氢化物——原子荧光法测定地球化学样品中的锡

Determination of tin in Geochemical Samples by Hydride Generation Atomic Fluorescence Spectrometry

本文利用了氢化物发生(HG)~原子荧光法(HG-AFS)来分析检测地球化学样品中的锡。通过使用过氧化钠熔融样品,以20g/LKBH4和5g/LKOH作为还原剂,2%的HCl为载流液,研究了不同介质不同酸度及不同工作条件下对分析数据结果的影响,进行了共生元素的干扰情况试验。本测试方法的检出限为0.5ug/L,回收率达到了98%~103%,精密度RSD(n=12)为2.6%~4.1%。

In this paper,hydride generation(HG)~atomic fluorescence spectrometry(HG-AFS)is used to determine tin in geochemical samples.By using sodium peroxide to melt samples,20g/LKBH4 and 5g/LKOH were used as reducing agent and 2%HCl was used as carrier fluid.The effects of different acidity and different working conditions on the results of analysis data were studied,and the interference of the symbiotic elements was tested.The detection limit of this test method is 0.5ug/L,the recovery rate is 98%~103%,and the precision RSD(n=12)is 2.6%~4.1%.