Acquisition of an Isotope Ratio Mass Spectrometer for Analyses of Aquatic, Geologic, and Atmospheric Sciences

购买同位素比质谱仪用于水生、地质和大气科学分析

• 批准号: 9601501
• 负责人: J Kirk Cochran
• 金额: $ 21.52万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-08-15 至 2000-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9601501&HistoricalAwards=false
• 关键词: Acquisition; Isotope; Ratio; Mass; Spectrometer

This project consists of the acquisition of an isotope ratio mass spectrometer (IRMS) and sample preparation equipment for stable isotopic analyses of atmospheric, marine, geologic, and groundwater samples. The IRMS permits extremely precise measurements of stable isotope abundances (such as those of carbon, oxygen, nitrogen, sulfur, etc.) with respect to a chosen reference standard. Analysis of stable isotope ratios in various natural substances has numerous geophysical and ecological applications. The applicability of IRMS technology therefore crosses the boundaries among many of the major disciplines, including the geosciences, chemistry, biology, and physics. The principal uses of the SUNY Stony Brook IRMS facility will be to further strengthen Stony Brook's expertise in atmospheric chemistry, specifically with regard to oceanic, terrestrial, and atmospheric interactions, and to complement the institution's existing expertise in the marine and earth sciences. Isotope ratio mass spectrometry is an extremely valuable way to quantify the relative source strengths of trace gas species in the atmosphere and to use this information to evaluate the extent of anthropogenic influences on those species. There are also numerous applications where stable isotopes may be used as tracers of biological, chemical, or physical mechanisms, and the mass spectrometer facility will also permit the analyses of marine and groundwater samples (organic carbon, water, carbonates). Many Stony Brook faculty from several departments and institutes have interests in the stable isotopic composition of a variety of substances, including dissolved organic compounds, marine carbonates, carbonate rocks, and organic carbon in marine sediments. This IRMS facility will represent a major improvement to the general scientific research capability of SUY Stony Brook.

该项目包括获得同位素比率质谱仪（IRM）和样品制备设备，用于稳定的大气，海洋，地质和地下水样品的同位素分析。 IRMS允许对所选参考标准的稳定同位素丰度（例如碳，氧，氮，硫等）的稳定同位素丰度（例如碳，氧，氮，硫等）的极为精确的测量。分析各种天然物质中稳定的同位素比具有许多地球物理和生态应用。因此，IRMS技术的适用性跨越了许多主要学科的边界，包括地球科学，化学，生物学和物理学。 SUNY Stony Brook IRMS设施的主要用途将是进一步增强Stony Brook在大气化学方面的专业知识，特别是在海洋，陆地和大气相互作用方面，并补充该机构在海洋和地球科学中现有的专业知识。同位素比率质谱是量化大气中微量气体的相对源强度并使用此信息来评估人为影响对这些物种的程度的极为宝贵的方法。在许多应用中，稳定的同位素可以用作生物，化学或物理机制的示踪剂，质谱仪设施还可以允许对海洋和地下水样品（有机碳，水，碳酸盐）进行分析。来自多个部门和机构的许多石溪教师对各种物质的稳定同位素组成都有兴趣，包括溶解的有机化合物，海洋碳酸盐，碳酸盐岩和海洋沉积物中的有机碳。该IRMS设施将代表Suy Stony Brook的一般科学研究能力的重大改进。