Abstract
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
Received:November 23, 2018  
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:
Author NameAffiliationE-mail
CHEN Chan Guangdong Gemstones &
Precious Metals Testing Center, Guangzhou 510080, China 
susen_chen@163.com 
LONG Chu Guangdong Gemstones &
Precious Metals Testing Center, Guangzhou 510080, China 
a4@gtc-china.cn 
LI Xueming Guangdong Gemstones &
Precious Metals Testing Center, Guangzhou 510080, China 
 
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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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