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

在此提案中，pi要求30万美元用于技术支持，以支付新雇用的全职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基金购买的新的ICP-MS。该技术人员将履行几项关键职责。显然，他/她将在保持仪器运行和良好维护方面发挥重要作用。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因素）是方法开发。该仪器将被纳入一个多用户设施，并将是一个开放的访问和在成本充值模式下工作。这一要求是对征求意见的回应，因为新员工的部分资金将由大学提供，在拟议的资助期限届满后，将由大学全额资助，充值和资助支持。pi在NSF-EAR和OCE项目中有很强的研究足迹。新的MC-ICP-MS与EAR-IF授予相关。一般的研究工作围绕着火山学、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，发展231Pa同位素稀释分析以阐明生物沉积物地质年代学，重建夏威夷和其他地区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，以及热液流体中的Ra同位素测量以代表岩石年龄和水岩交换过程。新的MC-ICP-MS将允许Sr， Nd， Pb和Hf同位素分析作为地球历史的代用物，然而，将现有的TIMS方法转换为更灵敏的激光烧蚀和湿化学ICP-MS分析需要大量的开发工作。这些同位素将作为物源示踪剂，用于阐明沉积、风化和古气候学。添加Os同位素将有助于阐明远洋碳酸盐和燧石层序。额外的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，Mg同位素分析将用于更好地了解海洋镁通过热液系统的循环。新的分析能力将使教师、学生和外部用户之间产生额外的协同效应。新技术人员将协助培训新用户？从而帮助生产明天？作者。该设施将支持多样化的研究人员和学生群体

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.***