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Gravimetric determination of tungsten(VI) in presence of other ions and its application to alloy steel

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Summary

N-o-Tolyl-o-methoxybenzohydroxamic acid has been used for the gravimetric determination of tungsten(VI) by direct weighing of the complex. Tungsten(VI) is quantitative precipitated from 0.1 1.2M hydrochloric acid medium. The complex (dried at 110–120°) has the definite composition WO2(C15H14NO3)2. The reagent is sensitive and highly selective. Tungsten(VI) can be estimated in presence of several foreign ions and the method is satisfactory for analysing alloy steels.

Zusammenfassung

N-o-Tolyl-o-methoxybenzohydroxamsäure wurde zur gravimetrischen Bestimmung von Wolfram(VI) durch direkte Wägung der Komplexverbindung verwendet. W(VI) wird aus 0,1 bis 1,2M Salzsäure quantitativ gefällt. Der bei 110–120° getrocknete Komplex hat die Zusammensetzung WO2 (C15H14NO3)2. Das Fällungsreagens ist empfindlich und sehr selektiv. W(VI) kann in Gegenwart anderer Ionen bestimmt werden. Die Methode eignet sich für die Stahlanalyse.

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Authors and Affiliations

  1. Department of Chemistry, Ravishankar University, Raipur, 492.002, M. P., India

    B. S. Chandravanshi & V. K. Gupta

Authors
  1. B. S. Chandravanshi
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  2. V. K. Gupta
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Chandravanshi, B.S., Gupta, V.K. Gravimetric determination of tungsten(VI) in presence of other ions and its application to alloy steel. Mikrochim Acta 70, 511–517 (1978). https://doi.org/10.1007/BF01197103

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  • DOI: https://doi.org/10.1007/BF01197103

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