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| 微波消解–ICP-AES法测定Pd950首饰中多种有害元素 |
| Determination of Several Harmful Elements in Pd950 Jewelry by Microwave Digestion–ICP-AES Method |
| Received:February 10, 2015 |
| DOI： |
| 中文关键词: 分析化学 微波消解 电感耦合等离子体-原子发射光谱法 Pd950首饰 汞 铅 镉 铬 砷 |
| 英文关键词: analytical chemistry microwave digestion ICP-AES method Pd950 jewelry Hg Pb Cd Cr As |
| 基金项目:山东省质量技术监督局科研项目(2011KY02)。 |
| Author Name | Affiliation | E-mail | | ZHANG Fengxia | National Gold and Diamond Testing Center of China, Shandong Institute of Metrology,Shandong Social Justice Institute of Metrology, Ji’ nan 250014, China | zhfenxia@163.com | | CHENG Youfa | National Gold and Diamond Testing Center of China, Shandong Institute of Metrology,Shandong Social Justice Institute of Metrology, Ji’ nan 250014, China | | | WANG Ping | National Gold and Diamond Testing Center of China, Shandong Institute of Metrology,Shandong Social Justice Institute of Metrology, Ji’ nan 250014, China | | | YAN Fei | National Gold and Diamond Testing Center of China, Shandong Institute of Metrology,Shandong Social Justice Institute of Metrology, Ji’ nan 250014, China | |
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| 中文摘要: |
| 提出了试样经微波消解后用电感耦合等离子体原子发射光谱法(ICP-AES)测定Pd950首饰中汞、铅、镉、铬、砷的分析方法。在120℃温度下，以王水为消解试剂，试样在密闭容器中消解25 min可以完全溶解。汞、铅、镉、铬、砷元素的检出限为0.006~0.15 mg/kg，回收率为92%~116%，RSD为0.07%~1.4%。总分析流程均大大缩短，微波消解前处理方法具有简便、快捷、回收率高、精密度高等优点，能够满足测定Pd950首饰中汞、铅、镉、铬、砷的需要。 |
| 英文摘要: |
| A method for determination of Hg, Pb, Cd, Cr, As in Pd950 jewelry by inductively coupled plasma atomic emission spectrometry (ICP-AES) after microwave digestion was established. The results showed that the sample could be fully dissolved in aqua regia by microwave digestion for 25 min in closed container at 120℃. The detection limit was 0.006~0.15 mg/kg. The recovery rate was 92%~116% and the relative standard deviations (RSD) of the method was 0.07%~1.4%. The microwave digestion method is simple, rapid with high recovery rates and accuracy, and is applicable for the determination of Hg, Pb, Cd, Cr, As in platinum jewelry. |
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