Acquisition of a High Precision Thermal Ionization Mass Spectrometer for Geochemical Research

获取用于地球化学研究的高精度热电离质谱仪

• 批准号: 0236741
• 负责人: Donald DePaolo
• 金额: $ 28万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-15 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0236741&HistoricalAwards=false
• 关键词: Acquisition; Precision; Thermal; Ionization; Mass

EAR-0236741DePaoloThe field of isotope geochemistry has contributed in important ways to a broad spectrum of studies in Earth Sciences. Advances in instrumentation are a key component of many research advances. This project involves the purchase of a new instrument to facilitate studies that will contribute to our understanding of deep earth processes, climate change, and earth history. The new design features of the instrument will allow us to more precisely measure small differences in isotope ratios for elements like Sr, Nd, Os, U, Ca and Fe. These small isotopic variations provide important clues about earth processes that cannot be obtained by other means. The new instrument will be used for geochemical investigations in biogeochemistry, mantle geochemistry, basalt petrogenesis, silicic magma systems, granite petrogenesis, crustal growth and structure, geochronology, ocean paleochemistry, and groundwater and deep sea pore fluid geochemistry. Anticipated studies include U and Th isotopes in volcanic rocks and groundwaters, Sr isotopes in zircon, Fe isotopes, and negative ion studies for elements like Os, Se and B. The new instrument will replace a 14-year-old multi-collector instrument in the Department of Earth and Planetary Science. The University of California will contribute about half of the funds for the purchase. Intellectual merit: The PI has 27 years of experience in isotope geochemical research, has an extensive record of publication, and has trained more than twenty Ph.D. students. The Institution has a long record of support of facilities, and there is sufficient research funding to ensure the instrumentation will be well used. Broader Impacts: The proposed instrumentation constitutes a significant improvement to the research and educational infrastructure at U.C. Berkeley. In the previous 14 years, 20 graduate students (8 women) 8 postdoctoral fellows (4 women), plus more than 20 visitors, undergraduates and collaborators have pursued research in the facility that will house the new instrument. The planned research will benefit society by improving our knowledge of natural hazards and global climate change.***

同位素地球化学领域对地球科学的广泛研究做出了重要贡献。 仪器的进步是许多研究进步的关键组成部分。 该项目涉及购买一种新的仪器，以促进研究，这将有助于我们对地球深部过程，气候变化和地球历史的理解。 该仪器的新设计特点将使我们能够更精确地测量Sr、Nd、Os、U、Ca和Fe等元素同位素比的微小差异。 这些微小的同位素变化提供了通过其他手段无法获得的关于地球过程的重要线索。 新仪器将用于地球化学研究，包括岩石地球化学、地幔地球化学、玄武岩岩石成因、岩浆系统、花岗岩岩石成因、地壳生长和结构、地质年代学、海洋古化学、地下水和深海孔隙流体地球化学。 预期的研究包括火山岩和地下水中的U和Th同位素、锆石中的Sr同位素、Fe同位素以及Os、Se和B等元素的负离子研究。 新仪器将取代地球和行星科学部已有14年历史的多收集器仪器。 加州大学将为购买提供约一半的资金。智力优点：PI在同位素地球化学研究方面有27年的经验，有广泛的出版记录，并培养了20多名博士。学生 该研究所长期以来一直支持设施，并有足够的研究经费，以确保仪器得到良好的使用。 更广泛的影响：拟议的仪器构成了在U.C.的研究和教育基础设施的显着改善。伯克利 在过去的14年中，20名研究生（8名女性）8名博士后研究员（4名女性），加上20多名访客，本科生和合作者在将容纳新仪器的设施中进行了研究。 计划中的研究将通过提高我们对自然灾害和全球气候变化的认识来造福社会。