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The spectrophotometric determination of thorium with eriochrome black T

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Summary

From 0.5 to 20μg Th/ml may be determined with Eriochrome Black T in acetate buffered solution. Fewer ions interfere if the determination is performed in hydrochloric acid solution, but the lower limit is raised to 1μg Th/ml.

Zusammenfassung

0,5 bis 20μg Th/ml können mit Eriochromschwarz T in acetatgepufferter Lösung bestimmt werden. Photometriert man in salzsaurer Lösung, so stört zwar eine geringere Zahl von Fremdionen, aber die untere Konzentrationsgrenze erhöht sich auf 1μg Th/ml.

Résumé

On peut doser 0,5 à 20μg Th/ml par le Noir Eriochrome T en solution tamponnée à l'acétate. Peu d'ions interfèrent si l'on réalise le dosage en solution acide chlorhydrique mais la limite inférieure se situe alors à 1μg Th/ml.

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Korkisch, J., Janauer, G.E. The spectrophotometric determination of thorium with eriochrome black T. Mikrochim Acta 49, 880–883 (1961). https://doi.org/10.1007/BF01217119

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  • DOI: https://doi.org/10.1007/BF01217119

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