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Spectrophotometric determination of zirconium using robinetin

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Summary

The complex formation between zirconium and robinetin has been spectrophotometrically investigated and made use of in the determination of zirconium. The complex has been found to contain zirconium and the flavonol in the molar ratio of 1∶2. It obeys Beer's law up to 3.0 ppm of Zr and its stability constant has been calculated to be l.5×109. The reaction is quite sensitive and selective at high concentrations of hydrochloric acid (sensitivity 0.0045 μg/cm2).

Zusammenfassung

Zur spektrophotometrischen Bestimmung von Zirkonium wird als Reagens Robinetin empfohlen, das mit Zr einen Komplex im Verhältnis 1∶2 (Zr∶Robinetin) bildet. Die Stabilitätskonstante wurde zu 1,5 · 109 bestimmt. Das Beersche Gesetz wird bis zu 3,0 ppm Zr befolgt. In stark Salzsauren Lösungen ist die Reaktion empfindlich und selektiv (Empfindlichkeit: 0,0045 μg Zr/cm2).

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Authors and Affiliations

  1. Department of Chemistry, University of Delhi, Delhi-7, India

    Mohan Katyal, K. C. Trikha & R. P. Singh

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  1. Mohan Katyal
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  2. K. C. Trikha
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  3. R. P. Singh
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Katyal, M., Trikha, K.C. & Singh, R.P. Spectrophotometric determination of zirconium using robinetin. Z. Anal. Chem. 230, 107–111 (1967). https://doi.org/10.1007/BF00510144

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