Ion-Selective Electrodes Using an Ionophore Covalently Attached to Carboxylated Poly(vinyl chloride)

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Abstract

An ion-selective electrode was prepared by using a polymer membrane on which an lonophore had been covalently attached. Specifically, benzo-15-crown-5 was modified chemically to yield 4α-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.

Original languageEnglish (US)
Pages (from-to)1428-1431
Number of pages4
JournalAnalytical Chemistry
Volume62
Issue number14
DOIs
StatePublished - Jul 1990
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry

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