Summary
The possibility of application of gold and palladium as the metal phase of quinhydrone electrodes in coulometric bipotentiometric titrations of bases alone and of some of their two-component mixtures in acetic anhydride was investigated. The effect of activation of these electrodes, by heating in an alcohol flame, on the shape of the titration curve is discussed. The amounts of bases determined were 5.0–10.0 μeq. Errors did not exceed ±2%.
Zusammenfassung
Die Möglichkeit der Verwendung von Gold und Palladium als Metallphase von Chinhydronelektroden bei coulometrischen bipotentiometrischen Titrationen von Basen allein oder Gemischen zweier Basen in Essigsäureanhydrid wurde untersucht. Der Einfluß der Aktivierung dieser Elektroden durch Glühen in einer Alkoholflamme auf die Form der Titrationskurve wurde diskutiert. Die Mengen der analysierten Basen entsprach 5,0–10,0 Mikroäquivalenten. Die Ermittlungsfehler liegen innerhalb ± 2%.
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References
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Bjelica, L.J., Vajgand, V.J. & Velimirović, D.L. Coulometric bipotentiometric titration of bases and their mixtures in acetic anhydride in the presence of two pretreated metal (Au, Pd)- quinhydrone electrodes. Mikrochim Acta 66, 241–246 (1976). https://doi.org/10.1007/BF01220265
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DOI: https://doi.org/10.1007/BF01220265