Next Article in Journal
Affinity sensors in non-equilibrium conditions: highly selective chemosensing by means of low selective chemosensors
Previous Article in Journal
Mediated Electron Transfer at Redox Active Monolayers. Part 3: Bimolecular Outer-Sphere, First Order Koutecky-Levich and Adduct Formation Mechanisms
Article Menu

Export Article

Article of Sensors 2004, 4(1), 14-15.

Open AccessArticle
Sensors 2001, 1(1), 1-12;

The New Theory of Ion-Selective Electrodes

Institute for General and Analytical Chemistry, Technical University, Budapest, Hungary
Received: 24 April 2001 / Accepted: 8 May 2001 / Published: 16 May 2001
Full-Text   |   PDF [390 KB, uploaded 20 June 2014]   |  


The paper discusses the anomalies of the former interpretation of the working mechanism of the ion-selective electrodes. It was thorougly discussed why the Donnan experiment could not be applied as the theoretical background of glass electrodes. It was assumed according to the Donnan interpretation that the measurable potential is produced by the transfer of the primary ion through the membrane. Since the 1960s, the author and coworkers have been investigating the problem of what can be the reason for the potential response of the electrodes. Practical measurements in connection with the response time, surface hindered reactions etc. were interpreted. Furthermore, the energy problems according to the Gibbs theory using two electrode components were investigated. It was established that the electrodes on which chemical reactions may occur with the primary ion have a surface reaction as the chemical basis of the response. For electrodes that work on the principle of the lyotropic series, surface reactions are also involved, but their response is not always Nernstian. The energy demand is covered by the charge separation at the electrodesolution interface. View Full-Text
Keywords: Ion-selective electrodes; Problems of the former theory; Interpretation of the super Nerstian potential Ion-selective electrodes; Problems of the former theory; Interpretation of the super Nerstian potential

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Pungor, E. The New Theory of Ion-Selective Electrodes. Sensors 2001, 1, 1-12.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top