Acquisition of a stable isotope mass spectrometer for Earth science and ecological research

在这个提案中，PIs要求~ 376K美元购买一个连续流同位素比质谱仪。需要的是具有H/D功能的Thermo Delta V+或GV isprime。仪器将配备气体、水和碳酸盐消化处理能力。元素分析仪将允许大量的碳，氮和硫同位素分析。该系统还将配备TC-EA热解装置，可进行D/H、水和磷酸盐氧同位素分析。由于外设的数量和类型，完成的系统在样品分析的类型、数量和矩阵方面将非常灵活。新系统将被安置在北京州立大学地球科学系。最近的装修（约50万美元）提供了充足的空间和电力资源。PI （Kohn）将是仪器的整体管理员，而日常操作将是技术人员。年代的责任。技术人员将培训新用户，维护和操作仪器。计划将由PI和技术员完成。这项技术将由该大学提供一半的资金。将评估所有用户的报酬（每个样品约10- 20美元），优先考虑资助的样品分析。需要大量监督、准备或使用仪器时间的样品将收取更高的费用。pi将使用该仪器进行各种科学调查研究。广泛的科学重点包括古气候学和古生态学。化石骨骼和牙齿被分析为在气候和降雨动态变化的地区降水的代理。这些测量与其他地球化学指标相结合，以估计山的海拔。同位素也被用来了解始新世-渐新世的转变，利用当地水同位素比率与骨骼和牙齿记录之间的差异相关性。骨骼和牙齿的同位素也将用于推断更新世哺乳动物的饮食模式。更新世古人类生态学也将根据古气候学进行评估。A coPI将使用稳定的O和H同位素作为径流、降水和集水区动态（输入、流出、停留时间等）的示踪剂。利用放射性成因同位素和稳定同位素生物地层学对古生代古气候进行评价。在其他工作中，稳定同位素将用于了解陆地栖息地的营养关系。在上述主题的基础上，提出了若干未来的研究方向。学生培训将从高中到博士研究生。该仪器将通过研讨会和实验室参观纳入现有的外联方案。PI最近因将本科生纳入实验室工作而获得了年度本科生研究导师奖。该仪器将被纳入教学课程，研究成果将通过文献和合作努力传播

0842367KohnIn this proposal, the PIs request ~$376K to purchase a continuous flow isotope ratio mass spectrometer. Requested is either a Thermo Delta V+ or GV IsoPrime with H/D capabilities. Instruments will be fitted with gas, water, and carbonate digestion handling capabilities. An elemental analyzer will allow bulk carbon, nitrogen and sulfur isotope analyses. The system will also be fitted with a TC-EA pyrolysis unit allowing D/H, and water and phosphate oxygen isotope analysis. Due to the number and type of peripherals, the finished system will be extremely flexible in the type, number and matrix of sample analyses possible. The new system will be housed in the Department of Geosciences at BSU. Recent renovations (~$500K) have provided ample space and power resources. The PI (Kohn) will be the overall instrument administrator while day-to-day operation will be a technician?s responsibility. The technician will train new users, maintain, and operate the instrument. Scheduling will be done by the PI and technician. The tech will be funded ½ time by the University. Remuneration (~$10-$20 per sample) will be assessed for all users with priority given to funded sample analyses. Higher fees will be charged for samples requiring extensive oversight, preparation or instrument time. The PIs will use this instrument for research in a diverse array of scientific investigations. Broad scientific thrusts include paleoclimatology and paleoecology ? fossil bone and teeth are analyzed as a proxy for precipitation in regions with varying climate and rain dynamics. These measurements are coupled with other geochemical proxies in order to estimate mountain elevations. Isotopes are also used to understand the Eocene-Oligocene transition using the differential correlation between local water isotope ratios and bone and teeth records. Bone and teeth isotopes will also be used to infer mammalian dietary patterns in the Pleistocene. Pleistocene hominid ecology will also be assessed in terms of paleoclimatology. A coPI will use stable O and H isotopes as tracers for streamflow, precipitation, and catchments dynamics (inputs, outflows, residence time, etc). Paleozoic paleoclimate will be assessed using radiogenic isotopes and stable isotope biostratigraphy. In other work, stable isotopes will be used to understand trophic relationships in terrestrial habitats. A number of future research directions are presented which build on and expand themes presented above. Student training will span high school through PhD graduate students. This instrument will be incorporated into existing outreach programs and through seminars and laboratory tours. The PI recently received an Undergraduate Research Mentor of the Year award for incorporating undergraduates in laboratory efforts. The instrumentation will be incorporated into teaching curricula and research results will be disseminated through the literature and through collaborative efforts.***