Responses of H+ selective solvent polymeric membrane electrodes fabricated from modified PVC membranes

Ernö Lindner, Vasile V. Cosofret, Robert P. Kusy, Richard P. Buck, Thomas Rosatzin, Ulrich Schaller, Wilhelm Simon, Judit Jeney, Klára Tóth, Ernö Pungor

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

Potentiometric responses of a novel class of pH sensitive ionophores, namely several phenoxazine derivatives, were tested in different modified PVC matrices. The ionophores were compounded into liquid membranes as usual or were covalently coupled to the polymeric matrix. The general analytical performance of the membranes and other membrane characteristics (i.e., resistance and response time, as measures of membrane decomposition or structural changes) were followed in time. The transient responses of membranes with mobile ionophores in high molecular weight (HMW) and carboxylated PVC (PVC-COOH) were compared to those with immobilized ionophores. The response time of membranes with immobilized ionophores was found to be between those with mobile ionophores in HMW (fast response) and PVC-COOH (sluggish response). Accordingly, the rate of response was correlated primarily to the -COOH content of the membranes.

Original languageEnglish
Pages (from-to)957-967
Number of pages11
JournalTalanta
Volume40
Issue number7
DOIs
Publication statusPublished - Jul 1993

    Fingerprint

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Lindner, E., Cosofret, V. V., Kusy, R. P., Buck, R. P., Rosatzin, T., Schaller, U., Simon, W., Jeney, J., Tóth, K., & Pungor, E. (1993). Responses of H+ selective solvent polymeric membrane electrodes fabricated from modified PVC membranes. Talanta, 40(7), 957-967. https://doi.org/10.1016/0039-9140(93)80151-G