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高校地质学报 ›› 2021, Vol. 27 ›› Issue (3): 289-305.DOI: 10.16108/j.issn1006-7493.2021032

• 固体地球科学领域重点实验室联盟实验技术与应用年会十周年纪念专辑 • 上一篇    下一篇

Ba 同位素分析方法综述

田兰兰1,于慧敏1, 2*,南晓云1,黄 方1, 2   

  1. 1. 中国科学技术大学 地球和空间科学学院 中国科学院壳幔物质与环境重点实验室,合肥 230026;
    2.中国科学院 比较行星学卓越创新中心,合肥 230026
  • 出版日期:2021-06-20 发布日期:2021-06-21

A Review of Barium Isotope Analytical Methods

TIAN Lanlan1,YU Huimin1, 2*,NAN Xiaoyun1,HUANG Fang1, 2   

  1. 1. CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China;
    2. CAS Center for Excellence in Comparative Planetology, Hefei 230026, China
  • Online:2021-06-20 Published:2021-06-21

摘要: 随着实验技术的进步以及多接收电感耦合等离子体质谱仪(MC-ICP-MS)和热电离质谱仪(TIMS)的发展,近年来Ba 同位素的分析方法取得了显著进展。分析精度(δ138/134Ba,2SD)从之前的1 ‰ 提高到好于0.05 ‰。文章综述了近年来高精度Ba 同位素分析方法(溶液法)的发展历程,总结了国内外实验室关于不同类型样品的消解、Ba 元素化学纯化流程以及Ba 同位素质谱测定等方法,并对国内外多个实验室已发表的各类标准物质的Ba 同位素组成进行统计。研究结果可为Ba 同位素激光原位分析提供参考,为后续分馏机理解析和应用研究提供技术支撑。

关键词: Ba同位素, 分析方法, 热电离质谱仪, 多接收电感耦合等离子体质谱仪

Abstract: With the advancement of analytical techniques and the development of mass spectrometers (MC-ICP-MS and TIMS), the barium isotopic analysis methods have been significantly improved. The analytical precision of δ138/134Ba is better than 0.05 ‰ (2SD) compared with 1 ‰ (2SD) in previous studies. This article reviewed the barium isotope analysis methods (solution methods) in the past ten years, and summarized the digestion methods, the chemical purification procedures, and the instrumental analysis of barium isotopes for different types of samples. In addition, the barium isotopic compositions of various reference materials analyzed in different laboratories are summarized in this study. We hope that this paper will help researchers to establish in situ analysis methods of Ba isotopes, and also provide support in Ba isotope fractionation mechanism deduction and geological applications.

Key words: barium isotopes, analytical method, TIMS, MC-ICP-MS

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