Cu、Sn、Ag同位素在古金属制品溯源研究中的应用

Application of Cu,Sn and Ag isotopes in tracing the ancient metal products

近年来,随着同位素分析方法的不断突破和新一代多接收电感耦合等离子体质谱(MC-ICP-MS)测试技术的广泛应用,Cu、Sn、Ag等非传统同位素在古代金属制品溯源研究中显示出较好的应用前景。本文综述了近20年来Cu、Sn、Ag同位素在古代金属制品应用研究的相关进展,并展望了其应用前景:①由于不同矿床之间Cu、Sn、Ag同位素存较大重叠,这些同位素均难以作为独立的证据追溯金属制品的地质来源;②Cu同位素在原生矿石与表生矿石之间存在较大的分馏,是示踪铜矿石类型的可靠方法,Ag同位素也具推断银矿石类型的潜力;③将Cu、Sn、Ag同位素与Pb同位素、微量元素相结合,并采用合理的统计方法,开展综合溯源研究将是今后应用非传统同位素进行古代金属制品溯源研究的发展方向。

In recent years,there have been significant advancements in the field of isotope analysis.Particularly,the emergence of a new generation of multi-collector inductively coupled plasma-mass spectrometry(MCICP-MS)testing technology has greatly contributed to its widespread application.As a result,nontraditional isotopes(e.g.,Cu,Sn and Ag isotopes)have demonstrated promising potential in tracing ancient metal products.This study aims to review and list below the progress made in the past two decades regarding the application of these isotopes in the research of ancient metal products,as well as their application prospects.①The extensive and significant overlap of Cu,Sn,and Ag isotopes among different deposits makes it challenging to trace the geological source of metal products using these isotopes as independent evidence.②Cu isotopes exhibit significant fractionation between primary and supergene ores,making them reliable for tracing copper ore types.Additionally,Ag isotopes have the potential to identify silver ore types.③By combining Cu-Sn-Ag isotopes with Pb isotopes and trace elements,comprehensive traceability research can be conducted using appropriate statistical methods.This integrated approach is expected to be the future direction for tracing ancient metal products using non-traditional isotopes.