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SOLID POTENTIOMETRIC PH-ELECTRODE
Kreuer, Klaus-Dieter
Kreuer, Klaus-Dieter
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Issue Date
1989
Submitted date
2023-12-06
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Abstract
Potentiometric pH-glass electrodes are among the most reliable so far known. Most remaining disadvantages (e.g. limited operating temperature, minimum size) stem from their aqueous component (reference buffer). The purpose of this investigation is therefore to maintain glass as a menbrane with outstandingly good sensing properties but to replace the reference buffer, including the Ag/AgCl electrode, by a solid contact providing a reversible transition from the ionic to the electronic part of the sensor The problems in making such a contact are discussed in terms of thermodynamic and kinetic parameters. The properties of glass electrodes contacted with the materials belonging to the Li, Ag, I ternary system are presented. They are compared with those of conventional pH-electrodes and pH-FETs. The advantages arising from the chemical stability of the contact with the glass membrane are outlined.
Citation
Biosensors : applications in medicine, environmental protection and process control, 193 - 198
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Type
Book chapter
conference paper
conference paper
Language
en
Description
Series/Report no.
GBF monographs ; Volume 13
ISSN
0930-4320
EISSN
ISBN
0895739550
3527280324
3527280324
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License
Attribution-NonCommercial-ShareAlike 4.0 International