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Schwermetall/Feststoff-Wechselwirkungen in Ästuargewässern : Sorptionsexperimente mit organischen Partikeln
Citation Link: https://doi.org/10.15480/882.402
Other Titles
Heavy metal/solid matter interactions in estuarine waters : sorption experiments on organic particles
Publikationstyp
Journal Article
Date Issued
1984
Sprache
German
Author(s)
TORE-DOI
Interactions between dissolved and solid metal species in estuaries are significantly affected by changes of salinity, pH, turbidity and concentration of organic chelators. Sorption experiments performed on algal cell walls as defined organic substrates indicate (a) stronger associations of cadmium and zinc with cell walls at higher rations of solid matter to dissolved metal concentrations, (b)increasing mobility of cadmium and silver by the formation of chlorocomplexes at elevated salt contents, (c) both increased and reduced sorption of lead and zinc by the effects of alkali and alkaline earth ions and (d) generally stronger binding intensities of copper, lead and zinc in artificial seawater compared to mono-cationic solutions of equal chlorinities. For cadmium the combination of salinity and strongly complexing agent nitrilotriacetic acid (NTA) affects lower sorption rates than does either one of both factors. On the other hand, the data of lead and copper indicate that with increasing salinity the mobilizing effect of higher NTA-concentrations is counteracted by the increase of calcium and magnesium ions.
DDC Class
550: Geowissenschaften
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