沉淀分离后电感耦合等离子体发射光谱法分析99.99%银中的杂质元素  

Determination of Impurity Elements in 99.99% Silver by ICP-AES after Precipitation Separation

作　　者：张帆[1] 王浩杰[1] 蔡薇[1] 王鑫磊[1] 黄成[1] 王亮[1] Zhang Fan;Wang Hao-jie;Cai Wei;Wang Xin-lei;Huang Cheng;Wang Liang(Nanjing Institute of Product Quality Inspection,National Center of Quality Supervision&Inspection on Gold-Silver Products(Nanjing),Jiangsu Nanjing 210028)

机构地区：[1]南京市产品质量监督检验院,国家金银制品质量监督检验中心(南京),江苏南京210028

出　　处：《生物化工》2018年第6期106-107,119,共3页Biological Chemical Engineering

摘　　要：本文对硝酸溶解-沉淀分离银基体的制备方法进行了改进,通过此种方法制备样品后,在电感耦合等离子体发射光谱上测定纯银中的杂质元素含量。实验结果表明,加标量为0.2μg/mL时,20种杂质元素的回收率在90%~110%,分析结果准确,检出限低,解决了单一硝酸很难溶解杂质元素金和铂的问题,可用于测定银含量为99.99%的银产品中的杂质元素。The preparation method of dissolved by nitric acid and precipitated silver has been improved.The content of impurity elements in pure silver was determined by ICP-AES by this method.The recovery rate of 20impurity elements is between 90% and 110% when the adding standard is 0.2μg/mL,the experimental results are accurate and the detection limit is low.The problem that gold and platinum are difficult to be dissolved by nitric acid have been solved.The method can be used to determine the impurity elements in silver products with silver content of 99.99%.

关 键 词：沉淀分离 电感耦合等离子体发射光谱 纯银 杂质元素 

分 类 号：O657.3[理学—分析化学]