Technician Support for a new multi-collector ICP-MS facility for Terrestrial and Marine Geochemical Research

0841797Rubin 在此提案中，PI 请求 30 万美元的技术支持，以支付新聘用的全职 ICP-MS 设施技术人员的部分工资。该技术人员将支持通过 GEO/EAR 和 GEO/OCE 资金购买的新 ICP-MS。技术人员将承担多项关键职责。显然，他/她将在保持仪器运行和维护良好方面发挥重要作用。此外，技术人员将负责学生的培训和整合。另一个主要职责（也是雇用博士级申请人的驱动力）是方法开发。该仪器将被纳入多用户设施中，并且将是开放式的，并在成本充值模式下工作。这一请求是对招标的回应，因为新聘人员将通过大学获得部分资助，在拟议资助期限结束后，将通过呃、充值和赠款支持获得全额资助。 PI 在 NSF-EAR 和 OCE 项目中拥有强大的研究足迹。新的 MC-ICP-MS 与 EAR-IF 资助相关。一般研究工作围绕火山学、地幔地球化学、环境科学和海洋研究的 U 系列、Pb、Nd 和 Sr 同位素测量。应用包括将火山条件与喷发方式联系起来的 U 系列测量、开发 231Pa 同位素稀释分析以阐明生物沉积物地质年代学、重建夏威夷和其他区域海平面历史并确定弹药污染物生物地球化学的 U 系列测量，以及热液中的 Ra 同位素测量，以代理岩石年龄和水-岩石交换过程。新的 MC-ICP-MS 将允许 Sr、Nd、Pb 和 Hf 同位素分析作为地球历史代理 - 然而，需要大量的开发工作才能将现有的 TIMS 方法转换为更灵敏的激光烧蚀和湿化学 ICP-MS 分析。这些同位素将作为来源示踪剂，用于阐明沉积物、风化和古气候学。添加锇同位素将有助于阐明远洋碳酸盐和燧石序列。其他工作将包括跟踪玄武岩熔岩挥发和凝结过程中的火山和人为同位素 - Se、Cd、Tl、Te、Zn 和 Cu 同位素分馏将作为分析代理。最后，镁同位素分析将用于更好地了解海洋热液系统中的镁循环。新的分析功能将使教师、学生和外部用户之间产生额外的协同作用。新技术人员会协助培训新用户吗？从而帮助培养明天的地球科学家。该设施将为多元化的研究人员和学生群体提供支持。***

0841797RubinIn this proposal, the PIs request $300K for technician support to cover partial salary for a new hire full-time ICP-MS facility technician. This technician will support a new ICP-MS purchased through GEO/EAR and GEO/OCE funds. The technician will serve several key duties. He/She will obviously have a major roll in keeping the instrument running and well maintained. In addition, the technician will be responsible for student training and integration. Another major responsibility (and a driver for hiring a PhD-level applicant) is in method development. The instrument will be incorporated into a multi-user facility and will be an open-access and work under a cost recharge model. This request is responsive to the solicitation in that the new hire will be partially-funded through the University and after the term of the proposed grant, will be fully funded through UH, recharge and grant support. The PIs have a strong research footprint in NSF-EAR and OCE projects. The new MC-ICP-MS was associated with a EAR-IF grant. General research efforts revolve around U-series, Pb, Nd, and Sr isotope measurement s for volcanology, mantle geochemistry, environmental science and marine research. Applications include U-series measurements to link volcanic conditions to eruption style, development of 231Pa isotope dilution analysis to elucidate biogenic sediment geochronology, U-series measurements to reconstruct Hawaiian and other regional sea level histories and determine munitions contaminant biogeochemistry, and Ra isotope measurements in hydrothermal fluids in order to proxy rock ages and water-rock exchange processes. The new MC-ICP-MS will allow Sr, Nd, Pb and Hf isotope analyses as Earth history proxies - however, much development work is needed to convert existing TIMS methodologies to more sensitive laser ablation and wet-chemical ICP-MS analyses. These isotopes will serve as provenance tracers and be used to elucidate deposits, weathering and paleoclimatology. Adding Os isotopes will help elucidate pelagic carbonate and chert sequences. Additional efforts will involve tracking volcanic and anthropogenic isotopes during basaltic lava volatilization and condensation - Se, Cd, Tl, Te, Zn and Cu isotope fractionation will serve as the analytical proxy. Finally, Mg isotope analysis will be used to better understand oceanic Mg cycling through hydrothermal systems. The new analytical capabilities will allow additional synergies amongst faculty, students and outside users. The new technician will assist in training new users ? thus helping to produce tomorrow?s geoscientists. The facility will support a diverse researcher and student population.***