摘要
本文建立了氢化物发生-原子荧光光谱法测定中草药中的微量硒的分析方法。研究了仪器的工作条件、试剂对硒原子荧光强度的影响及硒(Ⅵ)的还原条件,探讨了共存离子对硒测定的干扰和消除方法,方法的检出限为0.21μg·L^(-1)。利用本方法成功地测定了10种中草药中的微量硒,回收率为95％～105％。方法简便、快速、灵敏、准确。
A method for the determination of selenium by hydride generation atomic fluorescence spectrometry (HG-AFS) was proposed in this paper. The experimental conditions including the temperature of atomizer, height of atomizer, lamp current, flow rate of carrier gas, concentration of KBH4, and acidic medium that affect the generation of hydride and the sensitivity of the method were investigated and optimized. The influence of coexisting foreign ions on the determination of selenium was also investigated. The detection limit of the proposed method was found to be 0.21 ng.mL(-1). The proposed method was successfully applied to the determination of selenium in ten kinds of Chinese herbs, and the recoveries were in the range of 95%-105%.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2003年第2期368-370,共3页
Spectroscopy and Spectral Analysis
关键词
氢化物发生
原子荧光光谱法
测定
中草药
硒
分析
hydride generation
atomic fluorescence spectrometry
Chinese herbs
selenium
