含锇铱钌金饰品均匀性及金量测定  

Homogeneity of gold jewelry containing osmium, iridium, and ruthenium and the gold content determination

作　　者：王萍 祝培明 舒磊 程春玲 杜冉 刘继梅 曹明英 Wang Ping;Zhu Peiming;Shu Lei;Cheng Chunling;Du Ran;Liu Jimei;Cao Mingying(Shandong Provincial Key Laboratory of Metrology and Measurement,Shandong Institute of Metrology;National Gold&Diamond Testing Center;Shandong Institute of Geological Sciences)

机构地区：[1]山东省计量科学研究院山东省计量检测重点实验室,250014 [2]国家黄金钻石制品质量检验检测中心 [3]山东省地质科学研究院

出　　处：《黄金》2022年第11期91-95,共5页Gold

基　　金：山东计量测试学会科技项目(2020KJ10)。

摘　　要：研究采用不同技术手段分析了含锇铱钌金饰品的均匀性,并建立了含王水不溶杂质金饰品中金量的测定方法。样品经过前处理,王水溶解,过滤,水合肼还原金,过滤、洗涤后,灼烧,称量;王水溶解单质金,采用电感耦合等离子体发射光谱法测定杂质元素银、铜、锌、铂、钯、锇、铱、钌,以及滤液中金量,计算得到金饰品中金量。该方法适用于测定王水不溶杂质质量分数为3%~32%的金饰品,加标回收率大于99%,精密度为1.71%,测定结果准确可靠。The study uses different technical means to analyze the homogeneity of gold jewelry containing osmium, iridium, and ruthenium, and establishes the determination method for gold content in the gold jewelry with aqua regia insoluble impurities.The sample is pre-treated, dissolved by aqua regia, and filtered, and the filtrate is reduced into gold with hydrazine hydrate;after filtering and washing, the sample is incinerated and weighed;aqua regia dissolves gold, and inductively coupled plasma optical emission spectrometry is used to test the impurity elements of silver, copper, zinc, platinum, palladium, osmium, iridium, and ruthenium in gold and the content of gold in the filtrate.The gold content in gold jewelry is obtained by calculation.This method can be used to determine the gold jewelry with aqua regia insoluble impurities mass fraction from 3 % to 32 %.The recovery rate of reference materials is greater than 99 %.The precision of the method is 1.71 %.The test result is reliable.

关 键 词：电感耦合等离子体发射光谱法 金饰品 杂质 前处理 均匀性 

分 类 号：TS934.3[轻工技术与工程]