电感耦合等离子体发射光谱法测定银饰品中镧、铈、钐、钇、铟  

Determination of lanthanum,cerium,samarium,yttrium and indium in silver jewelry by inductively coupled plasma optical emission spectrometry

作　　者：那勃[1] 孟建华[1] 张璐 张少强 Na Bo;Meng Jianhua;Zhang Lu;Zhang Shaoqiang(Tianjin Product Quality Inspection Technology Research Institute,National Testing Center for Gold and Silver Jewelry(Tianjin),Tianjin 300384,China;Huajin Guojian(Shenzhen)Testing Center of Gold and Silver Jewelry Co.Ltd.,Shenzhen 518000,China)

机构地区：[1]天津市产品质量监督检测技术研究院,国家金银饰品质量监督检验中心(天津),天津300384 [2]华津国检(深圳)金银珠宝检验中心有限公司,广东深圳518000

出　　处：《化学分析计量》2021年第4期25-27,共3页Chemical Analysis And Meterage

基　　金：天津市市场和质量监督管理委员会科技计划项目(2020-W18)。

摘　　要：建立电感耦合等离子体发射光谱法测定银饰品中镧、铈、钐、钇、铟元素的方法。将样品用硝酸溶解,加入盐酸使银基体沉淀分离,在优选的分析谱线下,采用电感耦合等离子体发射光谱法测定滤液中待测元素的含量。镧、铈、钐、钇、铟的质量浓度在0.0~2.0 μg/mL范围内与光谱强度具有良好的线性关系,相关系数均大于0.999,检出限为0.000 2~0.007 9 μg/mL。测定结果的相对标准偏差为0.63%~3.59%(n=6),加标样品回收率为97.1%~104.2%。该方法适用于银饰品中镧、铈、钐、钇、铟含量的测定,可为银饰品的监管工作提供技术支持。A method for the determination of lanthanum,cerium,samarium,yttrium and indium in silver jewelry by inductively coupled plasma optical emission spectrometry(ICP-OES)was established.The sample was dissolved in nitric acid,and the silver matrix was precipitated and separated by adding hydrochloric acid.Under the optimal analytical line,the content of the elements in the filtrate was determined by inductively coupled plasma optical emission spectrometry.The mass concentration of lanthanum,cerium,samarium,yttrium,indium had good relationships with the spectral intensity in the range of 0.0-2.0μg/mL,the correlation coefficients were more than 0.999,the detection limits were 0.0002-0.0079 μg/mL.The relative standard deviations of the determination results were 0.63%-3.59%(n=6),and the recoveries of spiked samples were 97.1%-104.2%.The method is suitable for the determination of lanthanum,cerium,samarium,yttrium and indium in silver jewelry,which can provide technical support for the supervision of silver jewelry.

关 键 词：银饰品 电感耦合等离子体发射光谱法 镧 铈 钐 钇 铟 

分 类 号：O657.7[理学—分析化学]