A lead ion-selective electrode based on a calixarene carboxyphenyl azo derivative

被引：79
|
作者：
Lu, JQ
Chen, R
He, XW [1 ]
机构：
[1] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China
[2] Hubei Normal Univ, Dept Chem, Huangshi 435002, Peoples R China
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2002年 / 528卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
calix[4]arene derivative; lead; ion-selective electrode;
D O I：
10.1016/S0022-0728(02)00840-9
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A lead ion-selective electrode was prepared with polymeric membranes based on a calixarene derivative containing carboxyphenyl azo groups. The electrode gave good Nernstian responses of 29.4 mV per decade for lead in the activity range 10(-6)-10(-2) M. The limit of detection reached 10(-6.1) M and exhibited high selectivity towards alkali, alkaline earth and transition metal ions. Molecular modeling revealed that the complex exists in the cone conformation with the lead ion being bound by the heteroatom group (N=N) on the upper rim of the derivative. (C) 2002 Published by Elsevier Science B.V.
引用
收藏
页码：33 / 38
页数：6
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