氢化物——无色散原子荧光法测定地质样品中微量硒及碲

在过去的报告中,我们曾详细地报导了有关氢化物——无色散原子荧光光谱法的实验技术及有关装置。目前,我们已将这个方法应用于化探样品中测定微量砷、锑及铋。两年来,在我们的实验室中已分析了近三万个样品。方法简便、快速。

Determination of Trace Amount of Selenium and Tellurium in Geological Samples by Hydride Generation Nondispersive Atomic Fluorescence Spectrometry

A hydride generation nondispersive atomic fluorescence spectrometricmethod has been developed for determination of trace amount of Se and Tein geological samples. Under the optimum conditions selected by the author,the best attainable detection limits of Se and Te are both 0.3 ng. Ferric chl-pride and thiourea are recommended as the reagents for eliminating interfer-ences. The spectral interference from Bi reported in the literature can becompletely overcome by using Te EDL containing tellurium metal and telluriumbromide. In ordinary samples, no seperation is required.