方波阳极溶出伏安法测定饮料中Pb  

Determination of Pb in Beverage by Square Wave Anodic Stripping Voltammetry

作　　者：赵干卿[1] 陆晓菁[2] 宋远志[2] 

机构地区：[1]平顶山学院,河南平顶山467002 [2]江苏大学化学化工学院,江苏镇江212013

出　　处：《平顶山学院学报》2006年第2期71-73,共3页Journal of Pingdingshan University

摘　　要：建立了测定饮料中Pb的新方法.在0.1mol·L^-1 KCl 溶液（pH=2.25）中采用方波阳极溶出伏安法测定Pb.Pb于-588mV产生溶出峰,Pb测定精密度R SD%为0.5%～5.0%,样品加标回收率P%为95.42%～104.5%,Pb的线性范围为0.006～0.4mg ·L^-1.该法操作简便、快速,结果可靠.A new method has been estabilished for the determination of Pb in a beverage. The concentration of Pb in the beverage was detected by square wave anodic stripping voltamrnetry in 0.1 mol·L^- 1 KCl （pH =2.25） solution. The peak of Pb appeared at -588mv （vs. Ag/AgCl （3MKCl））, the percent recoveries （ % ） and precisions（RSD% ） of Pb were 95.4.2 - 104.5 % and 0.5 - 5.0 %, respectively. The linear range of Pb were 0. 006 - 0.4 mg ·l^- 1. This method is very rapid, simple and reliable.

关 键 词：方波阳极溶出伏安法 饮料 PB 

分 类 号：O657.15[理学—分析化学]