Determination of thallium and cadmium on a chemically modified electrode with Langmuir-Blodgett film of p-allylcalix[4]arene

被引：72

作者：

Dong, HM ^{[1
]}

Zheng, H ^{[1
]}

Lin, L ^{[1
]}

Ye, BX ^{[1
]}

机构：

[1] Zhengzhou Univ, Dept Chem, Zhengzhou 450052, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2006年 / 115卷 / 01期

基金：

中国国家自然科学基金;

关键词：

stripping voltammetry; thallium; cadmium; Langmuir-Blodgett film; calixarenes;

D O I：

10.1016/j.snb.2005.09.017

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A glassy carbon electrode (GCE) coated with Langmuir-Blodgett (LB) film of p-allylcalix[4]arene is described for simultaneous determination of traces of thallium and cadmium in environmental water. The LB film electrode in a 0.1 M KH2PO4 solution shows a linear voltammetric response in the range of 5-250 mu g l(-1) for thallium and 10-300 mu g l(-1) for cadmium. The detection limits of thallium(l) and cadmium(11) are estimated to be 1.0 mu g l(-1) (ca. 5.0 x 10(-9) M) and 2.2 mu g l(-1) (ca. 2.0 x 10(-8) M), respectively. Above all, the indium does not respond to this LB film electrode. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：303 / 308

页数：6