迪亚哥 他们将研究分解的机制， 硝酸铵，羟胺与硝酸的反应 一氧化二氮和其他反应， 制作。 气溶胶和颗粒物对这些的影响 过程也将进行调查。 阐明的手段 反应机制，以及连接一氧化二氮 产生的各种反应，一氧化二氮在 在大气中，将是氮和氧的同位素标记。 %%% 大气中一氧化二氮的浓度 近年来有所增加，但这种增加的来源 并没有得到很好的理解。 特罗格勒和蒂蒙斯会调查 各种反应产生一氧化二氮的细节 模拟潜在的环境来源。 特罗格勒 反应机理、催化和 气相动力学和质量 光谱分析将有助于这种合作努力， 在相关条件下考察这些反应。 二氮 氧化物是一种温室气体， 大气臭氧平衡

By means of this award, the Inorganic, Bioninorganic, and Organometallic Chemistry Program and the Atmospheric Chemistry Program provide support for an interdisciplinary project on sources of atmospheric nitrous oxide. The work will be carried out by Dr. William C. Trogler and Dr. Mark H. Thiemens of the Chemistry Department of the University of California at San Diego. They will examine the mechanism of decomposition of ammonium nitrate, the reaction of hydroxylamine and nitric oxide, and other reactions by which nitrous oxide might be produced. The influence of aerosols and particulates on these processes will also be investigated. The means of elucidating the reaction mechanism, as well as linking the nitrous oxide produced by various reactions to nitrous oxide in the atmosphere, will be isotopic labeling of nitrogen and oxygen. %%% The concentration of atmospheric nitrous oxide has been increasing in recent years, but the sources of this increase are not well understood. Trogler and Thiemens will investigate the details of nitrous oxide production from various reactions that model potential environmental sources. Trogler's expertise in reaction mechanisms, catalysis, and photochemistry, and Thiemens' in gas phase kinetics and mass spectrometry will be helpful in this collaborative effort to examine these reactions under relevant conditions. Nitrous oxide is a greenhouse gas and is also involved in the atmospheric ozone balance.