Titel: Metal interactions with organic solids in estuarine waters : experiments on the combined effects of salinity and organic chelators
Sprache: Englisch
Autor/Autorin: Förstner, Ulrich
Ahlf, Wolfgang
Calmano, Wolfgang
Sellhorn, Claudia
Erscheinungsdatum: 1984
Quellenangabe: Environmental contamination, International Conference, London, July 1984, Edinburgh, UK 1984, pp. 567-72
Zusammenfassung (englisch): In order to estimate the possible influence of nitrilotriacetic acid (NTA) on the sorption of metals in the estuarine environment (Hamburg Hr./Elbe River Estuary as a critical example containing strongly polluted sediments) laboratory experiments were performed using an organic substrate, which was prepared from cell walls of the algae Scenedesmus quadricauda. While the concentration of sodium chloride, calcium chloride and magnesium chloride exhibits relative small effects on the sorption of copper, lead and zinc, a significant influence was measured for the sorption edges of cadmium and silver. For cadmium the combination of salinity and NTA affects lower sorption rates than does either one of both factors. On the other hand, the data for lead and copper indicate that with increasing salinity the mobilizing effect of higher NTA-concentrations is counteracted by the increase of calcium and magnesium. These findings suggest complex competition between various organic and inorganic ligands in the different states of estuarine mixing affecting metal interactions with particulate matter.
URI: http://tubdok.tub.tuhh.de/handle/11420/415
URN: urn:nbn:de:gbv:830-tubdok-4887
DOI: 10.15480/882.413
Institut: Umwelttechnik und Energiewirtschaft V-9
Environmental Technology and Energy Economics V-9
Dokumenttyp: InProceedings (Aufsatz / Paper einer Konferenz etc.)
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