MRI: Acquisition of a High Resolution Inductively Coupled Plasma Mass Spectrometer and Laser Ablation System

学术成就：PI正在申请资金以获得准分子激光烧蚀电感耦合等离子体质谱仪。 Element XR HR ICP-MS将取代当前系统，由于不再生产关键更换部件，该系统已变得无法支持。 激光消融（LA）系统（New Wave UP 193 FX）将是该机构的新采购产品（即，不是替代品）。LA以高空间和深度分辨率原位烧蚀固体样品体积，并将样品引入各种分析仪器，包括HR ICP-MS。拟议仪器将支持的研究工作包括：碰撞造山带和会聚边缘的机制和增长与衰退速率（地质年代学/热年代学）;过去的海洋温度变化（新生代古海洋学）;壳幔演化（岩石学/地球化学）;鱼类的地理变异和种群动态（耳石微化学）;以及铅和锰在脊椎动物中的暴露途径和神经毒性作用（环境毒理学）。拟议的仪器将被纳入现有的血浆分析设施，提供培训和快速过渡到无人协助的用户率。更广泛的影响：该提案概述了一个强有力的承诺，通过各种努力，包括开发一个LA-ICP-MS短期课程，列入拟议的仪器在现有的课程，涉及仪器分析，并维护用户组的电子邮件列表服务于仪器的需求。该提案还概述了UCSC为促进代表性不足的群体的参与所做的努力，并预计拟议工具的存在和使用将加强这些努力。

Intellectual Merit:The PIs are requesting funds to acquire an excimer laser ablation inductively coupled plasma mass spectrometer. The Element XR HR ICP-MS will replace the current system, which has become unsupportable as key replacement parts are no longer manufactured. The laser ablation (LA) system (New Wave UP193FX) will be a new acquisition for the institution (i.e., not a replacement). The LA ablates solid sample volumes in situ with high spatial and depth resolution, and introduces the sample into a variety of analytical instruments, including the HR ICP-MS. The research efforts that would be supported by the proposed instrumentation include: mechanisms and rate of growth and decay of collisional orogens and convergent margins (geochronology/thermochronology); past ocean temperature change (Cenozoic paleoceanography); crust and mantle evolution (petrology/geochemistry); geographic variation and population dynamics of fish (otolith microchemistry); and exposure pathways and neurotoxic actions of lead and manganese in vertebrates (environmental toxicology). The proposed instrumentation will be incorporated into the existing Plasma Analytical Facility, which provides training and rapid transition to unassisted user rates.Broader Impacts:The proposal outlines a strong commitment to outreach through a variety of efforts, including the development of a LA-ICP-MS short course, inclusion of the proposed instrumentation in existing courses involving instrument analyses, and the maintenance of user group e-mail list serves for instrumentation needs. The proposal also outlines the efforts of UCSC to promote participation of under-represented groups and anticipates the presence and use of the proposed instrumentation to enhance these efforts.