An atypical interlaboratory assay: Looking for an updated hallmark (-jewelry) method
An atypical interlaboratory assay: Looking for an updated hallmark (-jewelry) method
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非典型实验室间检测：寻找更新的标志（珠宝）方法
DOI：
10.1007/s00216-001-1129-2
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发表时间：
2002
影响因子：
4.3
通讯作者：
D. C. M. D. Luque
中科院分区：
文献类型：
--
作者：
A. Jurado;D. C. M. D. Luque
比较了激光诱导击穿光谱-偏最小二乘（LIBS-PLS）方法与基于诱导耦合等离子体原子发射光谱法（ICP-AES）、火焰原子吸收光谱法（FAAS）、原子扫描显微镜（ASM）是为了验证作为固体标准的合金中金和银的含量，并为珠宝首饰中金和银的标志开发一种替代方法。为了开发一种尽可能通用的方法，在LIBS中使用了17种金浓度在100到50%之间的合金和8种银浓度在100到80%之间以及通常存在于珠宝中的其他金属的不同浓度的合金作为固体标准。对几种合金（金9种，银7种）的分析结果表明，所提出的方法与官方方法相当。
A comparison between a laser-induced breakdown spectrometry-partial least squares (LIBS-PLS) method and methods based on some well-known techniques, such as induced-coupled plasma-atomic emission spectrometry (ICP-AES), flame atomic absorption spectrometry (FAAS), and atomic scanning microscopy (ASM) is presented in order to both validate the content of gold and silver in alloys to be used as solid standards and develop an alternative to the established methods for the hallmark of gold and silver in jewelry pieces. 17 alloys with gold concentrations ranging from 100 to 50% and 8 alloys with silver concentrations between 100 and 80% and variable concentrations of other metals usually present in jewels were used as solid standards in LIBS in order to develop a method as general as possible. The results obtained in the analysis of some alloys (9 for gold and 7 for silver) show that the proposed method is comparable with the official one.