✍ Scribed by Langhals, H. ;Abbt-Braun, G. ;Frimmel, F. H.
No coin nor oath required. For personal study only.
The precision UV/Vis-absorption spectra of a naturally occurring aquatic humic substance were measured in the range of concentration 0.003 to 1.4 g/L DOC (dissolved organic carbon). Lambert-Beer law is well obeyed at low concentrations whereas deviations have been observed for DOC concentrations above 0.1 g/L: they are interpreted in terms of self-solvation and formation of micelles.
Schlagwörter: UV/Vis-Spektroskopie, Huminstoffe, refraktäre organische Säuren, Mizelle Zusammenfassung: Präzise UV/Vis-Absorptionsspektren eines natürlichen aquatischen Huminstoffs wurden in einem Konzentrationsbereich von 0.003 bis 1.4 g/L DOC (gelöster organisch gebundener Kohlenstoff) gemessen. Diese erfüllen das Lambert-Beersche Gesetz sehr gut bei kleinen Konzentrationen an DOC, während für Konzentrationen oberhalb von 0.1 g/L Abweichungen gefunden werden, die als Folge von Selbstsolvatation und Mizellbildung erklärt werden.
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