原子荧光光谱法测定烟草中的硒

Analysis of Selenium in Tobacco with Atomic Fluorescence Spectrometry

摘要: 建立了氢化物发生-原子荧光光谱(HG_AFS)法测定烟草及烟草制品中微量硒的方法,即先用4体积HNO₃+1体积HClO₄混合酸消化烟草样品,而后用HG_AFS仪测定消化液中的硒含量。该法的线性范围为0~250μg/L,检出限0.18μg/L,RSD < 6.0%,回收率为92.5%~97.5%。

Abstract: A method for determination of microelement selenium in tobacco with hydride generation-atomic fluorescence spectrometry (HG-AFS) was developed, tobacco sample was digested by HNO₃-HClO₄(v/v: 4/1), then the resultant digestion solution was determined with HG-AFS.The recovery of selenium was 92.5%-97.5%with RSD < 6.0% in the linear range of 0-250μg/L, the detection limit of this method was 0.18μg/L.