Development of a Laser Photofragmentation-Laser Induced Fluorescence Technique for the Study of Hydroperoxyl Radical Kinetics

开发用于氢过氧自由基动力学研究的激光光碎裂-激光诱导荧光技术

• 批准号: 9215106
• 负责人: Anthony Hynes
• 金额: $ 17.07万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-05-01 至 1996-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9215106&HistoricalAwards=false
• 关键词: Development; Laser; Photofragmentation; Induced; Fluorescence

This research program is two years in duration and involves the development of a novel photofragmentation-laser induced fluorescence technique for the study of hydroperoxyl (HO2) radical kinetics under atmospheric conditions. It builds on a demonstrated capability to detect hydroxyl (HO) radicals with high sensitivity in laboratory kinetic studies. A single pulsed laser system will be used to photodissociate HO2, generating OH photofragments which will then be detected by laser induced fluorescence. Laser flash photolysis will be used to generate HO2. Initial work will focus on determining the optimal HO detection scheme to maximize sensitivity and minimis interferences. Four potential HO2 production schemes will be used to study the kinetics of the reaction of the hydroperoxyl radical with nitric oxide.

该研究计划的持续时间为两年，涉及在大气条件下进行水力氧基（HO2）自由基动力学研究的新型光碎片激光诱导荧光技术的发展。 它建立在检测实验室动力学研究中具有高灵敏度的羟基（HO）自由基的能力上。 单个脉冲激光系统将用于光解离HO2，产生OH光碎片，然后通过激光诱导的荧光检测。 激光闪光光解将用于生成HO2。 最初的工作将集中于确定最佳HO检测方案，以最大程度地提高灵敏度和最小的干扰。 四种潜在的HO2生产方案将用于研究氢过氧自由基与一氧化氮反应的动力学。