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Spectrophotometric determination of cobalt with gluconic acid

Spektralphotometrische Bestimmung von Kobalt mit Hilfe von Gluconsäure

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Zusammenfassung

Die vorgeschlagene Methode verwendet Gluconsäure als farbbildendes Reagens. Untersucht wird der Einfluß verschiedener Parameter auf die Absorption des Kobalt(II)-Gluconsäure-Komplexes. Das Beersche Gesetz gilt im Bereich von 5,33–53,3 μg Co2+/ml. Die Messung der Absorption erfolgt bei 330 nm. Das Molverhältnis des Komplexes beträgt 1∶1.

Summary

A new spectrophotometric method is proposed for determining cobalt using gluconic acid as a chromogenic reagent. The parameters fundamentally affecting the absorbance of the complex are studied and obeyance of Beer's law between 5.33 and 53.3 μg of Co2+/ml has been found. Measurements have to be carried out at 330 nm. The complex is formed in the molar ratio 1∶1.

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References

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Authors and Affiliations

  1. Department of Analytical Chemistry, Faculty of Sciences, University, Spain

    F. Bermejo Martinez & G. Brañas Miguez

  2. Analytical Chemistry Section of H.R.S.C., Santiago de Compostela, Spain

    F. Bermejo Martinez & G. Brañas Miguez

Authors
  1. F. Bermejo Martinez
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  2. G. Brañas Miguez
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Bermejo Martinez, F., Brañas Miguez, G. Spectrophotometric determination of cobalt with gluconic acid. Z. Anal. Chem. 253, 353–354 (1971). https://doi.org/10.1007/BF00426347

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  • DOI: https://doi.org/10.1007/BF00426347

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