Interaction between Monovalent and Multivalent Metals and Fulvic Acids A Streaming Current Detection Study

Weis, M.; Frimmel, Fritz H.

doi:10.1515/znb-1990-0621

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…A reference for the small differences in the chemical structure of humic substances can be deduced from the similar IR spectra for the different HIC fractions [18]. The characteristic differences between the individual HIC fractions can be related to properties like polarity, solvatisation in water, development of secondary and tertiary structures of the macromolecule, its surface active character and the occurrence of micelles, the number of carboxyl or phenyl groups [19] and the complexation with metals [20].…”

Section: Resultsmentioning

confidence: 99%

Application of Hydrophobic Interaction Chromatography (HIC) in Water Analysis Anwendung der Hydrophobizitätschromatographie (HIC) in der Wasseranalytik

Fuchs

Heidt

1994

Acta hydrochim. hydrobiol.

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Summary: Dissolved high molecular weight organic substances, like humic substances, can be characterized with regard to their molecular weight distribution using gel filtration chromatography (GFC). In addition, the adsorption properties, for example on activated carbon, can be described, if the substances are separated by hydrophobic interaction chromatography (HIC) in different fractions using a chromatographic column with a hydrophobic matrix. The retention time (Rt) of single chemical substances in this column can be used to characterize the hydrophobicity or hydrophility of each compound as well as of the high molecular weight organic matter. The hydrophobic interaction between the matrix of the column and the dissolved chemical compounds also depends on the hydrophobicity of the gel and the composition of the eluent. Relations between retention times, log P-coefficients (octanoVwater partition) and K-values of isotherms on activated carbon (Freundlich equation) were found.Schlagworter: Hydrophobizitatschromatographie, HIC, Gelfiltrations-Chromatographie, GFC, Huminstoffe, Adsorptionsanalyse, Octanol/Wasser-Verteilungskoeffizient Zusammenfassung: Hohermolekulare organische Wasserinhaltsstoffe wie Huminstoffe konnen hinsichtlich ihrer Molekulargewichtsverteilung mit Hilfe der Gelfiltrations-Chromatographie (GFC) beschrieben werden. Um aul3erdem auch die Adsorptionseigenschaften, z. B. an Aktivkohle, zu erfassen und zu untersuchen, kann man die Substanzen in einer Chromatographie-Trennsaule mit hydrophober Matrix in verschieden stark hydrophobe HIC-Fraktionen trennen. Die Retentionszeit (Rt) von chemischen Einzelsubstanzen in einer solchen Saule ist sowohl ein Ma13 fur die Hydrophobizitat bzw. Hydrophilie der einzelnen Stoffe als auch der untersuchten hochmolekularen Substanzen. Sie ist ferner abhangig von der Hydrophobizitat des Gels und der Zusammensetzung des Elutionsmittels. Es wurden Beziehungen zwischen den Retentionszeiten, den log-P-Werten (OctanoWasser-Verteilungskoeffizienten) und den K-Werten der Freundlich-Gleichung von Aktivkohle-Isothermen gefunden.

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Section: Resultsmentioning

confidence: 99%

Application of Hydrophobic Interaction Chromatography (HIC) in Water Analysis Anwendung der Hydrophobizitätschromatographie (HIC) in der Wasseranalytik

Fuchs

Heidt

1994

Acta hydrochim. hydrobiol.

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Aquatic Humic Substances

Frimmel

2001

Biopolymers Online

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Introduction and Historical Outline Occurrence Hydrophobic and Hydrophilic Fractions Chemical Structure Elemental Composition Molecular Size Distribution and Charge Spectral Absorbance and Fluorescence Infrared Spectra Mass Spectrometry NMR Spectroscopy Soft Hydrolysis Interaction of Humic Matter with Other Water Constituents Fate of Humics in Technical Application of Water Viewing the Function in Aquatic Ecosystems

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Interaction between Monovalent and Multivalent Metals and Fulvic Acids A Streaming Current Detection Study

Cited by 2 publications

References 17 publications

Application of Hydrophobic Interaction Chromatography (HIC) in Water Analysis Anwendung der Hydrophobizitätschromatographie (HIC) in der Wasseranalytik

Application of Hydrophobic Interaction Chromatography (HIC) in Water Analysis Anwendung der Hydrophobizitätschromatographie (HIC) in der Wasseranalytik

Aquatic Humic Substances

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