Origin and structures of groundwater humic substances from three Danish aquifers

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, 13C-NMR spectroscopy, elemental composition with major elements and...

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Published in:Environment international 1996, Vol.22 (5), p.519-534
Main Authors: Grøn, C., Wassenaar, L., Krog, M.
Format: Article
Language:English
Subjects:
Absorption spectroscopy
Amino acids
Applied sciences
Aquifers
Biological and physicochemical phenomena
Carbohydrates
Exact sciences and technology
Freshwater
Isotopes
Natural water pollution
Pollution
Q1
Water treatment and pollution
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description 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, 13C-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.
doi_str_mv 10.1016/0160-4120(96)00056-6
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source Elsevier
subjects Absorption spectroscopy
Amino acids
Applied sciences
Aquifers
Biological and physicochemical phenomena
Carbohydrates
Exact sciences and technology
Freshwater
Isotopes
Natural water pollution
Pollution
Q1
Water treatment and pollution
title Origin and structures of groundwater humic substances from three Danish aquifers
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