线性扫描阳极溶出伏安法测定微量银  

DETERMINATION OF TRACES OF SILVER BY LINEAR SCANNING ANODIC STRIPPING VOLTAMMETRY

作　　者：徐斌[1] 邹欣平[1] 方正东[1] 乐丽萍[1] 

机构地区：[1]湖北师范学院化学与环境工程系,黄石435002

出　　处：《理化检验（化学分册）》2005年第9期654-655,657,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：以玻碳电极为工作电极,建立了线性扫描阳极溶出伏安法测定微量银的分析方法.在0.1 mol·L-1HNO3-KNO3和0.04 g·L-1聚乙烯醇的底液中,于+0.33 V处有一灵敏的氧化峰,峰电流与银离子浓度在0.01～0.40 mg·L-1范围内有良好的线性关系,检出限为5.0μg·L-1,方法应用于电镀废液、铜精矿、废照相胶卷样品中微量银的测定.In this paper, a new method for the determination of traces of silver was reported. In a base solution of 0. 1 mol . L^-1 HNO3-KNO3 and 0.04 g . L^-1 polyethene glycol, a sensitive oxidation peak of Ag was observed by linear scanning stripping voltammetry. The peak potential is ＋0.33 V （vs, SCE）, Linearity between the peak currents and concentrations of Ag^＋ was obtaied in the range of 0. 01-0. 40 mg. L^-1. The detection limit was found to be 5.0μg · L^-1.

关 键 词：阳极溶出伏安法 银 电镀废液 铜精矿 废照相胶卷 

分 类 号：O657.1[理学—分析化学]