Amperometric sensor for simultaneous determination of Cd2+ and Pb2+

被引：2

作者：

Hu, SS ^{[1
]}

Wu, KB ^{[1
]}

Yi, HC ^{[1
]}

Cui, DF ^{[1
]}

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

来源：

INTERNATIONAL CONFERENCE ON SENSOR TECHNOLOGY (ISTC 2001), PROCEEDINGS | 2001年 / 4414卷

关键词：

sensor; determination; Cd2+; Pb2+;

D O I：

10.1117/12.440186

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a kind of amperometric sensors for simultaneous determination of Cd2+ and Pb2+ was investigated. Cd2+ and Pb2+ are firstly deposited on the surface of the sensors at -1.20 V(vs. SCE) and then reduced. In the following step, reduced Cd and Pb are oxidized by scanning the potential towards a positive direction. The experimental parameters, which influence sensitivity and detection limit, such as supporting electrolyte and pH values, accumulation potential and accumulation time, scan rate, were examined. The mechanism as to the voltammetric responses of this sensor was discussed. This sensor has following advantages: easy and convenient fabrication, low cost, low detection limit and fast response. The detection limits are 5x10(-11) mol/L for Cd2+ and 8x10(-11) mol/L for Pb2+.

引用

页码：197 / 199

页数：3

共 7 条

[1] THE APPLICATION OF CHEMICALLY MODIFIED ELECTRODES IN ANALYTICAL-CHEMISTRY [J].