Laboratory Measurements of the Hydroxyl Radical (OH)-Initiated Oxidation of Alpha and Beta-Pinene

羟基自由基 (OH) 引发的 α 和 β-蒎烯氧化的实验室测量

• 批准号: 0106705
• 负责人: Ronald Hites
• 金额: $ 44.25万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-15 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0106705&HistoricalAwards=false
• 关键词: Laboratory; Measurements; Hydroxyl; Radical; OH

This project consists of laboratory studies of the kinetics and mechanism of the reaction of OH (hydroxyl radical) with pinenes, which are important biogenic hydrocarbons. In the atmosphere, these reactions lead to the production of numerous products, including radicals, however, the details of the mechanism are not well understood. Relative rate measurements will be carried out in a small quartz chamber with direct sampling of the gas mixture and mass spectrometric detection as well as GC/MS (gas chromatography/mass spectrometry) analysis of compounds with low volatility. These studies can be carried out at various temperatures. Studies of the reactions of some of the reaction products (pinonaldehyde, nopinone) themselves with OH are also planned. Absolute measurements of the rate coefficients will be carried out using the turbulent flow technique. The results of this study will improve our knowledge of the details of the oxidation mechanisms and will be valuable in determining the efficiency of these biogenic hydrocarbons in the production of photochemical smog.

该项目包括实验室研究OH（羟基自由基）与重要的生物烃----蒎烯反应的动力学和机理。在大气中，这些反应导致产生许多产物，包括自由基，然而，机制的细节还不清楚。相对速率测量将在小型石英室中进行，对气体混合物进行直接采样，并进行质谱检测以及低挥发性化合物的GC/MS（气相色谱/质谱）分析。这些研究可以在不同的温度下进行。一些反应产物（pinonaldehyde，nopinone）本身与OH的反应的研究也计划。速率系数的绝对测量将使用湍流技术进行。这项研究的结果将提高我们的知识的氧化机制的细节，将是有价值的，在确定这些生物源的碳氢化合物在光化学烟雾的生产效率。