How to understand the response mechanism of ion-selective electrodes.
The present study breaks with the earlier mechanism of electrode potential on basis of experimental investigations and theoretical considerations. It rejects that the transport through the membrane produces the electrode potential and definitely proves that the electrode potential is created via surface chemisorption; i.e., the electrode potential is produced by a surface reaction. The reaction centres can be acid-base groups or complex formation groups (e.g., valinomycin or other alkaline earth metal complexing ligands.
Pungor
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Institute for General and Analytical Chemistry, Technical University, Budapest, Hungary.