Acquisition of a Multi-Collector ICP-MS for Marine and Terrestrial Geochemical Research

0549618 Rubin该项目的目标是获得多接收器电感耦合等离子体质谱仪（MC-ICPMS）和后续方法开发，以实现夏威夷大学（UH）的跨学科地球化学研究。 地球、海洋和行星科学中的许多分析应用都需要这种仪器，或者通过这种仪器得到增强。 例如，MC-ICPMS非常适合于对由于等离子体源的高电离效率而不能通过固体源热电离质谱仪（TIMS）测量的元素进行同位素分析。此外，传统上由TIMS进行的同位素分析可以更快地进行，并且在许多情况下，MC-ICPMS可以减少样品量。UH MC-ICP-MS的初步计划是开发5种类型的分析能力，每种都有多种应用。其中包括锕系核素的同位素分析，以产生火山和沉积过程的高分辨率年表，火山气体和冷凝物的新的过渡金属和准金属分馏研究，以量化局部和全球规模的火山脱气事件，通过Mg同位素分析对海洋地壳-海水交换的质量平衡约束，用于岩石学研究的火成岩材料的Hf，Nd和Pb同位素分析，新仪器将成为索斯特（海洋与地球科学与技术学院）同位素实验室的一部分，该实验室目前拥有两个TIMS和一个辐射计数设施。该实验室被公认为在火山学、地幔地球化学、环境和海洋研究课题中应用U系列、Pb、Nd和Sr同位素的领导者。建立MC-ICP-MS能力将增强UH（EPSCOR和联邦认可的少数民族教育机构）的研究能力并使其多样化，并促进研究生和本科生的教育机会。索斯特的跨学科性质和MC-ICP-MS的广泛能力将允许新的研究领域和现有研究计划之间的交叉。此外，MC-ICP-MS将成为许多具有地方和整个太平洋盆地意义的调查的一部分，因为它们侧重于夏威夷岛屿环境特有的环境资产和问题（火山活动，气候记录，珊瑚礁，水质）。 这种研究提高了UH在社区中的地位，并增加了其对环境的管理和研究的声誉。

0549618RubinThe goals of this project are the acquisition of a multi-collector inductively coupled plasma mass spectrometer (MC-ICPMS) and subsequent methods development to enable cross-disciplinary geochemical research at the University of Hawaii (UH). Numerous analytical applications in Earth, Ocean and Planetary Science either require or are enhanced by such an instrument. For instance MC-ICPMS is well suited to isotopic analyses of elements that cannot be measured by solid-source thermal ionization mass spectrometers (TIMS) because of the high ionization efficiency of the plasma source. In addition, isotopic analyses conventionally done by TIMS can be performed more rapidly and, in many cases, with reduced sample sizes by MC-ICPMS. Initial plans for the UH MC-ICP-MS are to develop 5 types of analytical capabilities, each with multiple applications. These include isotopic analyses of actinide series nuclides to produce high resolution chronologies of volcanic and sedimentary processes, novel transition metal and metalloid fractionation studies of volcanic gasses and condensates to quantify local and global scale volcanic degassing events, mass balance constraints on oceanic crust-seawater exchange via Mg isotopic analysis, Hf, Nd and Pb isotopic analysis of igneous materials for petrologic studies, and in-situ microscopic-scale isotopic analysis of these and other analytes by laser-ablation MC-ICP-MS. The new instrument will become part of the SOEST (School of Ocean and Earth Science and Technology) Isotope Laboratory, which currently houses two TIMS and a radiometric counting facility. The lab is recognized as a leader in U-series, Pb, Nd, and Sr isotope applications to volcanological, mantle geochemical, environmental and marine research topics.Establishing MC-ICP-MS capability will enhance and diversify research capabilities at UH (an EPSCOR and federally recognized minority educational institution) and promote educational opportunities for graduate and undergraduate students. The interdisciplinary character of SOEST and broad capabilities of MC-ICP-MS will allow new areas of research and cross-fertilization between existing research programs. In addition, MC-ICP-MS will become part of numerous investigations that are of local and Pacific-Basin-wide significance because they focus on environmental assets and issues unique to the Hawaiian island setting (volcanism, climate records, coral reefs, water quality). Such research enhances the standing of UH within the community and adds to its reputation for stewardship of and research on the environment.