SGER: Investigation of Electrospray Mass Spectrometry (ES/MS/MS) for Chemical Analysis of Polar Ice Cores

这项建议是探索电喷雾质谱仪(ES/MS/MS)用于极地冰芯分析的一项要求。该技术能够快速、灵敏地检测和分析水溶液中多种有机和无机分析物。这项技术有可能1)将冰芯分析扩展到广泛的离子和极性有机分析物，这可能为空气质量来源、大气反应性和生物地球化学活动提供新的示踪剂，2)极大地提高现有主要和次要离子分析的速度、灵敏度和准确性。这项工作的最终目标是在冰芯中识别对环境变化敏感的新化学物质，如生物质燃烧产物、土壤类型和海洋有机物。ES/MS/MS仪器将安置在地球系统科学系。作为地球和环境科学计划的一部分，它将被用于研究、研究生教育和本科生教育。

This proposal is a request to explore the use of electrospray mass spectrometry(ES/MS/MS) to the analysis of polar ice cores. This technique is capable of rapid,sensitive detection and speciation of a wide range of organic and inorganic analytes inaqueous solution. The technique has the potential to 1) expand ice core analysis to awide range of ionic and polar organic analytes, which can potentially provide new tracersfor air mass origin, atmospheric reactivity, and biogeochemical activity, and 2) greatlyimprove the speed, sensitivity, and accuracy of existing analyses of major and minor ions.The ultimate goal of this effort is to identify new chemicals in ice cores that are sensitiveto environmental change, such as products of biomass burning, soil types, and marineorganics. The ES/MS/MS instrument will be housed in the Department of Earth SystemScience. It will be utilized in research, in graduate education, and in undergraduateeducation as part of the Earth and Environmental Sciences program.