Acquisition of a Gas-Source Isotope Ratio Mass Spectrometer (GS-IRMS) to upgrade the University of Alabama Geological Sciences Stable Isotope Laboratory

采购气源同位素比质谱仪 (GS-IRMS) 以升级阿拉巴马大学地质科学稳定同位素实验室

• 批准号: 0949303
• 负责人: C. Frederick Andrus
• 金额: $ 20万
• 依托单位: University of Alabama Tuscaloosa
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-01 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0949303&HistoricalAwards=false
• 关键词: Acquisition; Gas; Source; Isotope; Ratio

0949303AndrusThis award will enable the purchase of an isotope ratio mass spectrometer, an in-line continuous flow carbonate/CO2 extraction device, and ancillary equipment to couple the new instrumentation to existing devices. The major analytical requirements are carbon and oxygen isotope analysis in accretionary carbonates, like mollusks, brachiopods, corals, fish and speleothems. Deuterium and oxygen isotope ratios are also routinely analyzed in water samples. Other research focuses on nitrogen isotope variability in biominerals and organic sediments. Research foci are biomineralization, terrestrial and marine paleoclimate reconstructions, paleoecology, geoarchaeology, and collaborative efforts with anthropologists marine biologists. This grant will allow the facility to have two parallel IRMS set-ups - decreasing maintenance and repair and allowing higher data throughput. The PIs will also be able to analyze deuterium isotopes in continuous flow obviating off-line preparation for later dual-inlet measurement. The Alabama Stable Isotope Lab is currently directed by the co-PI. A full-time research technician is supported by the institution. Day-to-day maintenance is supported by PIs' research grants and user fees. Currently, income exceeds maintenance and expendables costs. The stable isotope lab is routinely used for graduate and undergraduate courses. Research courses for undergraduates also utilize stable isotope measurements (hands on). Undergraduates are routinely hired for hourly lab work and thus receive training. A second IRMS will allow enhanced student use. Several K-12 outreach programs currently use the facility. A McNair Scholar program exists for stimulating underrepresented student participation.***

0949303andrusthis Award将使同位素比率质谱仪，在线连续碳酸盐/二氧化碳提取设备以及辅助设备可以购买新的仪器与现有设备。主要的分析要求是碳和氧同位素分析，例如软体动物，腕足动物，珊瑚，鱼类和棘突。在水样中，还常规分析了氘和氧同位素比。其他研究的重点是生物矿物质和有机沉积物中的氮同位素变异性。研究焦点是生物矿化，陆地和海洋古气候重建，古生态学，地理考古学以及与人类学海洋生物学家的合作努力。该赠款将允许该设施具有两个平行的IRMS设置 - 减少维护和维修并允许更高的数据吞吐量。 PI还将能够分析连续流中的氘同位素，从而避免离线准备工作以进行以后的双进度测量。阿拉巴马州马stable同位素实验室目前由Co-Pi执导。该机构支持了一名全日制研究技术员。 PIS的研究赠款和用户费用支持日常维护。目前，收入超过维护和消耗成本。稳定的同位素实验室通常用于研究生和本科课程。本科生的研究课程还利用稳定的同位素测量（手中）。本科生通常会雇用小时实验室工作，从而接受培训。第二个IRM将允许增强学生使用。目前有一些K-12外展计划使用该设施。 McNair Scholar计划存在用于刺激代表性不足的学生参与的计划。***