Acquisition of a new noble gas mass spectrometer and extraction system for the University of Michigan

为密歇根大学采购新型惰性气体质谱仪和萃取系统

• 批准号: 1049822
• 负责人: M. Clara Castro
• 金额: $ 57.7万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-07-15 至 2018-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1049822&HistoricalAwards=false
• 关键词: Acquisition; new; noble; gas; mass; Acquisition; new; noble; gas; mass

This award will support the acquisition of a new noble gas mass spectrometer and construction of two new extraction lines ? one for crustal fluids and one for rocks and minerals in the Department of Earth and Environmental Sciences at the University of Michigan. Current equipment at the University of Michigan is old and is now taking a toll in terms of measurement efficiency as well as its ability to reach greater levels of accuracy made possible with more modern equipment. As the PI and co-PIs?s research interests have also expanded, the current MAP215 and extraction system have been pressed into service analyzing samples that are far more challenging than the originally planned freshwater samples. Pursuing new directions of research requires new and more robust extraction and purification noble gas lines as well as a new, more capable mass spectrometer which will enable the analysis of a wider variety of samples. The intellectual achievements made possible through the acquisition of a new mass spectrometer as well as the construction of two new extraction systems are multiple. For example, it will allow us to conduct routine studies of noble gases in old fluids in cratonic regions to further investigate their potential in holding and preserving solar noble gas signatures. It will also lead to an improved understanding of noble gas behavior in the unsaturated zone and thus, improved noble gas temperature models and more accurate paleoclimate reconstructions in continental areas. Acquisition of this new equipment will also lead to a better understanding of noble gases behavior in ice and glaciers allowing us to place constraints in the temporal evolution of covered ice lakes (e.g., in Antarctica) and thus, on the past climate in the region. Furthermore, analyses of noble gas isotopes in mantle rocks will allow new insights into mantle geochemistry. Overall, the improved precision and enhanced output resulting from this award will have a major positive impact on multiple fields, from Mantle Geochemistry to Paleoclimatology, Hydrogeology and the Environment.

该奖项将支持收购新的贵重气体质谱仪并建造两条新的提取线？一种用于地壳液体，一种用于密歇根大学地球与环境科学系的岩石和矿物质。密歇根大学的当前设备很古老，现在正在对测量效率以及其达到更高水平的能力造成损失，从而使更现代的设备成为可能。随着PI和Co-Pis的研究兴趣也已经扩大，当前的MAP215和提取系统已被迫分析样品，这些样本比最初计划的淡水样本更具挑战性。追求新的研究方向需要新的，更强大的提取和纯化贵重气管，以及一个新的，功能更强大的质谱仪，这将能够分析各种样本。通过获得新的质谱仪以及两个新提取系统的构建，智力成就使得成为可能。例如，这将使我们能够对克拉通地区旧流体中贵重气体进行常规研究，以进一步研究其在持有和保留太阳能贵重气体特征的潜力。这还将导致对不饱和区域中贵重气体行为的了解，因此，大陆地区的贵族气温模型改善了，更准确的古气候重建。获取这种新设备还将更好地理解冰和冰川中的贵重气体行为，从而使我们能够在覆盖的冰湖（例如，在南极）的时间演变中放置约束，因此可以在该地区的过去气候中放置约束。此外，对地幔岩石中贵重气体同位素的分析将允许对地幔地球化学的新见解。 总体而言，从地幔地球化学到古气候，水文地质学和环境，该奖项的提高精度和提高的产出将对多个领域产生重大积极影响。