Origin and structures of groundwater humic substances from three Danish aquifers

C. Grøn, L. Wassenaar, M. Krog

    Research output: Contribution to journalConference articleResearch

    Abstract

    Structural, chemical, and isotopic parameters were used to identify the origins of groundwater humic substances from three Danish aquifers. A variety of analytical techniques (visible light absorption, molecular weight distribution, C-13-NMR spectroscopy, elemental composition with major elements and halogens, hydrolyzable amino acids and carbohydrates, carbon isotopes) applied to aquatic humic and fulvic acids led to consistent structural interpretations for each of the three aquifers studied. For humic substances in two-aquifers, the analyses suggested source rocks in agreement with geological and hydrogeochemical information. In a third aquifer, source rock identification was inconclusive, and multiple fossil and recent organic carbon sources are suggested.
    Original languageEnglish
    JournalEnvironment International
    Volume22
    Issue number5
    Pages (from-to)519-534
    ISSN0160-4120
    DOIs
    Publication statusPublished - 1996
    Event5th Nordic Symposium on Humic Substances in Soil and Water - Lund, Sweden
    Duration: 6 Jun 19958 Jun 1995
    Conference number: 5

    Conference

    Conference5th Nordic Symposium on Humic Substances in Soil and Water
    Number5
    CountrySweden
    CityLund
    Period06/06/199508/06/1995

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