Chromium(III)-selective Electrode Using p-(4-Acetanilidazo)calix[4]arene as an Ionophore in PVC Matrix

Bulletin of the Korean chemical society

Yoon Bo Shim¹  Pankaj Kumar¹ 

关键词: Chromium selective sensor;    Calixarene;    Ion selective electrodes;    Chemical sensor;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A new poly(vinyl chloride) membrane, containing synthesized p-(4-acetanilidazo)calix[4]arene as a membrane carrier, was used to fabricate a chromium(III) selective electrode. The optimum composition of the best performing membrane contained p-(4-acetanilidazo)calix[4]arene:DBBP:NaTPB:PVC in the ratio 10:100:1:100 w/w. This electrode exhibited a near Nernstian slope of 19.8 �? 0.2 mV/decade of activity in the working concentration range of 9.8 �? 10^?7-1.0 �? 10^?1 M. It displayed a stable potential response in the pH range 2.8-5.7. The electrode exhibited a fast response time of less than 14 s and could be used for at least 12 weeks without any considerable divergence in potentials. This electrode showed very good selectivity over most of the common cations including Li⁺, K⁺, Na⁺, Ni²⁺, Co²⁺, Cu²⁺, Sr²⁺, Ba²⁺, Cs⁺, Pb²⁺, Zn²⁺, Mg²⁺, Cd²⁺, Al³⁺, Fe³⁺, and La3+. It could be employed successfully for the determination of Cr(III) ion activity in real samples.

【 授权许可】

Unknown