ICP-OES 法测定纯银中锡、铅、锑、铋的研究  

Study on Determination of Tin,Lead,Antimony and Bismuth in Pure Silver by ICP-OES

作　　者：黄准 刘雪松 孔祥冰 胡建华 李桂华 祝培明 张喆 Huang Zhun;Liu Xuesong;Kong Xiangbing;Hu Jianhua;Li Guihua;Zhu Peiming;Zhang Zhe(Shandong Provincial Key Laboratory of Metrology and Measurement,National Gold&Diamond Testing Center,Jinan 250014,China;Shandong Provincial Measurement and Testing Center,Jinan 250014,China;Shenzhen Shenzhi Testing Technology Co.,Ltd,Shenzhen 518020,China)

机构地区：[1]山东省计量科学研究院国家黄金钻石制品质量检验检测中心,山东济南250014 [2]山东省计量检测中心,山东济南250014 [3]深圳市深智检测技术有限公司,广东深圳518020

出　　处：《现代科学仪器》2023年第2期29-32,共4页Modern Scientific Instruments

基　　金：山东省计量院科技项目(sdimkj202218)。

摘　　要：纯银样品用硝酸溶解后,加入盐酸沉淀分离银基体,用电感耦合等离子体发射光谱法(ICP-OES)进行测试,计算加标回收率和相对标准偏差,发现氯化银沉淀对于铅、铋吸附能力较强,对锡、锑吸附能力较弱,该方法无法准确检测样品中铅、铋。试验硫氰化钾沉淀法消除银基体干扰,可以准确检测铅、铋,加标回收率达85%以上。After the pure silver sample was dissolved in nitric acid,hydrochloric acid was added to precipitate and separate the silver matrix,which was measured by inductively coupled plasma optical emission spectrometry(ICP-OES),and the standard addition recovery and relative standard deviation were calculated.It has strong ability,weak adsorption ability to tin and antimony,and cannot accurately detect lead and bismuth.The potassium thiocyanate precipitation method was tested to remove the interference of silver matrix,which could accurately detect lead and bismuth,and the recovery rate of standard addition was more than 85%.

关 键 词：ICP-OES 纯银 氯化银 硫氰化银 

分 类 号：O657.31[理学—分析化学]