U.S.-U.K. Cooperative Research: Atmospheric Oxidation of Dimethyl Sulphide

美英合作研究：二甲基硫醚的大气氧化

• 批准号: 8913446
• 负责人: Anthony Hynes
• 金额: $ 0.88万
• 依托单位: Georgia Tech Research Corporation - GA Tech Research Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-12-01 至 1993-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8913446&HistoricalAwards=false
• 关键词: U.S.; U.K.; Cooperative; Research; Atmospheric

This award will support collaborative research in atmospheric chemistry between Dr. Anthony J. Hynes, Georgia Institute of Technology and Dr. D.L. Bauch, School of Chemistry, University of Leeds, England. The objective of the proposed research is to study the kinetics and mechanisms of the atmospheric oxidation of dimethyl sulfide using flow discharge techniques. Dimethyl sulfide is known to be emitted by marine organisms and has been suggested to be a precursor to aerosol and cloud formation in marine environments; it is therefore of particular interest for the study of global climate. Experiments will utilize a discharge flow apparatus coupled with laser induced fluorescence and mass spectrometric detection of reactive intermediates and reaction products. Use of calibrated laser induced fluorescence and simultaneous observation of reactant loss and product formation should allow quantitative yields of methyl sulfide radical and sulfur dioxide from the hydroxyl radical initiated oxidation of dimethyl sulfide to be established. Attempts will be made to establish the feasibility of mass spectrometric sampling for the detection of stable reaction products. The project will benefit from the expertise of Dr. Hynes in the development of laser diagnostic techniques in molecular beams, atmospheric sampling and atmospheric kinetics. The British collaborator Dr. Bauch has many years of experience in the application of discharge flow technique to the study of oxygen and hydroxyl radical reactions. The results of this research should contribute to the understanding of the sulphur cycle in global atmospheric chemistry.

该奖项将支持佐治亚理工学院与D.L. Anthony J. Hynes博士之间的大气化学合作研究。 Bauch，英国利兹大学化学学院。 拟议的研究的目的是研究使用流量排放技术研究二甲基硫化物大气氧化的动力学和机制。 已知二甲基硫化物是由海洋生物发出的，并被认为是海洋环境中气溶胶和云形成的先驱。因此，这对于全球气候研究特别感兴趣。 实验将利用与激光诱导的荧光和反应性中间体和反应产物的质谱检测结合的排放流动器。 使用校准激光诱导的荧光并同时观察反应物损失和产物形成应允许从羟基自由基二氧化二氧化二氧化二乙基硫化物的氧化产量定量产率。 将尝试建立质谱采样的可行性，以检测稳定的反应产物。 该项目将受益于Hynes博士在开发分子束，大气采样和大气动力学中的激光诊断技术方面的专业知识。 英国合作者Bauch博士在将排放流技术应用于氧气和羟基自由基反应的研究中拥有多年的经验。 这项研究的结果应有助于理解全球大气化学的硫周期。