Summary
The preparation and usability of a sulphide ion-selective microelectrode, prepared by chemical pretreatment of silver wire with Hg2+ and sulphidization in alkaline sulphide solution is described. The electrode is suitable for direct potentiometric measuring of sulphide in alkali solutions of concentrations down to 4×10−7 mol/l. It can be used for the potentiometric measurement of various thiocompounds in alkali and neutral media. The 15 min required for each chemical treatment are enough for the preparation of the described electrode.
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Dobcnik, D., Gomiscek, S. & Stergulec, J. Preparation of a sulphide ion-selective microelectrode with chemical pretreatment of silver wire in Hg(II) solution. Fresenius J Anal Chem 337, 369–371 (1990). https://doi.org/10.1007/BF00322213
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DOI: https://doi.org/10.1007/BF00322213