SUBSTITUTED COBALT PHTHALOCYANINE COMPLEXES AS CARRIERS FOR NITRITE-SENSITIVE ELECTRODES

被引：42

作者：

LI, JZ ^{[1
]}

PANG, XY ^{[1
]}

YU, RQ ^{[1
]}

机构：

[1] HUNAN UNIV,DEPT CHEM & CHEM ENGN,CHANGSHA 410082,PEOPLES R CHINA

来源：

ANALYTICA CHIMICA ACTA | 1994年 / 297卷 / 03期

基金：

中国国家自然科学基金;

关键词：

ION SELECTIVE ELECTRODES; UV-VISIBLE SPECTROPHOTOMETRY; CARRIERS; NITRITE; PHTHALOCYANINES; POLY(VINYL CHLORIDE);

D O I：

10.1016/0003-2670(94)00239-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new poly(vinyl chloride) membrane electrode based on lipophilic 2,9,16,23-tetra-tert-butylphthalocyanine is described which demonstrates excellent selectivity toward the nitrite ion. The resulting electrodes displayed a near-Nernstian response for nitrite in the concentration range 10(-5)-0.1 M with the selectivity sequence nitrite > thiocyanate > iodide > perchlorate > bromide > nitrate > chloride. The UV/Vis spectra and a.c. impedance studies showed that the excellent selectivity for nitrite was related to the unique interaction between the central cobalt ion and nitrite.

引用

页码：437 / 442

页数：6

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