Acquisition of an isotope ratio mass spectrometer for continuous flow analyses of carbon, hydrogen, and chlorine isotopic compositions of organic compounds

购买同位素比质谱仪，用于有机化合物的碳、氢和氯同位素组成的连续流动分析

• 批准号: 0318458
• 负责人: Fabien Kenig
• 金额: $ 7.2万
• 依托单位: University of Illinois at Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0318458&HistoricalAwards=false
• 关键词: Acquisition; isotope; ratio; mass; spectrometer

0318458KenigThis grant supports acquisition of a new stable isotope ratio mass spectrometer (SIRMS) in the Environmental Geochemistry Isotope Laboratory, Department of Earth and Environmental Sciences, University of Illinois at Chicago that would be coupled with an existing gas chromatograph and high temperature pyrolysis system for compound specific stable isotopic analysis (CSIA) of carbon, hydrogen and chlorine in organic matter (OM) as tracers of microbial geochemical pathways and identification of specific sources of complex mixtures of organic matter. CSIA has great potential as a highly sensitive proxy of paleoenvironment conditions at the time of OM deposition and as a method of unraveling the geochemical history (i.e., redox conditions) experienced by the OM since deposition. Areas of research that will benefit from the new SIRMS include paleoceanographic proxy studies of the water column chemistry of Mesozoic seas, paleoclimate/paleoecologic investigations of perennially ice-covered lakes and the Dry Valleys of Antarctica, and environmental studies of the fate and transport of PCBs in groundwater.***

0318458 Kenig该赠款支持在芝加哥伊利诺伊大学地球与环境科学系环境地球化学同位素实验室购买一台新的稳定同位素比质谱仪（SIRMS），该质谱仪将与现有的气相色谱仪和高温热解系统相结合，用于碳的化合物特定稳定同位素分析（CSIA），氢和氯在有机物（OM）作为微生物地球化学途径的示踪剂和有机物的复杂混合物的特定来源的识别。 CSIA作为OM沉积时古环境条件的高度敏感的替代物和作为揭示地球化学历史（即，氧化还原条件）。 将受益于新的SIRMS的研究领域包括中生代海洋水柱化学的古海洋学代用品研究、南极洲常年冰封湖泊和干谷的古气候/古生态学调查，以及地下水中多氯联苯的归宿和迁移的环境研究。