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- W2056496960 abstract "In this first paper of a series, a new analytical tool is introduced for the analysis of fluorescent molecules—quenchofluorescence analysis. This field of research will have far-reaching ramifications in organic trace analysis. Analytical use is made of the quenching effect in spectrophotofluorometry. Compounds such as anthracene, phenanthrene, pyrene, benz(a)anthracene, benzo(a)pyrene, perylene, etc., have been found to be non-fluorescent in nitromethane solution, but hydrocarbons containing the fluoranthenic ring are fluorescent. Use has been made of this phenomenon in characterising fluoranthene and benzo(Ar) fluoranthene in airborne particulates, following column chromatography. The phenomenon has also been used in thin-layer chromatography, directly on the plate. In dieser Arbeit, die die erste einer Reihe weiterer Arbeiten sein soll, wird eine neue Art der Analyse fluoreszierender Moleküle eingeführt: die Fluoreszenz-Löschungs-Analyse. Diese Methode wird in der organischen Spurenanalyse einen weit verzweigten Anwendungsbereich finden. Es wird dabei analytischer Gebrauch von dem Effekt der Fluoreszenzlöschung gemacht. Verbindungen wie Anthracen, Phenanthren, Pyren, Benz(a)anthracen, Benzo(a)pyren, Perylen usw. fluoreszieren in Nitromethanlösung nicht, während Kohlenwasserstoffe mit Fluoranthenring fluoreszieren. Diese Erscheinung wurde dazu ausgenutzt, Fluoranthen und Benzo(k) fluoranthen in Schwebeteilchen aus der Luft nach vorhergegengener Säulenchromatographie zu identifizieren. Die Erscheinung wurde auch bei der Dünnschichtchromatographie direkt auf der Platte ausgenutzt. Dans ce premier mémoire d'une série, on présente une nouvelle méthode analytique pour l'analyse des molécules fluorescentes : l'analyse par extinction de fluorescence. Ce domaine de recherches aura des ramifications lointaines dans l'analyse organique de traces. On utilise analytiquement l'effet d'extinction en spectrophotofluorimétrie. On a trouvé que des composés tels que l'anthracène, le phénanthrène, le pyrène, le benzo(a)anthracène, le benzo(a)pyrène, le pérylène, etc. ne sont pas fluorescents en solution dans le nitrométhane, cependant que des hydrocarbures contenant le noyau fluoranthénique sont fluorescents. On a utilisé ce phénomène en caractérisant le fluoranthène et le benzo(k)fluoranthène dans les particules en suspension dans l'air, après chromatographie sur' colonne. Le phénomène a été également utilisé en Chromatographie sur couches minces, directement sur la plaque." @default.
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- W2056496960 date "1964-10-01" @default.
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- W2056496960 title "Quenchofluorometric analysis for fluoranthenic hydrocarbons in the presence of other types of aromatic hydrocarbon" @default.
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- W2056496960 doi "https://doi.org/10.1016/0039-9140(64)80208-3" @default.
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