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Extraction and spectrophotometric determination of osmium with 4-(2-pyridylazo)resorcinol

Extraktion und spektralphotometrische Bestimmung von Osmium mit PAR

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Summary

The formation and extraction of osmium complexes with 4-(2-pyridylazo)resorcinol and their application to the spectrophotometric determination of osmium were studied. The procedures for the fast and accurate determination of osmium, based on the reduction of osmium(VIII) to osmium(VI) by ethanol and the spectrophotometric measurement of the osmium(VI)-PAR complex in aqueous ethanol media or in the extract obtained with tetraphenylphosphonium chloride in chloroform, are described. The composition and nature of the complex species measured were determined by solution study and by characterization of the isolated solid compound.

Zusammenfassung

Die Herstellung und Extraktion von Komplexverbindungen des Osmiums mit PAR sowie deren Anwendung zur spektrophotometrischen Bestimmung von Osmium wurden untersucht. Die Arbeitsweise für die rasche und genaue Bestimmung von Osmium, die Reduktion von Os(VIII) zu Os(VI) in wäßrig-ethanolischem Medium oder im Extrakt, der mit chloroformischer Lösung von Tetraphenylphosphonium gewonnen wird, wurden beschrieben. Art und Zusammensetzung der gemessenen Komplexverbindungen wurden durch Untersuchung der Lösungen und der isolierten festen Verbindungen bestimmt.

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Authors and Affiliations

  1. Laboratory of Analytical Chemistry, Faculty of Science, University of Zagreb, Yugoslavia

    M. Siroki & M. Koren

Authors
  1. M. Siroki
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  2. M. Koren
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Siroki, M., Koren, M. Extraction and spectrophotometric determination of osmium with 4-(2-pyridylazo)resorcinol. Mikrochim Acta 79, 75–86 (1983). https://doi.org/10.1007/BF01200012

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  • DOI: https://doi.org/10.1007/BF01200012

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