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Reproducibility of working electrodes in voltammetry
Josypčuk, Bohdan ; Heyrovský, Michael
In voltammetry the working electrode is the source of signal from which the due information is gained. A transition from the dropping mercury electrode to any kind of stationary electrode is inevitably accompanied by worsened reproducibility of measurements, the transition to the hanging mercury drop electrode is accompanied by a certain instrumental complication. When solving a concrete task, the precision of reproducibility of measurements often becomes the decisive factor for selecting a particular type of working electrode, or for taking voltammetry as the method of choice. This work is the beginning of a wider study which includes comparison of different working electrodes and finding of optimal conditions guaranteed reproducible measurements of various electrode processes (reduction, oxidation, accumulation, adsorption and catalysis).
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Electrochemical behavior of alkali metal alcoholates on mercury
Heyrovský, Michael
In chemistry in general, and in organic chemistry and biochemistry in particular, sodium borohydride is a frequently used reducing agent of medium strength. If we follow the products of borohydride reduction by an electrochemical method, we may be surprised by the appearance on the polarization curves of current due to catalytic evolution of hydrogen.
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