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Electrocapillary potentiometric determination of anionic surfactants in detergents

Elektrokapillare Potentiometrie anionischer Tenside

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Summary

An attempt has been made to use electrocapillarity for potentiometric determinations of anionic surfactants. A sitting mercury drop indicator electrode was successfully used for these titrations. Anionic surfactants should be titrated in a solution of defined ionic strength (0.8% sodium sulphate) at any pH between 3 and 10. A cationic surfactant (Hyamine 1622) should be used as the titrant. Pure anionic surfactants, technical grade anionic surfactants and anionic surfactants in model detergents have all been successfully titrated.

Zusammenfassung

Der Elektrokapillareffekt wurde zur potentiometrischen Bestimmung anionischer Tenside auszunutzen versucht. Als Indikatorelektrode wurde mit Erfolg eine J-förmige Hg-Elektrode (Elektrode mit aufsitzendem Hg-Tropfen) benutzt. Die Titration anionischer Tenside wird in einer Lösung bestimmter Ionenstärke (0,8% Natriumsulfat) und im pH-Bereich 3–10 durchgeführt. Als Titrant verwendet man dazu ein kationisches Tensid (Hyamin 1622). Reine anionische Tenside, technische anionische Tenside und anionische Tenside in einem Modellwaschmittel wurden titriert.

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Authors and Affiliations

  1. Research and Development Institute, Saponia Chemical Industry, Osijek

    Milan Sak-Bosnar & Momir S. Jovanović

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

    Milan Sak-Bosnar & Momir S. Jovanović

Authors
  1. Milan Sak-Bosnar
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  2. Momir S. Jovanović
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Sak-Bosnar, M., Jovanović, M.S. Electrocapillary potentiometric determination of anionic surfactants in detergents. Mikrochim Acta 75, 409–419 (1981). https://doi.org/10.1007/BF01196114

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  • DOI: https://doi.org/10.1007/BF01196114

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