Acquisition of a Thermal Ionization Mass Spectrometer

购买热电离质谱仪

• 批准号: 0947220
• 负责人: Alan Brandon
• 金额: $ 17.91万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-02-15 至 2013-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0947220&HistoricalAwards=false
• 关键词: Acquisition; Thermal; Ionization; Mass; Spectrometer

0947220BrandonThis award provides $179,107 in NSF funding over 24 months to support partial acquisition of a Thermal Ionization Mass Spectrometer (TIMS). The instrument will be installed in recently-renovated space along with a multicollector inductively coupled plasma mass spectrometer. The TIMS will be used for high-precision Neodymium isotope measurements in chondrites, early Earth, and planetary materials. These studies will be used to better understand Earth's early fractionation and bulk Sm/Nd in the silicate Earth. High precision Osmium isotope measurements will be made in mantle and igneous rocks to better understand early Earth Reniun/Osmium and Platinum/Osmium ratios in the Earth's interior. Re-Os isotope systematics will be used as a precise chronometer to elucidate sediment formation and hydrocarbon migration and will be applied to mantle and igneous rocks to determine the timing of Earth's interior geochemical processes. Additionally, Sm-Nd isotope chronology will be assessed in metamorphic rocks. The TIMS will also be applied to U-Pb isotope chronology. The new instrument will support students through faculty mentoring, coursework and internship programs. Additionally, the research efforts will provide hands-on use for graduate students and post-docs. The instrument will interface with the Houston Alliance for Minority Participation Project funded by NSF. Collaborations within UH and with Rice and NASA will also be supported. UH will provide a new renovated laboratory with clean lab capabilities for this effort. UH will also support half of a laboratory technician salary. ***

0947220Brandon 该奖项在 24 个月内提供 179,107 美元的 NSF 资金，用于支持部分采购热电离质谱仪 (TIMS)。该仪器将与多接收器电感耦合等离子体质谱仪一起安装在最近翻新的空间中。 TIMS 将用于球粒陨石、早期地球和行星材料中的高精度钕同位素测量。这些研究将用于更好地了解地球的早期分馏和硅酸盐地球中的块状 Sm/Nd。将在地幔和火成岩中进行高精度锇同位素测量，以更好地了解地球内部早期的稀土/锇和铂/锇比率。铼锇同位素系统学将用作精确的计时器来阐明沉积物形成和碳氢化合物迁移，并将应用于地幔和火成岩以确定地球内部地球化学过程的时间。此外，还将评估变质岩中的 Sm-Nd 同位素年代学。 TIMS 还将应用于 U-Pb 同位素年代学。新工具将通过教师指导、课程作业和实习项目为学生提供支持。此外，研究工作将为研究生和博士后提供实践使用机会。该工具将与美国国家科学基金会资助的休斯顿少数族裔参与联盟项目对接。夏威夷大学内部以及与莱斯大学和美国宇航局的合作也将得到支持。为此，休斯敦大学将提供一个新装修的具有清洁实验室能力的实验室。呃还将支持实验室技术员一半的工资。 ***