Atmospheric Oxidation: Field and Laboratory Studies of OH, HO2, RO2, OH Reactivity, and Measurement of Ozone Production Sensitivity

羟基自由基（OH）自由基是大气中光解产生的主要大气“去污剂"或清除剂，对OH自由基的反应性的详细了解仍然是大气化学中具有挑战性的问题。 这项研究建立在成功的调查和早期奖项的主题之上，将使宾夕法尼亚州立大学的调查人员能够：i）参与计划的多研究者研究（Blodgett Forest，CA）的生物排放对OH和HOX化学的影响，ii）从事进一步的实验室研究，旨在了解意外的夜间（OH）反应性，iii）与用于确定空气中OH浓度的其他技术相比，继续验证和确认灵敏的激光诱导荧光（LIF）检测方法。这些活动的继续将进一步加深我们对大气氧化过程的理解，包括臭氧的产生和控制许多对流层空气污染物命运的因素。

The detailed understanding of the reactivity of the hydroxyl radical (OH) radical, the primary atmospheric ''detergent'' or scavenger species produced photolytically in the atmosphere, remains a challenging problem in atmospheric chemistry. This study builds on successful investigations and themes of an earlier award and will enable Penn State investigators to:i) participate in a planned multi-investigator studies (Blodgett Forest, CA) of the effects of biogenic emissions on OH and HOX chemistry,ii) engage in further laboratory studies directed to understanding an unexpected night time (OH) reactivity,iii) continue their verification and validation of a sensitive laser induced fluorescence (LIF) detection method compared to other techniques for determining the concentration of OH in air.The continuation of these activities will further our understanding of atmospheric oxidation processes in general, including ozone production and the factors controlling the fate of many tropospheric air pollutants.