电解氢化物发生原子荧光法测定镉  

Determination of Cd by electrolytic hydride generation-atomic fluorescence spectrometry

作　　者：杨新安[1] 张王兵[1] 蒋书云[1] 陈丽萍[1] 

机构地区：[1]安徽工业大学化工学院应用化学系,马鞍山243002

出　　处：《分析试验室》2012年第9期71-73,共3页Chinese Journal of Analysis Laboratory

基　　金：安徽省教育厅重点项目(KJ2010A048);安徽工业大学SRTP项目(2011014)资助

摘　　要：通过电解氢化物发生技术结合原子荧光光谱仪,采用自行设计的管式电解池,研究了管状阴极材料以及电解质种类、电解条件等因素对Cd的电解还原氢化物发生情况的影响。方法检出限为0.26μg/L,相对标准偏差为3.3%(n=11)。对标准物质海带及几种海产品中的Cd进行了测定,回收率在93%～110%之间。A new method for the determination of Cd by coupling an electrolytic hydride generation with atomic fluorescence spectrometry was developed. A novel tubular electrolytic cell was used to evaluate the EHG of Cd. The effects of electrolytic conditions such as cathode material, catholyte and interference ions on the EHG have been studied. Under the optimized conditions, the detection limit （3a） and the RSD （n = 11 ） was 0. 26 p^g/L and 3.3% , respectively. This system has been applied satisfactorily to the determination of Cd in certified reference material and seafood. The recoveries of the method were 93% ~ 110%.

关 键 词：电解氢化物发生 原子荧光 镉 管状电池 

分 类 号：O657.3[理学—分析化学]