Chronopotentiometric method for the assessment of ionophore diffusion coefficients in solvent polymeric membranes

Sándor Bodor, Justin M. Zook, Erno Lindner, K. Tóth, R. Gyurcsányi

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

A chronopotentiometric method is proposed for the determination of the diffusion coefficients of free ionophores in solvent polymeric membranes. For the pH sensitive chromoionophore ETH 5294, the method was shown to give diffusion coefficients that correlate well with those assessed by both optical and chronoamperometric methods. The limit of applicability of the chronoamperometric and chronopotentiometric methods in terms of membrane composition and experimental parameters has been identified. The chronopotentiometric method was successfully used to determine the diffusion coefficients of eight ionophores and proved to be more robust and more widely applicable than the previously reported chronoamperometric and optical methods.

Original languageEnglish
Pages (from-to)171-179
Number of pages9
JournalJournal of Solid State Electrochemistry
Volume13
Issue number1
DOIs
Publication statusPublished - Jan 2009

Fingerprint

Ionophores
Polymeric membranes
diffusion coefficient
membranes
optics
Membranes
Chemical analysis

Keywords

  • Calcium
  • Chronopotentiometry
  • Diffusion coefficient
  • Ion-selective electrode
  • Lead ionophore
  • Plasticized PVC membranes
  • Potassium
  • Silver
  • Sodium

ASJC Scopus subject areas

  • Electrochemistry
  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Materials Science(all)

Cite this

Chronopotentiometric method for the assessment of ionophore diffusion coefficients in solvent polymeric membranes. / Bodor, Sándor; Zook, Justin M.; Lindner, Erno; Tóth, K.; Gyurcsányi, R.

In: Journal of Solid State Electrochemistry, Vol. 13, No. 1, 01.2009, p. 171-179.

Research output: Contribution to journalArticle

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