A1 Refereed original research article in a scientific journal
Sensitivity and Selectivity of Ion-Selective Electrodes Interpreted Using the Nernst-Planck-Poisson Model
Authors: Jasielec JJ, Mousavi Z, Granholm K, Sokolski T, Lewenstam A
Publisher: AMER CHEMICAL SOC
Publication year: 2018
Journal: Analytical Chemistry
Journal name in source: ANALYTICAL CHEMISTRY
Journal acronym: ANAL CHEM
Volume: 90
Issue: 15
First page : 9644
Last page: 9649
Number of pages: 6
ISSN: 0003-2700
DOI: https://doi.org/10.1021/acs.analchem.8b02659
Abstract
The Nernst-Planck-Poisson model is used for modeling the sensitivity and selectivity of ion-selective electrodes (ISEs) with plastic membranes. Two pivotal parameters characterizing ISE response are in focus: sensitivity and selectivity. An interpretation of sensitivity, which considers the concurrent influence of anions and cations on the ISE slope, is presented. The interpretation of selectivity shows the validity and limits of approaches hitherto taken to measure the true (unbiased) selectivity coefficient. The validity of more idealized interpretations by the diffusion-layer model is conceived.
The Nernst-Planck-Poisson model is used for modeling the sensitivity and selectivity of ion-selective electrodes (ISEs) with plastic membranes. Two pivotal parameters characterizing ISE response are in focus: sensitivity and selectivity. An interpretation of sensitivity, which considers the concurrent influence of anions and cations on the ISE slope, is presented. The interpretation of selectivity shows the validity and limits of approaches hitherto taken to measure the true (unbiased) selectivity coefficient. The validity of more idealized interpretations by the diffusion-layer model is conceived.
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