Acquisition of a new stable isotope mass spectrometer

购置新型稳定同位素质谱仪

• 批准号: 0926503
• 负责人: Peter Swart
• 金额: $ 31.97万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-15 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0926503&HistoricalAwards=false
• 关键词: Acquisition; new; stable; isotope; mass

0926503SwartThis award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Granted funds will support acquisition of a new stable isotope ratio mass spectrometer (SIRMS - Thermo MAT 253) to replace an existing Finnigan-MAT 251 (vintage 1985) in the Department of Marine Geology and Geophysics at the Rosenstiel School of Marine & Atmospheric Sciences. The SIRMS will largely be dedicated to the analysis of stable isotopes carbon and oxygen in carbonates but also will be used for analysis of stable isotopes in natural waters and organics. The MAT 253, a large radius magnet, high voltage source instrument, also offers the capability to analyze isotopologues of carbon dioxide to investigate new proxies for paleothermometry. The PIs intend to explore this capability in the future. The new SIRMS will immediately support NSF funded research in paleoclimatology and paleoceanography including studies of Miocence sea level history based on the carbon isotopic composition of platform carbonates, high resolution studies of late Pleistocene tropical climate variability recorded with high fidelity in the varved sediments of the Cariaco Basin and studies of coral calcification rates in response to varying sea water pCO2.

该奖项是根据2009年《美国复苏和再投资法案》(公法111-5)资助的。赠款将用于购买一台新的稳定同位素比质谱仪(SIRMS-Thermo MAT 253)，以取代罗森斯蒂尔海洋与大气科学学院海洋地质和地球物理系现有的Finnigan-MAT 251(1985年款)。SIRMS将主要用于分析碳酸盐中的稳定同位素碳和氧，但也将用于分析天然水和有机物中的稳定同位素。MAT 253是一种大半径磁体高压源仪器，它还提供了分析二氧化碳同位素的能力，以研究古温度测量的新替代品。私人投资公司打算在未来探索这一能力。新的SIRMS将立即支持NSF资助的古气候学和古海洋学研究，包括基于台地碳酸盐碳同位素组成的中新世海平面历史研究，在Cariaco盆地各种沉积物中高保真记录的晚更新世热带气候变异性的高分辨率研究，以及珊瑚钙化率对不同海水二氧化碳分压的响应研究。