MRI: Acquisition of a triple-quadrupole ICP-MS and sample introduction hardware for multidisciplinary research and teaching

该主要研究仪器（MRI）项目将支持购买一台现代三重四极电感耦合等离子体质谱仪（TQ-ICP-MS）和三台专用样品处理和导入系统，用于加州大学圣克鲁斯分校海洋科学研究所海洋分析实验室的研究和教学。这套仪器将使教师、研究人员和学生能够进行新颖的多学科分析工作，这将有助于对地球、海洋、行星科学和环境毒理学的不同过程有更精确的了解。新设施将通过为本科生和研究生的课程和研究提供最先进的实践培训仪器，扩大校园对学生社会流动性的承诺，并增加STEM的多样性。实验室pi积极参与AGU桥梁计划（海洋科学），NSF-ICER地球路径-影响（地球和行星科学），以及UCSC STEM多样性计划，该计划为代表性不足的学生提供前沿研究机会。TQ-ICP-MS系统将现代单四极ICP-MS的灵敏度、扫描速度和动态范围与四极反应池四极配置相结合，能够对许多最具挑战性的等压干扰进行明确的化学和物理分辨率。三个专用的样品导入系统包括：(1)海洋和陆地环境中有机金属（如汞）的气相色谱仪形态分析；(2)用于环境毒理学研究的高通量金属形态分析（如砷、铬、硒）和总金属分析的ESI prefast IC；(3)用于海水中超微量元素自动分析的ESI seaFAST。TQ-ICP-MS将与现有的Teledyne Analyte Excite激光烧蚀系统和Thermo Element XR高分辨率磁性ICP-MS集成。该激光器可与ICP-MS或两者同时操作，用于地质和陨石材料的分流分析，用于地球化学和岩石年代学研究。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

This Major Research Instrumentation (MRI) program award will support the acquisition of a modern triple-quadrupole inductively coupled plasma mass spectrometer (TQ-ICP-MS) and three dedicated sample processing and introduction systems for research and teaching in the Institute of Marine Science’s Marine Analytical Laboratory at the University of California, Santa Cruz. This suite of instruments will enable novel multidisciplinary analytical work by faculty, researchers, and students that will contribute to a more refined understanding of diverse processes in Earth, ocean, and planetary sciences, and environmental toxicology. The new facility will amplify the campus commitment to student social mobility and increased diversity in STEM by providing state-of-the-art instrumentation for practical training in the context of undergraduate and graduate coursework and research. Laboratory PIs actively engage with the AGU Bridge program (Ocean Sciences), NSF-ICER GEOPAths - IMPACT (Earth and Planetary Sciences), and the UCSC STEM Diversity Program, which fund cutting-edge research opportunities for underrepresented students. TQ-ICP-MS systems combine the sensitivity, scan speed, and dynamic range of modern single quadrupole ICP-MS with a quadrupole - reaction cell - quadrupole configuration that enables unambiguous chemical and physical resolution of many of the most challenging isobaric interferences. The three dedicated sample introductions systems include: (1) a gas chromatograph speciation analysis of organometallics (e.g., Hg) in the marine and terrestrial environments; (2) an ESI prepFAST IC for high-throughput metal speciation (e.g. As, Cr, Se) and total metal analysis for environmental toxicology research; and (3) an ESI seaFAST for automated analysis of ultra-trace elements in seawater. The TQ-ICP-MS will be integrated with an existing Teledyne Analyte Excite laser ablation system and Thermo Element XR high-resolution magnetic sector ICP-MS. The laser can be operated with either ICP-MS or with both for split-stream analysis of geological and meteoritic materials for geochemical and petrochronologic research.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.