锡同位素的理论研究及应用  

The Theoretical Researches and Applications of Tin Isotopes

作　　者：张智 阳杰华[1] 刘亮 胡迁 毛伟[1] 符亚洲[1] ZHANG Zhi;YANG Jie-hua;LIU Liang;HU Qian;MAO Wei;FU Ya-zhoul(State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550081,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,矿床地球化学国家重点实验室,贵阳550081 [2]中国科学院大学,北京100049

出　　处：《矿物岩石地球化学通报》2021年第6期1404-1413,共10页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金项目(42073046);贵州省留学回国人才创新创业择优项目[2020(03)];国家重点研发计划项目(2016YFC0600405)。

摘　　要：随着多接收质谱仪分析技术的进步,锡同位素的理论研究和应用取得了巨大的进展,本文综述了锡同位素的研究进展及其应用。由于双稀释剂法与多接收电感耦合等离子质谱仪的结合,使得锡同位素分析的外部精度可达0.03‰以上,比热电离质谱仪高了一个数量级,分析测试精度明显提高。目前,已识别出地幔(δ^(122/118)Sn:0.33‰~0.65‰)和地壳(δ^(122/118)Sn:0.16‰~0.43‰)样品具有明显不同的锡同位素组成,并发现氧化还原、气液分离、部分熔融和结晶分异等地质过程均有明显的锡同位素分馏。作为新兴的非传统稳定同位素的一员,锡同位素已经在揭示成矿过程,制约行星的演化和青铜器的鉴伪等方面展现了独特的优势。随着人们对锡同位素分馏机理研究的不断深入,锡同位素在地质学、行星科学和考古学等领域将会得到更加广泛的应用。With the advancement of multi-collector mass spectrometry,some great progresses have been made in the theoretical research and application of tin isotopes.This article summarizes the research progress and application of tin isotopes.Due to the combination of double spike technique and multi-collector inductively coupled plasma mass spectrometry(MC-ICP-MS),the external accuracy of tin isotope analysis can reach more than 0.03‰,which is an order of magnitude higher than that of the thermal ionization mass spectrometry(TIMS).And analytical precision of tin isotopes is significantly improved.At present,it is identified that there are significantly different tin isotopic compositions for the mantle(δ^(122/118)Sn:0.33‰-0.65‰)and the crust(δ^(122/118)Sn:0.16‰-0.43‰)samples,and it is also discovered that there are obvious fractionation of tin isotopes in various geological processes including the oxidation-reduction,gas-liquid separation,partial melting,and crystallization differentiation.As one of the emerging non-traditional stable isotopes,the application of tin stable isotopes has shown unique advantages in fields for revealing the process of mineralization,constraining the evolution of planets,and identifying the authenticity of bronzes,etc.Moreover,with the further studies of tin isotopic fractionation mechanism,tin isotopes will be more widely applied in fields of geology,planetary science and archaeology,etc.

关 键 词：锡同位素 测试方法 分馏机理 应用 

分 类 号：P597[天文地球—地球化学]