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Sulfur and Oxygen Isotopic Signatures for Sulfur Dioxide Oxidation Mechanisms

Sulfur and Oxygen Isotopic Signatures for Sulfur Dioxide Oxidation Mechanisms
二氧化硫氧化机制的硫和氧同位素特征
批准号:
0111714
负责人:
Mark Thiemens
金额:
$30.0万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2001
资助国家:
美国
项目状态:
已结题
起止时间:
2001-09-01 至 2005-02-28

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中文摘要
翻译
将进行实验室测量,以解决与大气过程相关的反应中的同位素效应,包括SO2(二氧化硫)的气相和固相氧化,硫化合物的表面催化氧化,以及硫化合物与NO2(二氧化氮)和NO3(硝酸根)的氧化。为了更好地理解PI和他的团队对大气硫酸盐和硝酸盐气溶胶样本进行的同位素分析(硫和氧),需要进行实验室研究。PI正在使用同位素数据来量化不同大气硫氧化途径的相对贡献。这对于理解气溶胶的化学性质及其对气候的影响至关重要。
英文摘要
Laboratory measurements will be carried out addressing isotope effects in reactions relevant to atmospheric processes, including gas and solution phase oxidation of SO2 (sulfur dioxide), surface catalyzed oxidation of sulfur compounds, and the oxidation of sulfur compounds with NO2 (nitrogen dioxide) and NO3 (nitrate radical). The laboratory studies are needed to better understand isotopic analysis (sulfur and oxygen) that the PI and his group have carried out on atmospheric sulfate and nitrate aerosol samples. The PI is using isotopic data to quantify the relative contributions of the different atmospheric sulfur oxidation pathways. This is of fundamental importance to understanding the chemistry of aerosols and their impact on climate.
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