EVALUATION OF AN AMMONIUM IONOPHORE FOR USE IN POLY(VINYL CHLORIDE) MEMBRANE ION-SELECTIVE ELECTRODES - SOLVENT MEDIATOR EFFECTS

被引：46

作者：

GHAURI, MS

THOMAS, JDR

机构：

来源：

ANALYST | 1994年 / 119卷 / 11期

关键词：

AMMONIUM ION-SELECTIVE ELECTRODE; AMMONIUM IONOPHORE; POLY(VINYL CHLORIDE) ION-SELECTIVE ELECTRODE; NONACTIN; SOLVENT MEDIATOR;

D O I：

10.1039/an9941902323

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A macrotetrolide nonactin-based ammonium ionophore (AI) preparation containing 25% nonactin optimized for use in liquid membrane ion-selective electrodes was investigated for its possible use in poly(vinyl chloride) (PVC) matrix membrane-type electrodes. Nine different plasticizing solvent mediators were employed in the ammonium ion-selective membranes with PVC and the AI preparation. Near Nernstian responses cr ere observed in aqueous solution with electrodes fabricated with dioctyl sebacate-, 2-nitrophenyl phenyl ether-, dibutyl sebacate-, trioctyl phosphate-, dioctyl adipate-, dioctyl phenyl phosphonate- and 2-nitrophenyl octyl ether-plasticized membranes. The responses of these electrodes were found to improve in the presence of a background concentration of non-interfering calcium ions.

引用

页码：2323 / 2326

页数：4

共 13 条

[1]

AMMANN D, 1983, ION SEL ELECTRODE R, V5, P3

[2] PVC MATRIX MEMBRANE ION-SELECTIVE ELECTRODES - CONSTRUCTION AND LABORATORY EXPERIMENTS [J].