Sensors 2001, 1(1), 1-12; doi:10.3390/s10100001
Article

The New Theory of Ion-Selective Electrodes

email
Received: 24 April 2001; Accepted: 8 May 2001 / Published: 16 May 2001
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: 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.
Keywords: Ion-selective electrodes; Problems of the former theory; Interpretation of the super Nerstian potential
PDF Full-text Download PDF Full-Text [390 KB, uploaded 20 June 2014 23:29 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

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

AMA Style

Pungor E. The New Theory of Ion-Selective Electrodes. Sensors. 2001; 1(1):1-12.

Chicago/Turabian Style

Pungor, Ernõ. 2001. "The New Theory of Ion-Selective Electrodes." Sensors 1, no. 1: 1-12.

Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert