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

本项目包括OH（羟基自由基）与蒎烯反应的动力学和机理的实验室研究，蒎烯是重要的生物烃。在大气中，这些反应导致许多产物的产生，包括自由基，然而，机理的细节尚不清楚。相对速率测量将在一个小的石英室中进行，直接采样气体混合物，质谱检测以及GC/MS（气相色谱/质谱）分析低挥发性化合物。这些研究可以在不同的温度下进行。一些反应产物（蒎醛、诺蒎酮）本身与羟基的反应也计划进行研究。速率系数的绝对测量将采用紊流技术进行。这项研究的结果将提高我们对氧化机制细节的了解，并将对确定这些生物烃在光化学烟雾产生中的效率有价值。

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.