Plasticized Poly(vinyl chloride) Properties and Characteristics of Valinomycin Electrodes. Current-Time Responses to Voltage Steps

Michael L. Iglehart, Richard P. Buck, György Horvai, Ernö Pungor

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Approximate analysis of current-time transients in the Kval+ion-carrier system can be done for short- and long-time responses. The whole transport problem is nonlinear, but good approximations are possible for fixed-site membranes. A unique value of Dval, calculated from short- and from long-time data, agrees with the steady-state value already reported. There is no evidence for K+hopping; motion of Kval+from fixed site-to-site with back diffusion of free valinomycin is sufficient to explain transient and steady-state responses.

Original languageEnglish
Pages (from-to)1018-1022
Number of pages5
JournalAnalytical Chemistry
Volume60
Issue number10
DOIs
Publication statusPublished - May 1 1988

ASJC Scopus subject areas

  • Analytical Chemistry

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