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Conlometric determination of weak bases applying bismuth electrode pair for the end-point detection

Coulometrische Bestimmung von schwachen Basen unter Anwendung eines Wismut-Elektrodenpaars als Indicatorsystem

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Abstract

Tertiäre Amine und Salze organischer Säuren werden in Acetanhydrid mit 5% Essigsäure durch anodische Proton-Erzeugung auf Platin in Gegenwart von Hydrochinon mit Hilfe der biamperometrischen Endpunkttechnik mit einem Wismutelektrodenpaar quantitativ bestimmt. Mengen von 0,5–0,9 mg wurden mit einer mittleren Abweichung von <1% analysiert. Die Ergebnisse stimmten zufriedenstellend mit denen aus thermometrischen und photometrischen Titrationen überein.

Summary

Tertiary amines and salts of organic acids have been quantitatively determined in acetic anhydride with 5% of acetic acid by means of anodic generation of protons on platinum in the presence of hydroquinone, applying a biamperometric end-point detection using an indicating system of bismuth electrodes. Amounts of 0.5–0.9 mg have been analysed with average deviations of <1%. Good agreement was obtained with the results of thermometric and photometric titrations.

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Authors and Affiliations

  1. Faculty of Sciences, Institute of Chemistry, University of Novi Sad, Yugoslavia

    Ferenc F. Gaál & Jasminka S. Siriški

  2. Faculty of Technology and Metallurgy, Institute of Analytical Chemistry, University of Beograd, Yugoslavia

    Momir S. Jovanović & Branislava Dj. Branovački

Authors
  1. Ferenc F. Gaál
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  2. Jasminka S. Siriški
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  3. Momir S. Jovanović
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  4. Branislava Dj. Branovački
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Gaál, F.F., Siriški, J.S., Jovanović, M.S. et al. Conlometric determination of weak bases applying bismuth electrode pair for the end-point detection. Z. Anal. Chem. 260, 361–363 (1972). https://doi.org/10.1007/BF00585259

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  • DOI: https://doi.org/10.1007/BF00585259

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