Electrochemical and thermal behaviour of calcium-selective membranes

被引：16

作者：

Covington, AK ^{[1
]}

Totu, E ^{[1
]}

机构：

[1] INST MICROTECHNOL,BUCHAREST 72225,ROMANIA

来源：

ANALYST | 1996年 / 121卷 / 12期

关键词：

calcium ion-selective electrodes; ion-selective field effect transistors; polyimide; polymer plasticizers;

D O I：

10.1039/an9962101811

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An ion-selective membrane based on a polyimide polymeric matrix plasticized with diethylene glycol dibenzoate and containing calcium synthetic ionophores was used to obtain a potentiometric Ca2+ sensor. It gives a linear response over the pCa range 1-5 with a slope of 27.4 mV (pCa)(-1). The sensor can be used for the pH range 3-8.5. The calcium-selective membranes were characterized in terms of their surface morphology and the structural parameter, the glass transition temperature. The ac impedance and FTIR analysis of the polyimide-based polymeric membrane were also studied.

引用

页码：1811 / 1815

页数：5

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