MRI: Acquisition of a Multicollector Inductively Coupled Plasma Mass Spectrometer for Earth Science Research at the University of Texas at Austin

MRI：德克萨斯大学奥斯汀分校购买多接收器感应耦合等离子体质谱仪用于地球科学研究

• 批准号: 1532097
• 负责人: Jay Banner
• 金额: $ 60.94万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-08-01 至 2018-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1532097&HistoricalAwards=false
• 关键词: MRI; Acquisition; Multicollector; Inductively; Coupled

This award provides funding for the acquisition of a new generation multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS). This instrumentation would replace the aging MC-ICP-MS currently used by the Jackson School of Geosciences, University of Texas, Austin. Acquisition of a new MC-ICP-MS will expand the research directions and capabilities offered by the Jackson School of Geosciences and enrich educational opportunities for students. JSG faculty are engaged in a variety of outreach activities, and research involving the new instrument will be integrated into an ongoing REU (Research Experience for Undergraduates) program, GK-12 outreach program partnering K-12 teachers and STEM graduate students, and GeoFORCE (a successful college preparatory outreach program targeting Texas minority high school students). Numerous scientists at UT-Austin have both current and planned research projects requiring a new generation MC-ICP-MS analyses. These analytical needs include the development of new techniques in addition to applying existing methodologies to answer new and innovative research questions. These include U-series measurements to determine ages on carbonates. This will be applied to a variety of research topics including studies of cave, pedogenic and lacustrine carbonate deposits and dating of ostrich egg shells to investigate the timing of human evolution. A modern MC-ICP-MS would also facilitate the concurrent measurement of Hf and Pb isotopes and allow us to identify both the isotopic fingerprint and age within a single growth zone in zircons, crucial to investigations of magma chamber evolution and sediment provenance. Additional research applications include high spatial resolution in situ Sr isotope measurements in a) biogenic carbonates in fishes to reconstruct migration histories, b) speleothems in karst hydrologic systems to reconstruct drip-water evolution and climate, and c) feldspar phenocrysts to track magma mixing and crustal assimilation. The new instrument will also be used to measure a variety of isotopes including Li, Os, and Pb for isotopic fingerprinting of mineral phases and bulk rocks and Fe and Zn isotopes to investigate metal uptake in cells.

该奖项为购买新一代多接收器电感耦合等离子体质谱仪 (MC-ICP-MS) 提供资金。 该仪器将取代德克萨斯大学奥斯汀分校杰克逊地球科学学院目前使用的老化 MC-ICP-MS。 购买新的 MC-ICP-MS 将扩大杰克逊地球科学学院提供的研究方向和能力，并丰富学生的教育机会。 JSG 教师正在从事各种外展活动，涉及新仪器的研究将被纳入正在进行的 REU（本科生研究体验）计划、与 K-12 教师和 STEM 研究生合作的 GK-12 外展计划以及 GeoFORCE（针对德克萨斯州少数族裔高中生的成功大学预科外展计划）。 UT-Austin 的许多科学家当前和计划中的研究项目都需要新一代 MC-ICP-MS 分析。 这些分析需求包括开发新技术以及应用现有方法来回答新的和创新的研究问题。 其中包括用于确定碳酸盐年龄的 U 系列测量。 这将应用于各种研究课题，包括洞穴、成土和湖泊碳酸盐沉积物的研究以及鸵鸟蛋壳的年代测定，以调查人类进化的时间。 现代 MC-ICP-MS 还将有助于同时测量 Hf 和 Pb 同位素，并使我们能够识别锆石单个生长区内的同位素指纹和年龄，这对于研究岩浆室演化和沉积物来源至关重要。 其他研究应用包括高空间分辨率原位锶同位素测量：a) 鱼类生物碳酸盐，以重建迁徙历史；b) 岩溶水文系统中的洞穴沉积物，以重建滴水演化和气候；c) 长石斑晶，以跟踪岩浆混合和地壳同化。 新仪器还将用于测量各种同位素，包括用于矿物相和块体岩石同位素指纹分析的锂、锇和铅，以及用于研究细胞中金属吸收的铁和锌同位素。