Abstract
The eutrophication status of rivers is changed to a large degree by discharge of waste waters containing high amounts of phosphates from use of detergents. Sediments from the river Elbe in the port of Hamburg, and upstream from this town, and from some parts of the rivers Trave, Eider, and Schwentine are highly enriched with phosphorus. The phosphorus contents of up to 8300 ppm are about five to tenfold higher than the phosphorus contents of intensively fertilized soils. Phosphates accumulated in sediments are mainly bound as iron phosphates of different composition in a relatively labile binding form from which considerable amounts may be released to the water by various mobilization processes.
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Wir danken Frau S. Kneesch für die Durchführung der Analysen und Anfertigung der graphischen Darstellungen.
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Brümmer, G., Lichtfuß, R. Phosphorgehalte und -bindimgsformen in den Sedimenten von Elbe, Traye, Eider und Schwentine. Naturwissenschaften 65, 527–531 (1978). https://doi.org/10.1007/BF00439793
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DOI: https://doi.org/10.1007/BF00439793