Calixazacrown ethers for copper(II) ion-selective electrode

被引：60

作者：

Park, SJ

Shon, OJ

Rim, JA

Lee, JK

Kim, JS ^{[1
]}

Nam, H

Kim, H

机构：

[1] Konyang Univ, Dept Chem, Nonsan 320711, South Korea

[2] Seoul Natl Univ, Ctr Mol Catalysis, Sch Chem & Mol Engn, Seoul 151742, South Korea

[3] Kwangwoon Univ, Dept Chem, Seoul 139701, South Korea

来源：

TALANTA | 2001年 / 55卷 / 02期

关键词：

calix[4]arene; azacrown ether; transition metal; potentiometry; ion-selective electrode;

D O I：

10.1016/S0039-9140(01)00420-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Five novel 1,3-alternate calix[4]azacrown ethers having 2-picolyl, 3-picolyl, and benzyl unit on the nitrogen atom were synthesized and used as ionophores for transition metal-selective polymeric membrane electrodes. The electrode based on 2-picolyl armed 1,3-alternate calix [4] azacrown ether exhibited Nernstian response toward copper (II) ion over a concentration range (10(-4.5) M-10(-2.5) M). The detection limit was determined as 10(-5) M in pH 7 and the selectivity coefficients for possible interfering cations were evaluated. Anions in the sample solution strongly affected the electrode response. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：297 / 304

页数：8

共 37 条

[1] A phase boundary potential model for apparently "twice-Nernstian" responses of liquid membrane ion-selective electrodes [J].