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A new sensitive and specific test for cobalt

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Summary

The p-nitrophenylhydrazone of 3-isonitrosopentane-2-one gives in ammoniacal solution a red coloration with cobalt, which provides a sensitive and specific test. Cyanide as well as a high concentration of ammonium salts prevent the test. Palladium, silver, nickel, copper and most common cations and anions do not interfere.

Zusammenfassung

Dasp-Nitrophenylhydrazon von 3-Isonitrosopentan-2-on gibt in ammoniakalischer Lösung mit Kobalt eine Rotfärbung, die dessen empfindlichen und spezifischen Nachweis ermöglicht. Cyanid sowohl wie eine hohe Ammoniumsalzkonzentration verhindern die Probe. Palladium, Silber, Nickel, Kupfer und die meisten der gewöhnlichen Kationen und Anionen verursachen keine Störung.

Résumé

Lap-nitrophenylhydrazone de l'isonitroso-3 pentanone-2 donne en solution ammoniacale une coloration rouge avec le cobalt que l'on utilise comme essai sensible et spécifique. Les cyanures, ainsi que de fortes concentrations en sels de l'ammonium, gênent l'essai. Le palladium, l'argent, le nickel, le cuivre et les cations et anions les plus fréquents n'interfèrent pas.

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Literature

  1. F. Feigl andD. Goldstein, Analyst81, 709 (1956).

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  2. V. D. Anand andG. S. Deshmukh, Naturwiss23, 648 (1956).

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  3. G. S. Deshmukh, V. D. Anand, andC. M. Pandey, Ph. D. Thesis ofV. D. Anand, Banaras Hindu University, 1960.

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Anand, V.D. A new sensitive and specific test for cobalt. Mikrochim Acta 49, 650–653 (1961). https://doi.org/10.1007/BF01217524

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  • DOI: https://doi.org/10.1007/BF01217524

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