氢化物发生原子荧光法测定紫菜中铅含量  

Determination of lead in laver by hydride generation atomic fluorescence spectrometry

作　　者：邹菁[1] 金焰 张平[1] 刘安昌[1] 

机构地区：[1]武汉化工学院分析测试中心,湖北武汉430074 [2]黄石市环保科研所,湖北黄石435000

出　　处：《武汉化工学院学报》2005年第5期5-6,共2页Journal of Wuhan Institute of Chemical Technology

摘　　要：应用快速、灵敏的氢化物发生原子荧光法测定了紫菜中铅的含量,该法基于紫菜样品中铅用HNO3和HClO4浸提,K3Fe(CN)6+H2C2O4氧化掩蔽后直接测定,样品回收率为96.0%～101.5%,方法的检出限为0.68 μg/L,RSD为3.0%.A rapid,high sensitivity method has been developed for the determination of Pb in laver samples by using hydride generation atomic fluorescence spectrometry. The method is based on the leaching of Pb from laver samples with HNO3＋HClO4, and followed by direct determination of the corresponding hydrides oxidized with K3Fe（CN）6 and masked with H2C2O4. The results show that the recovery is 96.0% 101. 5%, and the detection limit （3σ） is 0. 68 μg /L, and the average relative standard deviation is 3.0%.

关 键 词：紫菜 铅 氢化物发生-原子荧光 

分 类 号：O657.31[理学—分析化学]