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Micro-scale separation of mixtures of acids using ion-exchange resins

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Summary

Mixtures of carboxylic acids, containing about 200μg of each, may be fractionated by gradient elution from micro-columns of ion-exchange resins. The fractions are collected successively on filter paper and further separated by paper chromatography. Using this method the components of a mixture of twelve acids were readily identified.

Zusammenfassung

Gemische von je etwa 200μg Carbonsäuren lassen sich durch stufenweise Elution aus Mikrosäulen von Ionenaustauscherharzen fraktionieren. Die Eluatfraktionen werden nacheinander auf Filterpapier gesammelt und dann papierchromatographisch weiter getrennt. Mit Hilfe dieses Verfahrens gelang es gut, die Komponenten eines aus 12 Säuren bestehenden Gemisches zu identifizieren.

Résumé

On peut fractionner des mélanges d'acides carboxyliques, contenant environ 200μg de chaque acide, par élution graduelle sur des microcolonnes de résines échangeuses d'ions. Les fractions sont successivement recueillies sur papier filtre et séparées ensuite par chromatographie sur papier. Par cette méthode, on a identifié rapidement les constituants d'un mélange de douze acides.

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Lawson, G.J., Purdie, J.W. Micro-scale separation of mixtures of acids using ion-exchange resins. Mikrochim Acta 49, 415–419 (1961). https://doi.org/10.1007/BF01217472

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  • DOI: https://doi.org/10.1007/BF01217472

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