Acquisition of a State-of-the-Art Thermal Ionization Mass Spectrometer

购置最先进的热电离质谱仪

• 批准号: 1255787
• 负责人: Richard Walker
• 金额: $ 32.5万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-05-15 至 2015-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1255787&HistoricalAwards=false
• 关键词: Acquisition; State; Art; Thermal; Ionization

This award will provide funding to replace two old mass spectrometers with a state-of-the-art Thermal Ionization Mass Spectrometer (TIMS) to complement the existing Triton in the Isotope Geochemistry Laboratory at the University of Maryland. The new instrument will be installed in the space currently occupied by the two old mass spectrometers that it will replace. Specific analytical tasks to be tackled with the new TIMS instrument include: 1) high precision 182W, 142Nd-143Nd, and 186Os-187Os isotopic analysis of ancient through young mantle-derived materials, as a means of studying the evolution of early Earth reservoirs and rates of mantle mixing through time, 2) high precision measurement of Ru and Mo isotopes in early Earth rocks to search for diverse, late accreted components to Earth, 3) measurement of Os isotopic composition and abundance as a means of studying the timing, formation mechanisms and secondary processes involved in the generation of subcontinental lithospheric mantle, 4) measurement of Os isotopic composition and abundance in subduction zone materials as a tool for tracing mantle wedge contributions to mélange zones, 5) measurement of Nd and Sr isotopes in Antarctic granites as petrogenetic tools, and 6) analysis of Sr isotopes in carbonates to gauge relative rates of hydrothermal and terrestrial inputs to seawater through time.

该病房将提供两个旧的质谱仪，其中包括Art-Art There Inalizalation质量光谱仪（TIMS）现有的Triton在马里兰州大学的同位素地球化学中。光谱仪。在无与伦比的地球上，在研究时间安排，形成机制和次要过程中，涉及属于subcontin的产生的时间，以搜索多种浓度的成分到同位素组成的地球成分。 5）ND SR同位素在南极花岗岩中的测量剂，作为质量工具的质量工具，随着时间的流逝，水热和陆地输入的速率。