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。
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.
出处
《贵金属》
CAS
CSCD
北大核心
2015年第4期69-72,共4页
Precious Metals
基金
山东省质量技术监督局科研项目(2011KY02)
