氢化物发生—无色散原子荧光光谱法测定地球化学样品中微量铅

Determination of Micro Amount Pb in Geochemical Samples by Hydride Generation Nondisoersive AFS

拟定了用射频无极放电灯,氢化物发生无色散原子荧光光谱测定地球化学样品中的微量铅的方法。干扰离子的影响通过加入氧化剂(NH)SO和酒石酸抑制或清除,提高了测定灵敏度,方法简便、快速,检出限为5.3×10^(-10)g,对ppb级Pb含量样品测定,R.S.D为5.6%。

The determination of micro amounts of lead in geochemical samples by nondi-spersive atomic fluorescence spectrometry using hydride generation technique has been investigated. (NH4)2S2O8 and tartaric acid were added to suppress Interferences and increase the sensitivity. The method brings the detection limit down to 5.3×10^(-10)g with precision of RSD 5.6%, The present method is simple and rapid with satisfactory results.