ION-SELECTIVE ELECTRODES USING AN IONOPHORE COVALENTLY ATTACHED TO CARBOXYLATED POLY(VINYL CHLORIDE)

被引:83
作者
DAUNERT, S
BACHAS, LG
机构
[1] UNIV KENTUCKY,DEPT CHEM,LEXINGTON,KY 40506
[2] UNIV KENTUCKY,CTR MEMBRANE SCI,LEXINGTON,KY 40506
关键词
D O I
10.1021/ac00213a016
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
An Ion-selective electrode was prepared by using a polymer membrane on which an Ionophore had been covalently attached. Specifically, benzo-15-crown-5 was modified chemically to yield 4'-aminobenzo-15-crown-5, which was then attached covalently to carboxylated poly(vinyl chloride). The prepared electrode responded selectively to potassium with a Nernstian slope. This polymer-bound ionophore had an increased lifetime when compared to the one obtained by using a poly (vinyl chloride)-based matrix impregnated with benzo-15-crown-5. © 1990, American Chemical Society. All rights reserved.
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页码:1428 / 1431
页数:4
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