Gliclazide as novel carrier in construction of PVC-based La(III)-selective membrane sensor

被引：92
作者：
Ganjali, MR
Daftari, A
Rezapour, M
Puorsaberi, T
Haghgoo, S
机构：
[1] Univ Tehran, Dept Chem, Tehran, Iran
[2] Ctr Qual Control Drug, Tehran, Iran
[3] Tarbiatmodarres Univ, Dept Chem, Tehran, Iran
来源：
TALANTA | 2003年 / 59卷 / 03期
关键词：
lanthanum ion-selective electrode; PVC membrane; Gliclazide;
D O I：
10.1016/S0039-9140(02)00573-8
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A PVC-based sensor for La3+ ions based on N-[hexahydrocyclopentapyrol-2((1H)yl)amino]carbonyl]-4-methyl benzene sulfonamide (gliclazide) as a novel carrier was prepared. The electrode exhibits a Nernstian response for La3+ over a wide concentration range (1.0 x 10(-1)-1.0 x 10(-6) M) with a slope of 20.1 mV per decade. The limit of detection is 8.0 x 10(-7) M. The sensor has a very short response time ( < 15 s) and a useful working pH range of 4.0-8.0. The proposed membrane sensor shows excellent discriminating ability towards La3+ ions with regard to several alkali, alkaline earth, transition and heavy metal ions. The electrode was successfully applied for determination of La3+ in binary mixtures. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：613 / 619
页数：7
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