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Re-Os同位素分析测试技术进展 被引量:19

Progress in Re-Os Isotope Analytical Techniques
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摘要 评述了在ReOs同位素化学前处理和质谱测定方法上取得的一些重要发展和进步。简要介绍和评价了酸溶法、碱熔法、NiS火试金法、Carius管溶样法以及HPAS高温高压釜溶样法等常用的ReOs同位素样品分离方法。Os的分离纯化方法有蒸馏法和Br2或CCl4萃取法以及微蒸馏法,它们是分离和纯化Os的有效方法,也是目前国内外大多数实验室所采用的方法。Re的分离方法仍然是离子交换和溶剂萃取法。本文还介绍了ReOs同位素的质谱测定方法,主要有负离子热电离质谱(NTIMS)和多接收器电感耦合等离子体质谱(MCICPMS),其中NTIMS是ReOs同位素质谱测定中最成功的方法之一,MCICPMS在ReOs同位素质谱测定中具有很大的发展潜力和前景。 The article summarizes some progresses purification and mass spectrometer measurement, in Re-Os isotope sample digestion, separation, and reviews five different digestion techniques, including acid digestion in reducing media, alkali fusion, Nickel sulfide fire assay, Carius tube dissolution and high-pressure ashier digestion. For Os separation, solvent extraction (Br2 or CCl4) and distillation are two mainly effective techniques, and microdistillation is used to further purify Os. Anion exchange and solvent extraction are used to separate and purify Re. The article also introduces the methods for Re-Os isotope measurement by negative thermal ionization mass spectrometry (NTIMS) and multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS), and NTIMS is the successful and conventional methods for Re-Os isotope determination, and MC-ICP-MS now offers the potential of achieving high precision and facilities in Re-Os isotope analysis.
出处 《质谱学报》 EI CAS CSCD 2005年第3期175-181,共7页 Journal of Chinese Mass Spectrometry Society
基金 中国科学院广州地球化学研究所实验方法研究基金项目(030714) 中国科学院知识创新工程重要方向项目(KZCX3SW122) 中国科学院广州地球化学所知识创新领域前沿项目(GIGCX0306)资助
关键词 RE-OS同位素 分离 纯化 负离子热电离质谱 (NTIMS) 多接收器电感耦合等离子体质谱(MC—ICP—MS) Re-Os isotope separation purification micro-distillation extraction negative thermal ionization mass spectrometry (NTIMS) multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS)
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参考文献41

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二级参考文献50

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