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Tests for metal ions and fluoride with mononitrosochromotropic acid

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Summary

Mononitrosochromotropic acid gives pink to violet colorations with a large number of metal ions; it provides quite sensitive, but not very specific tests for copper, cobalt, nickel, and palladium. The chelates with thorium, yttrium, lanthanum, and cerium permit the indirect detection of 1μg of fluoride ion.

Zusammenfassung

Mononitrosochromotropsäure gibt rosa bis violette Färbungen mit einer großen Zahl von Kationen. Dies läßt sehr empfindliche, aber nicht sehr spezifische Nachweise für Kupfer, Kobalt, Nickel und Palladium zu. Die Komplexe mit Thor, Yttrium, Lanthan und Cer ermöglichen den indirekten Nachweis von 1μg Fluorid.

Résumé

L'acide mononitrosochromotropique donne des colorations roses à violettes avec un grand nombre d'ions métalliques; il donne des tests tout à fait sensibles mais qui ne sont pas très spécifiques avec le cuivre, le cobalt, le nickel et le palladium. Les chélates avec le thorium, l'yttrium, le lanthane et le césium permettent de déceler indirectement 1μg d'ion fluorure.

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Datta, S.K., Saha, S.N. Tests for metal ions and fluoride with mononitrosochromotropic acid. Mikrochim Acta 49, 361–365 (1961). https://doi.org/10.1007/BF01217466

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  • DOI: https://doi.org/10.1007/BF01217466

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