Concentration, Distribution and Transport of Alkyl Nitrates in the Troposphere

氮化合物是最重要的化学物质之一， 参与复杂化学和光化学反应的物种 全球对流层的变化。 奇数的相互作用- 氮化合物与非甲烷烃和各种 自由基物种已被证明对 大气化学在局部、区域和全球尺度上的作用。 由于它们在大气化学中的核心作用， 对奇氮化合物循环的完整研究已经 建议作为全球对流层化学的一部分 程序. 硝酸烷基酯是大气中的光化学产物， 在下列反应性氧化物存在下的烃氧化 氮气 最近的测量烷基硝酸盐，这些 化合物可以构成总的 “干净”对流层中的活性氮。 因为他们的 在氮收支中的潜在贡献及其 氧化剂化学的重要性，详细信息是 需要了解的来源，组成，浓度 以及硝酸烷基酯在全球对流层中的变化。 的 这项研究的目的是准确地衡量相关的 硝酸烷基酯化合物在对流层，以估计 硝酸烷基酯对活性氮收支的贡献 物种在对流层，并调查了远程 将硝酸烷基酯运输到偏远海域。

Nitrogen compounds are among the most important chemical species involved in the complex chemical and photochemical processes in the global troposphere. Interactions of odd- nitrogen compounds with non-methane hydrocarbons and a variety of radical species have been shown to have a potential impact on atmospheric chemistry on local, regional, and global scales. Because of their central role in atmospheric chemistry, a complete study of the cycle of odd-nitrogen compounds has been recommended as part of an overall Global Tropospheric Chemistry Program. Alkyl nitrates are photochemical products of atmospheric hydrocarbon oxidation in the presence of reactive oxides of nitrogen. Recent measurements of alkyl nitrates that these compounds may constitute a significant fraction of the total reactive nitrogen in the "clean" troposphere. Because of their potential contribution in the nitrogen budget and their significance to oxidant chemistry, detailed information is required to understand the sources, composition, concentration and variability of alkyl nitrate in the global troposphere. The objectives of this research are to accurately measure relevant alkyl nitrate compounds in the troposphere, to estimate the contribution of alkyl nitrates to the budget of reactive nitrogen species in the troposphere, and to investigate the long-range transport of alkyl nitrates to remote marine areas.