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The behaviour of the silver sulphide precipitate-based ion-selective electrode in the low concentration range

✍ Scribed by E.G. Harsányi; K. Tóth; E. Pungor

Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
913 KB
Volume
161
Category
Article
ISSN
0003-2670

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✦ Synopsis

The anomalous behaviour of the precipitate-based silver sulphide ion-selective electrode in the low concentration range of silver and sulphide ions is described. The excess of silver ion at the electrode surface, caused by adsorption or oxidation, is responsible for the deviations from the ideal Nernstian response. The adsorption/desorption processes were studied in a microcell by using combined potentiometric and atomic absorption measurements. The oxidation-reduction processes were studied by using polarized electrodes.

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