ICP-AES测定铂金饰品抛光灰中铂、钯、金和银

Determination of Platinum,Palladium,Gold and Silver in Polishing Powders of Jewelry by ICP-AES

提出一种 ICP- AES快速测定铂金饰品抛光灰中铂、钯、金、银的分析方法。 5 g样品经灰化处理后 ,王水提取 ,直接测定 ,该方法的检出限 Pt、Pd、Au、Ag分别为 4 6 .5、4 2 .3、10 .4和 5 .1ng·m L-1。回收率为94 .2 %— 10 3.5 %之间。相对标准偏差为 2 .8%— 4 .4 %。

Determination of Pt,Pd,Au and Ag in polishing powders of jewelry by ICP-AES was reported.The method proves to be simple and rapid.The detection limits of this method are 46.5,42.3,10.4 and 5.1ng·mL -1 for Pt,Pd,Au and Ag,and relative standard deviations are 3.7%, 4.4%, 2.8% and 3.2% respectively.Recoveries of standard are in the range of 94.2%—103.5%.