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.

该研究计划为期两年，涉及开发一种新型光碎裂激光诱导荧光技术，用于研究大气条件下的过氧化氢（HO2）自由基动力学。 它建立在实验室动力学研究中高灵敏度检测羟基 (H2O) 自由基的能力之上。 单脉冲激光系统将用于光解 HO2，生成 OH 光碎片，然后通过激光诱导荧光进行检测。 激光闪光光解将用于产生HO2。 最初的工作将集中于确定最佳的 HO 检测方案，以最大限度地提高灵敏度和最小化干扰。 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的反应动力学。