IDENTIFICATION OF FORGERIES BY MEASURING TIN ISOTOPES IN CORRODED BRONZE OBJECTS
IDENTIFICATION OF FORGERIES BY MEASURING TIN ISOTOPES IN CORRODED BRONZE OBJECTS
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DOI：
10.1111/j.1475-4754.2011.00598.x
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发表时间：
2012-02
期刊：
影响因子：
1.6
通讯作者：
D. Nickel;M. Haustein;T. Lampke;E. Pernicka
中科院分区：
文献类型：
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作者：
D. Nickel;M. Haustein;T. Lampke;E. Pernicka
青铜赝品的可靠鉴定往往存在问题，因为传统的方法，如风格研究，光学显微镜，化学分析或腐蚀的X射线衍射可能无法得出结论。我们提出了一种方法，该方法是基于锡同位素比122 Sn/116 Sn和117 Sn/119 Sn的金属和粘附腐蚀层中的比较。人造包浆通常在短时间内产生。已经观察到，这样的程序导致腐蚀层中轻锡同位素的耗尽，而在自然腐蚀的真实考古对象中没有检测到同位素分馏。这种方法也被应用于考古学对象，可以证实，除其他例子外，著名的“内布拉天空圆盘”是真实的。
The reliable identification of fakes consisting of bronze often presents problems, because traditional methods such as stylistic studies, optical microscopy, chemical analysis or X-ray diffraction of the corrosion may not be conclusive. We present a method that is based on the comparison of the tin isotope ratios 122Sn/116Sn and 117Sn/119Sn in the metal and in the adherent corrosion layer. An artificial patina is usually generated within a short time period. It has been observed that such a procedure leads to a depletion of the light tin isotopes in the corrosion layer, while in naturally corroded authentic archaeological objects no isotopic fractionation has been detected. The method has also been applied to archaeological objects and it could be confirmed, among other examples, that the famous ‘Sky Disc of Nebra’ is authentic.