Acquisition of a Thermal Ionization Mass Spectrometer with Positive and Negative Ion Capability for Geologic Research

购买具有正离子和负离子功能的热电离质谱仪用于地质研究

基本信息

批准号：
0651177
负责人：
John Lassiter
金额：
$ 30.87万
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：
2007
资助国家：
美国
起止时间：
2007-05-01 至 2009-04-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0651177&HistoricalAwards=false
关键词：
Acquisition Thermal Ionization Mass Spectrometer

项目摘要

This grant provides partial funding for the purchase of a thermal-ionization mass spectrometer to be housed in the Department of Geological Sciences at UT Austin. The new mass spectrometer will benefit several faculty and research scientists within the department by enabling the very precise isotopic analysis of a wide range of elements of geologic interest, such as Sr, Nd, Pb, and Os. High-precision isotope analysis is a critical tool utilized in a wide range of geologic research. Isotopic variations in geologic materials can provide important insights into the timing of geologic processes ranging from volcanism to planetary differentiation. Isotopic variations also serve as "tracers" of geologic processes ranging from melt depletion of the mantle to the chemical weathering of continental rocks. The new mass spectrometer will allow investigation of a wide range of topics, ranging from the timing and mechanisms of solar system formation and early Earth differentiation, to modern-day core/mantle interaction and the origin and nature of mantle plumes, to the response of hydrologic systems to climate change. In addition to serving the research needs of the Department of Geological Sciences at UT Austin, the mass spectrometer that will be acquired through this grant will also aid the Department to fulfill its academic mission by providing students access to and instruction in the use of cutting-edge research technologies utilized in the Geological Sciences.

这笔赠款为购买位于德克萨斯大学奥斯汀分校地质科学系的热电离质谱仪提供了部分资金。新型质谱仪能够对各种具有地质意义的元素（例如 Sr、Nd、Pb 和 Os）进行非常精确的同位素分析，从而使该系的几位教师和研究科学家受益。高精度同位素分析是广泛地质研究中使用的关键工具。地质材料中的同位素变化可以为从火山活动到行星分异等地质过程的时间提供重要的见解。同位素变化也可以作为从地幔熔耗到大陆岩石化学风化等地质过程的“示踪剂”。新的质谱仪将能够研究广泛的主题，从太阳系形成和早期地球分化的时间和机制，到现代地核/地幔相互作用和地幔羽流的起源和性质，到地幔柱的响应水文系统对气候变化的影响。除了满足德克萨斯大学奥斯汀分校地质科学系的研究需求外，通过这笔赠款购买的质谱仪还将帮助该系履行其学术使命，为学生提供使用切割的机会和指导。地质科学中使用的边缘研究技术。