掺铱黄金饰品的特征及检测方法

详细信息

Characteristics of Iridium-Doped Gold Jewelry and Its Determination

Shenzhen Laboratory, National Centre for Quality Supervision and Testing of Gemstone, Shenzhen 518026, China

摘要: 采用显微镜和X射线荧光光谱分析方法对掺Ir黄金饰品的外观特征、掺入物的化学成分、存在形式等进行了研究。研究表明,掺入物主要为Ir,Ru,Os等,它们以独立物相赋存于黄金饰品中。掺入比例w(Ir+Os)∶w(Ru)变化于65%~70%∶30%~35%之间。掺入物的密度与足金的相近。在黄金饰品中掺入Ir等物质明显是掺杂行为,导致黄金成色不足。对掺Ir黄金饰品的检测方法进行了探讨。
- 黄金饰品 /
- Ir /
- 掺杂 /
- X射线荧光光谱分析
Abstract: The superficial characteristics of iridium-doped gold jewelry and the occurrence and the chemical compositions of doped material in gold jewelry have been investigated by using optical microscopy and X-ray fluorescence spectrum analysis.The results show that the doped materials are iridium,ruthenium,osmium,etc,which occur in independent phase.The proportion ofw(Ir+Os)∶w(Ru) is 65%~70%∶30%~35%.The densities of the doped materials are consistent with that of gold.The doping materials in gold jewelry result in the insufficient purity.The testing metheds of iridium-doped jewelry are probed.
- gold jewelry /
- iridium /
- doping /
- X-ray fluorescence spectrum analysis