ICP-AES测定纯金饰品中的痕量钯及其不确定度评估  

Determination of Trace Palladium in Pure Golden Jewelry by ICP-AES and Evaluation of Uncertainty

作　　者：张凤霞[1] 刘海彬[1] 李桂华[1] 王萍[1] 王岳[1] 

机构地区：[1]国家黄金钻石制品质量监督检验中心,山东省计量检测重点实验室,山东省计量科学研究院,济南250014

出　　处：《贵金属》2014年第1期75-78,共4页Precious Metals

基　　金：国家质检总局科技计划(质量技术监督)项目(2011QK226);山东省质量技术监督局科研项目(2011KY02)

摘　　要：建立了王水溶解纯金样品、标准基体匹配、电感耦合等离子体发射光谱(ICP-AES)测定纯金饰品中痕量钯元素的定量分析方法。该方法具有简便、快速、灵敏度高、重现性好等优点。方法检出限为0.08μg/g,加标回收率为104%,相对标准偏差(RSD)为7.52%,A类不确定度为0.0119 mg/L。The quantitative analysis method of trace palladium element in pure golden jewelry with inductively coupled plasma- atomic emission spectrometry（ICP-AES） was established. The samples were dissolved in aqua regia and Pd solution was matched with gold matrix. And then detected by ICP-AES. The test method proved better sensitivity,lower uncertainty and good accuracy, but also the test speed can be improved enormously. The analytical results showed that the detection limit of palladium trace element was 0.08 μg/g.The recovery rates of the studied elements was 104%.The relative standard deviations（RSD） of the method was 7.52%. The uncertainties of type A was 0.0119 mg/L.

关 键 词：分析化学 电感耦合等离子体-原子发射光谱法 纯金饰品 钯 A类不确定度 

分 类 号：O657.31[理学—分析化学]