锑同位素测试方法及其应用研究  

Research Progress in Measurement and Application of Antimony Isotope

作　　者：赵博 朱建明[2] 秦海波[1] 谭德灿 徐文坡 ZHAO Bo;ZHU Jian-ming;QIN Hai-bo;TAN De-can;XU Wen-po(State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences, Guiyang 550081,China;State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Beijing 100083,China;University,of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院地球化学研究所,环境地球化学国家重点实验室,贵阳550081 [2]中国地质大学(北京)地质过程与矿产资源国家重点实验室,北京100083 [3]中国科学院大学,北京100049

出　　处：《矿物岩石地球化学通报》2018年第6期1181-1189,共9页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家重点基础研究发展计划项目(973)(2014CB238903);国家自然科学基金项目(41673017,41473028)

摘　　要：随着多接收电感耦合等离子质谱仪及其分析技术的快速发展,锑同位素得以深入研究,从而为有效示踪环境中锑来源与地球化学过程成为可能。本文在锑同位素分析方法及其应用研究最新进展评述的基础上,结合笔者团队开发的Sb同位素分析方法,指出离子交换树脂法与巯基纤维或树脂相结合的纯化分离可能是首选的前处理方案;而元素外标法与氢化物系统的结合,是进行仪器质量分馏校正的最佳途径,其分析精度和效率都可以大幅提升,分析精度可达0.4ε。氧化还原、蒸发冷凝和吸附过程等是产生锑同位素分馏的主要原因。目前,锑同位素在环境污染和考古学研究中已展现了独特的优势,并将随着其分馏机理的进一步阐明和应用范围的拓展,在地学及其他诸多领域得到更广泛的应用。Antimony (Sb)is a toxic and potentially carcinogenic metalloid element,and is widely used in industrial prod- ucts.Currently,environmental pollution of Sb has attracted many scholars/attention due to the enhancement of human activities.With the rapid development of MC-ICP-MS technology and purification techniques,the study of Sb isotopes has been become reality.Antimony isotope has been served as a powerful tool for tracing the source and geochemical process of antimony in the environment.On the basis of the review of the latest progress in the analysis of antimony isotopes and their application,and combining with the study of the Sb isotope analysis developed by us,We suggested the separation of Sb isotopes from sample using ionic exchange resin combined with thio-fiber (TCF)or resin may be a preferred scheme,and the combination of elemental doping (ED)and hydride generation system (HG)is the best way to correct instrumental mass bias.Measures under such conditions can have analytical accuracy and precision of Sb isotopes better than 0.4ε.At present,antimony isotope has shown its unique advantages in environmental pollution and archaeological research.Therefore,with the further studies of its fractionation mechanism and the extension of its application research,antimony isotopes will be widely used in geosciences and in many other fields.

关 键 词：锑同位素 分析方法 分馏机理 同位素应用 多接受杯电感耦合等离子体质谱仪 

分 类 号：P597[天文地球—地球化学]