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

基本信息

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

项目摘要

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，以全面地表征硫酸铵气溶胶乙二醇的条件，鉴定在快速摄取条件下气溶胶中形成的反应产物以及确定气相或气溶胶相反应是否产品主要有助于二级有机气溶胶（SOA）产量。虽然先前已经进行了有关批量样品的类似实验室研究，但此处提出的工作是探索性的，因为它是第一个用分子细节进行研究的研究之一，并且从机械机械上讲，这是气溶胶和处理的小型高挥发性化合物的途径之一要形成高分子重量，低挥发性化合物。结果不仅将提供对从乙二醛建模的建模SOA形成至关重要的信息，而且还可以提供有关SOA形成和衰老的一般问题的新观点。这项探索性研究与影响气候变化的因素（气溶胶辐射强迫）有关和人类健康（可呼吸颗粒），这会影响整个社会。这项研究将吸引学生进行教学，这是一个多学科小组的一部分，该小组收集了捕捉大气化学过程复杂性所需的广泛数据集类型。学生将有机会在更广泛的数据集的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。