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Quantitative analysis of 3-indoleacetic acid and serotonin by in situ fluorescence on thin-layer chromatograms

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Summary

The characterization and quantitation of indoles by thin-layer chromatography followed by fluorometric scanning of the chromatographed species on the thin-layer provides a rapid and sensitive method of analysis at theμg level and lower. Considerable increases in fluorescence intensity may be achieved if the plate is sprayed with a polar compound such as dimethylsulfoxide prior to measurement. The method may be used to quantitatively determine directly 50 ng samples of serotonin and indoleacetic acid and should be equally sensitive for other indolic compounds. The analysis of biological extracts for low levels of indoles should be a particular application for the method.

Zusammenfassung

Die Charakterisierung und Bestimmung von Indolen durch Dünnschicht-chromatographie und nachfolgende Fluoreszenzmessung der chromatographierten Substanzen auf der Dünnschichte erfordert eine rasche und empfindliche Analysenmethode für die Größenordnung von Mikrogramm und darunter. Eine erhebliche Verstärkung der Fluoreszenz läßt sich durch Sprühen mit einer polaren Verbindung wie z. B. Dimethylsulfoxid erreichen. Diese Bestimmungsmethode eignet sich für die direkte Bestimmung von 50 ng Serotonin und Indolessigsäure und dürfte auch für andere Indolderivate gleich empfindlich sein. Insbesondere Extrakte biologischen Materials dürften sich zur Analyse anbieten.

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Häusler, M., MacNeil, J.D., Frei, R.W. et al. Quantitative analysis of 3-indoleacetic acid and serotonin by in situ fluorescence on thin-layer chromatograms. Mikrochim Acta 61, 43–53 (1973). https://doi.org/10.1007/BF01220132

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  • DOI: https://doi.org/10.1007/BF01220132

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