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.
|Publication status||Published - 1996|
|Event||5th Nordic Symposium on Humic Substances in Soil and Water - Lund, Sweden|
Duration: 6 Jun 1995 → 8 Jun 1995
Conference number: 5
|Conference||5th Nordic Symposium on Humic Substances in Soil and Water|
|Period||06/06/1995 → 08/06/1995|