文章摘要
贵金属饰品检测中几类特殊样品的分析
Analysis of Some Special Samples in Precious Metal Testing
投稿时间:2018-11-23  
DOI:
中文关键词: 分析化学  贵金属饰品  掺杂  含量测定  X射线荧光光谱法(XRF)
英文关键词: analytical chemistry  precious metal jewelry  doping  content testing  X-ray fluorescence spectrometry(XRF)
基金项目:
作者单位E-mail
陈婵 广东省珠宝玉石及贵金属检测中心广州 510080 susen_chen@163.com 
龙楚 广东省珠宝玉石及贵金属检测中心广州 510080 a4@gtc-china.cn 
李雪明 广东省珠宝玉石及贵金属检测中心广州 510080  
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中文摘要:
      贵金属饰品种类繁多,配方、工艺多样,检测中需要根据具体情况采用合理的分析方法。以检测样品为实例,介绍了包着贵金属外壳的样品、含特殊元素配方的样品、表面有镀层的925银饰品、三色18K金以及饰品中含有害元素等5类特殊样品,在X射线荧光光谱法(XRF)可能误判的情况下如何进行识别,并采用密度法、电感耦合等离子体-原子发射光谱法(ICP-AES)、电位滴定法和火试金等方法准确测定贵金属含量。
英文摘要:
      In the recent market there are so many kinds of precious metal jewelry. Due to its different formulation and unique manufacturing process, every precious metal sample should be analyzed accordingly with a reasonable analysis method. Five special samples encountered in the actual analysis work were jewelry coated with precious metals, jewelry containing other elements, 925 silver jewellery with surface finishes, 18K gold of three colors and jewelry with baneful elements. Density method, inductively coupled plasma-atomic emission spectrometry (ICP-AES), potentionmetric method along with fire assay were used as additional analysis means for these samples, when the accurate analysis results could not achieved simply by X-ray fluorescence spectrometric method (XRF).
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