The distribution of heavy metals (Cu, Zn, Cd, Pb) in the fine fraction of surface sediments of the North Sea
Everaarts, J.M.; Fischer, C.V. (1992). The distribution of heavy metals (Cu, Zn, Cd, Pb) in the fine fraction of surface sediments of the North Sea. Neth. J. Sea Res. 29(4): 323-331
In: Netherlands Journal of Sea Research. Netherlands Institute for Sea Research (NIOZ): Groningen; Den Burg. ISSN 0077-7579; e-ISSN 1873-1406, meer
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| Auteurs | | Top |
- Everaarts, J.M.
- Fischer, C.V.
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| Abstract |
Heavy-metal concentrations were established in the fine fraction (grain size < 63 µm) of surface sediments from the southern part of the North Sea. High concentrations of copper (25 to 240 µg·g-1 D.W.), zinc (400 to 4000 µg·g -1 D.W.), cadmium (3 to 30 µg·g-1 D.W.) and lead (75 to 630 µg·g-1 D.W.) were measured in the Southern Bight. In the fine fraction of surface-sediment samples from the area north of the Dogger Bank and in the western part of the Dogger Bank proper, enhanced concentrations of heavy metals were found. The concentrations of heavy metals in the fine fraction of the surface sediment from a sedimentation basin, the Oyster Grounds, were relatively low. Metal concentrations in the fraction < 63 µm were highly correlated with the grain-size distribution: a high concentration, in particular of zinc and cadmium, was related to a low percentage of the fine sediment fraction. |
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