Acquisition of a Thermal Ionization Mass Spectrometer

0947220 Brandon该合同在24个月内提供179,107美元的NSF资金，用于支持部分收购热电离质谱仪(TIMS)。该仪器将与一台多采集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。这些研究将被用来更好地了解地球早期的分馏作用和硅酸盐地球中的大量Sm/Nd。将在地幔和火成岩中进行高精度的Os同位素测量，以更好地了解早期地球雷尼恩/Os和地球内部的铂/Os比率。Re-Os同位素系统学将被用作阐明沉积物形成和油气运移的精确计时器，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，还将对变质岩中的Sm-Nd同位素年代学进行评估。TIMS还将应用于铀-铅同位素年代学。新工具将通过教师指导、课程作业和实习计划为学生提供支持。此外，研究工作将为研究生和博士后提供实践应用。该仪器将与由国家科学基金会资助的休斯顿少数群体参与联盟项目对接。UH内部以及与莱斯和NASA的合作也将得到支持。呃，将为这一努力提供一个新的翻新实验室，具有清洁的实验室能力。呃还将支持实验室技术员工资的一半。***

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. ***