EAGER: Analysis of Kinetics and Products of Glyoxal Uptake in the Presence of Hydroxyl Radicals (OH)

EAGER：羟基自由基 (OH) 存在下乙二醛吸收的动力学和产物分析

• 批准号: 1026667
• 负责人: Frank Keutsch
• 金额: $ 9.89万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-06-01 至 2011-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1026667&HistoricalAwards=false
• 关键词: EAGER; Analysis; Kinetics; Products; Glyoxal

Laboratory reaction chamber experiments will be undertaken for the comprehensive characterization of the conditions for fast uptake of glyoxal on ammonium sulfate aerosol, identification of the reaction products formed within the aerosol under conditions of fast uptake, and determination of whether gas-phase or aerosol phase reaction products primarily contribute to secondary organic aerosol (SOA) yields. Whereas analogous laboratory studies on bulk samples have been previously undertaken, the work proposed here is exploratory in that it is one of the first to investigate with molecular detail and mechanistically the pathways in which a small high-volatility compound is taken up by aerosol and processed to form high-molecular weight, low-volatility compounds. The results will not only provide information critical to modeling SOA formation from glyoxal, specifically, but also have the potential to lend fresh perspective on general questions about SOA formation and aging.This exploratory research is related to factors affecting climate change (aerosol radiative forcing) and human health (respirable particles), which affect society at large. The research will engage students in teaching and learning as part of a multi-disciplinary group gathering the type of expansive dataset necessary to capture the complexity of atmospheric chemical processes. The students will have the opportunity to analyze their own data in the context of broader datasets and to draw conclusions concerning both the scientific and societal implications of their work.

将进行实验室反应室实验，以全面表征硫酸铵气溶胶上乙二醛快速吸收的条件，确定在快速吸收条件下气溶胶内形成的反应产物，并确定气相或气溶胶相反应产物是否主要有助于二次有机气溶胶（SOA）产量。虽然类似的实验室研究散装样品已经进行，这里提出的工作是探索性的，因为它是第一个调查与分子细节和机械的途径，其中一个小的高挥发性化合物被气溶胶和加工形成高分子量，低挥发性化合物。研究结果不仅提供了重要的信息模拟SOA的形成乙二醛，特别是，但也有可能提供新的角度对SOA的形成和aging.This探索性研究的一般问题是影响气候变化的因素（气溶胶辐射强迫）和人类健康（可吸入颗粒物），影响社会。该研究将让学生参与教学和学习，作为多学科小组的一部分，收集捕获大气化学过程复杂性所需的扩展数据集类型。学生将有机会在更广泛的数据集背景下分析自己的数据，并得出有关其工作的科学和社会影响的结论。