The Determination of Trace Selenium in Samples by Hydride Generation─Atomic Fluorescence Spectrometry

In this thesis, a method was developed for the determination of trace selenium in biological, agricultural and environmental samples by hydride generation ─ atomic fluorescence spectrometry. The factors that affected the determination of selenium such as the concentration of HCl, KBH 4, the instrument parameters and coexistent elements were optimized. Under the optimum conditions, the detection limits of the method was 0.32 μg/L, the relative standard deviation was less than 0.4 %, the recovery rate of samples were ranged from 93 % to 102 %.