|
|||||
|
|
| PVC碳糊修饰电极测定Pb2+ | |
| 引用本文： | 罗利军,叶艳青,邹小勇.PVC碳糊修饰电极测定Pb2+[J].云南大学学报(自然科学版),2009,31(1):69-73. |
| 作者姓名： | 罗利军 叶艳青 邹小勇 |
| 作者单位： | 1. 云南民族大学, 化学与生物技术学院, 云南 昆明, 650031; 2. 中山大学, 化学与化学工程学院, 广东 广州, 510275 |
| 摘 要： | 介绍了一种用PVC碳糊电极测定Pb2+的方法.该法在开路电路条件,富集介质为0.1 mol/L KNO3(pH 11.0),检测底液为0.15 mol/L HNO3.用微分脉冲阳极溶出伏安法扫描,有一灵敏Pb氧化峰出现,峰电位为-0.496 V(vs.Ag/AgCl),溶出峰电流与Pb2+在1.0×10-7～2~2.0×10-5mol/L浓度范围内成很好的线性关系,线性相关系数为0.9960,检出限为5.0×10-8mol/L. |
| 关 键 词： | PVC-碳糊电极 微分脉冲伏安法 铅 |
| 收稿时间： | 2008-8-25 |
Determination of lead with PVC paste carbon electrode |
|
| LUO Li-jun,YE Yan-qing,ZOU Xiao-yong.Determination of lead with PVC paste carbon electrode[J].Journal of Yunnan University(Natural Sciences),2009,31(1):69-73. | |
| Authors: | LUO Li-jun YE Yan-qing ZOU Xiao-yong |
| Institution: | 1. Department of Chemistry, Yunnan Nationalites University, Kunming 650031, China; 2. School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China |
| Abstract: | The determination of lead with PVC paste carbon electrode(PVC-CPE) is presented.Under open circuit conditions,the PVC-CPE was soaked in an aqueous solution containing Pb2+(0.1mol/L KNO3 at pH11.0),then was scanned by a differential pulse voltammetry in the solution of HNO3 0.15mol/L.The anodic stripping votummogram was recorded,and an anodic peak at-0.496V(vs.Ag/AgCl) was observed.The detection limit was 5.0×10-8mol/L.The linear range was 1.0×10-7—2.0×10-5mol/L,and linear correlation coefficent was 0.9960. |
| Keywords: | |
| 点击此处可从《云南大学学报(自然科学版)》浏览原始摘要信息 | |
| 点击此处可从《云南大学学报(自然科学版)》下载免费的PDF全文 | |