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Amperometric determination of calcium as selenite

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Summary

An amperometric titration of calcium with selenite is described. Barium, strontium, and other cations forming insoluble selenites interfere, but magnesium does not. The method is rapid and suitable for routine analysis, the error being less than 10 parts per 1000 over the range 50 to 70 mg of calcium.

Zusammenfassung

Ein amperometrisches Titrationsverfahren für Calcium mit Selenit wurde beschrieben. Barium, Strontium und andere Kationen, die unlösliche Selenite bilden, stören, nur Magnesium nicht. Das Verfahren ist rasch und für Routineanalysen geeignet. Im Bereich zwischen 50 und 70 mg Calcium ist der Fehler geringer als 1% relativ.

Résumé

On décrit un titrage ampérométrique du calcium par l'ion sélénite. Le baryum, le strontium et les autres cations formant des sélénites insolubles interfèrent, excepté le magnésium. La méthode est rapide et convient à l'analyse en série, l'erreur étant inférieure à 10 parties pour 1000 dans le domaine de 50–70 mg de calcium.

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Authors and Affiliations

  1. Division of Analytical Chemistry, Banaras Hindu University, Varanasi-5, India

    G. S. Deshmukh, O. P. Asthana & P. A. Rajan

Authors
  1. G. S. Deshmukh
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  2. O. P. Asthana
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  3. P. A. Rajan
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Deshmukh, G.S., Asthana, O.P. & Rajan, P.A. Amperometric determination of calcium as selenite. Mikrochim Acta 53, 100–104 (1965). https://doi.org/10.1007/BF01218740

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  • DOI: https://doi.org/10.1007/BF01218740

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