AC-IMPEDANCE PROPERTIES OF ETH1001-BASED CALCIUM-ION SELECTIVE MEMBRANES

被引：13
作者：
COVINGTON, AK
ZHOU, DM
机构：
[1] Department of Chemistry, University of Newcastle upon Tyne, Newcastle upon Tyne
来源：
ELECTROCHIMICA ACTA | 1992年 / 37卷 / 15期
关键词：
CALCIUM ION-SELECTIVE ELECTRODE; POLYVINYL CHLORIDE; POLYMER MEMBRANE; IMPEDANCE SPECTRA; IONOPHORE;
D O I：
10.1016/0013-4686(92)85194-P
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The properties of calcium ion-selective, polyvinyl chloride membranes have been determined from ac impedance spectra. The bulk membrane resistance does not stabilize before 2 days of contact with aqueous solutions, suggesting that the usually adopted overnight conditioning period is too short. The effect of using different plasticisers and ligand/calcium ion ratios in the membrane permits optimization of membrane composition for the chosen ionophore ETH1001.
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收藏
页码：2691 / 2694
页数：4
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