Development of ICP Magnetic Sector Multicollector Mass Spectrometry

ICP磁扇形多接收器质谱仪的研制

• 批准号: 9406248
• 负责人: Alexander Halliday
• 金额: $ 15万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1997-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9406248&HistoricalAwards=false
• 关键词: Development; ICP; Magnetic; Sector; Multicollector

9406248 Halliday This award provides funding for personnel costs associated with the development of a prototype inductively- coupled plasma magnetic sector multicollector mass spectrometer to be operated in the Department of Geological Sciences at the University of Michigan. The instrument combines the advantages of very efficient plasma ionization with the precision of multicollector magnetic sector mass spectrometry. The University of Michigan instrument is the first of its kind in the world, and the analytical chemist that will be supported through this award will assist the Principal Investigator and colleagues in exploiting the full capabilities of the instrument. Specifically, the person will assist in developing new methods of chemical preparation of samples, understanding the chemical speciation involved in laser ablation and the effects of the processes acting within the plasma that affect transmission, molecular interferences, ionization efficiency, mass discrimination, and matrix effects. The scientific applications for which this instrument and technique development is intended include isotopic studies of natural fluid inclusions, high precision Rb-Sr geochronology, In-Sn geochronology of sulfides, U-Th disequilibirum dating of small samples, and Lu-Hf isotope geochemistry of atmospheric particulates. ***

小行星9406248 该奖项提供资金，用于与密歇根大学地质科学系运行的原型电感耦合等离子体磁扇区多接收器质谱仪的开发相关的人员费用。该仪器结合了非常高效的等离子体电离的优势和多接收器磁扇形质谱的精确度。密歇根大学的仪器是世界上第一台此类仪器，通过该奖项获得支持的分析化学家将协助首席研究员和同事充分利用仪器的全部功能。具体而言，该人员将协助开发样品化学制备的新方法，了解激光烧蚀中涉及的化学形态以及影响传输，分子干扰，电离效率，质量歧视和基质效应的等离子体内作用过程的影响。该仪器和技术的科学应用包括天然流体包裹体的同位素研究、高精度Rb-Sr年代学、硫化物的In-Sn年代学、小样品的U-Th不平衡定年和大气颗粒物的Lu-Hf同位素地球化学。 ***