流动注射-氢化物原子荧光光谱法直接测定海水中的铅  

Direct Determination of Trace Lead in Seawater Samples by Flow Injection-Hydride Generation Atomic Fluorescence Spectrometry

作　　者：程祥圣[1] 杨颖[1] 秦晓光[1] 张勇[1] 张丽旭[1] 

机构地区：[1]国家海洋局东海监测中心,上海市浦东东塘路630号200137

出　　处：《光谱实验室》2005年第6期1245-1248,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：国家海洋局东海分局科技基金资助项目(200104)

摘　　要：提出了以碱性铁氰化钾为氧化剂的铅氢化物体系。采用硝酸作为介质,对原子荧光光谱法测定海水中的铅的条件进行了系统研究。在最佳的测试条件下,测得铅的检出限为0.48μg/L,相对标准偏差为2.4%(n=11)。对海水样品进行了分析,回收率为96.5%—107%。该方法应用于海水样品的分析,取得了令人满意的结果。A method for the determination of lead was developed based on hydride-generation atomic fluorescence spectrometry using potassium ferricyanide in alkaline solution as oxidant and nitric acid as reaction medium. Under the optimal analytical conditions, the detection limit is 0. 48μg/L with the RSD of 2. 4% in 20μg/L P and recovery of 96.5%-107%. The method was applied to the analysis of seawater for lead contents and satisfactory results were obtained.

关 键 词：流动注射 氢化物发生 原子荧光光谱法 海水样品 铅 

分 类 号：O657.31[理学—分析化学]