engleski

A Silver/Silver Sulfide Selective Micro-Electrode Preparated by Chemical Treatment of Silver Wire

The preparation conditions and the performance of a small size Ag/Ag2S selective electrode are described. The analytical behavior of this electrode, made by chemical treatment of a silver wire, is described in terms of potential — concentration curves, standard potential, lifetime and electrode selectivity. A series of electrodes have been prepared and investigated. Their response and selectivity to Ag+ and S2- are measured and compared with those of a commercial Orion silver/sulfide electrode. Several titrations were performed to evaluate the performances of the electrode. The investigated electrode can be used, as a good substitute for the commercial silver/sulfide electrode, in a wide variety of practical analytical systems.

Ag/Ag2S selective electrode; silver wire; potential - concentration curves; standard potential; lifetime and electrode selectivity; response and selectivity to Ag+ and S2-

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