The response of a potentiometric sensor having a silver chloride layer interposed between the electronic conductor and the β″-alumina electrolyte is analysed. The open-circuit voltage is found to be Nernstian in the range 10–10 000 Pa of chlorine, with slight deviations from the theoretically expected values. The setting-up of a diffusion potential due to the formation of a new phase or a solid solution might account for these departures from theory. A normalized function of the output for step-like changes of chlorine pressure is defined. The approach to steady-state e.m.f. values is found to be linear with the square root of time
Mari, C., Barbi, G., Lauricella, A., Narducci, D. (1992). Contribution to the interpretation of the thermodynamic and kinetic behaviour of chlorine gas solid state potentiometric sensors. SENSORS AND ACTUATORS. B, CHEMICAL, 7(1-3), 637-641 [10.1016/0925-4005(92)80378-B].
Contribution to the interpretation of the thermodynamic and kinetic behaviour of chlorine gas solid state potentiometric sensors
MARI, CLAUDIO MARIA;NARDUCCI, DARIO
1992
Abstract
The response of a potentiometric sensor having a silver chloride layer interposed between the electronic conductor and the β″-alumina electrolyte is analysed. The open-circuit voltage is found to be Nernstian in the range 10–10 000 Pa of chlorine, with slight deviations from the theoretically expected values. The setting-up of a diffusion potential due to the formation of a new phase or a solid solution might account for these departures from theory. A normalized function of the output for step-like changes of chlorine pressure is defined. The approach to steady-state e.m.f. values is found to be linear with the square root of time
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