氢化物原子荧光法测定废水中的铅  

Determination of Trace Lead in Wastewater Samples by Hydride Generation-Atomic Fluorescence Spectrometry

作　　者：陈静[1] 黄玉明[2] 

机构地区：[1]西南大学化学化工学院,重庆400715 [2]三峡库区生态环境教育部重点实验室,重庆400715

出　　处：《西南大学学报（自然科学版）》2008年第3期162-164,共3页Journal of Southwest University(Natural Science Edition)

基　　金：重庆市自然科学基金重点项目资助(CSTC2004BA7019);国家科技攻关西部引导项目(2003BA869C);重庆市重大科技专项(CSTC2006AA7003)

摘　　要：建立了废水中铅的氢化物发生原子荧光分析方法，优化了铁氰化钾、KBH4、氢氧化钠、草酸钠及盐酸浓度，获得了满意的分析条件．在优化的实验条件下，原子荧光强度在0-100μg／L范围内与铅浓度呈现良好的线性关系，方法检出限为0.44μg/L，对40μg／L的铅标准溶液进行11次平行测定，相对标准偏差（RSD）为1.6％，将本法用于废水中铅的测定，获得满意结果。A hydride generation-atomic fluorescence spectrometric detection method has been developed for the determination of lead in wastewater. The concentrations of potassium ferricyanide, KBH4, sodium hydroxide, sodium oxalate and hydrochloric acid were optimized and satisfactory analysis conditions identi-fied. Under the optimized experiment conditions, the atomic fluorescence intensity was in a linear relation- ship to lead concentration in the range of 0-100 mg/L with the detection limit（3σ） of 0.44 mg/L. The rel- ative standard deviation was 1.6%（n=ll） for 40μg/L lead standard solution. The proposed method has been applied successfully to the analysis of lead in environmental wastewater samples.

关 键 词：铅 废水 原子荧光法 

分 类 号：O657[理学—分析化学]