| 沉淀方式对ICP-AES法测定纯银中铅和镉的影响 |
| |
| 引用本文： | 刘雪松,孔祥冰,李桂华,黄准,王萍,张凤霞.沉淀方式对ICP-AES法测定纯银中铅和镉的影响[J].贵金属,2018,39(1):64-67. |
| |
| 作者姓名： | 刘雪松 孔祥冰 李桂华 黄准 王萍 张凤霞 |
| |
| 作者单位： | 山东省计量科学研究院国家黄金钻石制品质量监督检验中心;山东省社会公正计量行; |
| |
| 基金项目： | 山东省质量技术监督局科研项目(2016KY05)。 |
| |
| 摘 要： | 用硝酸溶解纯银样品,分别加入盐酸和硫氰化钾沉淀分离银基体,用电感耦合等离子体原子发射光谱(ICP-AES)测定试液中的铜、锌、铬、铅和镉。结果表明,采用氯化银沉淀,铅和镉会被吸附,回收率和相对标准偏差(RSD)不能满足测定要求;采用硫氰化银沉淀可以避免对铅和镉的吸附,满足测定要求。
|
| 关 键 词： | 分析化学 银 杂质元素 氯化银 硫氰化银 |
| 收稿时间： | 2017/8/24 0:00:00 |
The Effects of Precipitation Method on Determination of Pb and Cd by ICP-AES in Pure Silver |
| |
| LIU Xuesong,KONG Xiangbing,LI Guihu,HUANG Zhun,WANG Ping and ZHANG Fengxia.The Effects of Precipitation Method on Determination of Pb and Cd by ICP-AES in Pure Silver[J].Precious Metals,2018,39(1):64-67. |
| |
| Authors: | LIU Xuesong KONG Xiangbing LI Guihu HUANG Zhun WANG Ping and ZHANG Fengxia |
| |
| Affiliation: | National Gold & Diamond Testing Center, Shandong Institute of Metrology, Jinan 250014, China,National Gold & Diamond Testing Center, Shandong Institute of Metrology, Jinan 250014, China;Social Justice and Measurement Station of Shandong Province, Jinan 250014, China,National Gold & Diamond Testing Center, Shandong Institute of Metrology, Jinan 250014, China,National Gold & Diamond Testing Center, Shandong Institute of Metrology, Jinan 250014, China,National Gold & Diamond Testing Center, Shandong Institute of Metrology, Jinan 250014, China;Social Justice and Measurement Station of Shandong Province, Jinan 250014, China and National Gold & Diamond Testing Center, Shandong Institute of Metrology, Jinan 250014, China;Social Justice and Measurement Station of Shandong Province, Jinan 250014, China |
| |
| Abstract: | The silver sample was dissolved in nitric acid, and then separated the dissolved silver matrix by either hydrochloric acid or potassium thiocyanate precipitation methods. The concentrations of copper, zinc, chromium, lead and cadmium in sterling silver were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). The results showed that lead and cadmium were adsorbed by AgCl for the HCl precipitation method, and that its recovery and relative standard deviation (RSD) did not meet the determination requirements. However, the AgSCN precipitation method meets the requirements of determination in that there was no adsorption of lead and cadmium by silver thiocyanate. |
| |
| Keywords: | analytical chemistry silver impurities silver chloride silver thiocyanate |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《贵金属》浏览原始摘要信息 |
|
点击此处可从《贵金属》下载全文 |
|
