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1

Toxic substances in the water, bottom sediments and organisms of the Gdansk Basin

100%
Andrulewicz E.
|
|
issue 1-2
77-85
EN
Research on toxic substances in the Gdansk BAsin was done in the form of individual projects.Elevated concentration of cadmium, lead, and zinc were recorded in water at stations located near the cities of Gdansk and Gdynia.THe degree of pollution of bottom sediments by trace metals was estimated by calculation of the enrichment coefficient (EF) of the surface layers.The highest values of the enrichment coefficient for trace metals were recorded in the deepest parts of Puck Bay and in the Gdansk Deep.The trace metal distribution in the Gdansk BAsin is practically identical with that of organic carbon concentrations.The natural variability of metal concentrations in fish was very broad.Neverthlass, investigations done hitherto have shown that metal concentrations in tissues of fish intended for human consumption do not exceed permitted levels.No transgression of permitted levels has been found either for DDT or PCBs.Polycyclic aromatic hydrocarbons are belived also to be metabolised in marine organisms; however, it is belived that they might affect reproduction and physiolgical processes in demersal fish.
2

Heavy metals in marine sediments and biota of Spitsbergen

88%
Sikora A., Zajaczkowski M., Pempkowiak J.
Oceanological Studies
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1996
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vol. 25
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issue 3
97-109
EN
Contents of selected heavy metals (Al, Fe, Co, Ni, Cd, Pb, Zn, Cu, Cr) were meas-ured in sediment samples and biota collected off Spitsbergen. Relatively large contents of met-als in sediments were accompanied by small contents in mussels. This was attributed to the fact that sediments contain a significant amount of minerals rich in heavy metals of low bioavail-ability. Solid speciation revealed that metals incorporated into mineral lattice were by far more abundant than those adsorbed, bound to carbonates and hydroxides, and complexed to organic matter. This also explains scarce bioavailability of metals in the Spitsbergen region.
3

Proposals for the Baltic monitoring programme (HELCOM BMP) for the Polish marine areas of the Baltic Sea

88%
Andrulewicz E.
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|
issue 1-2
159-177
4

Preliminary studies on heavy metal content in biota and sediments from artificial reef area

88%
Protasowicki M.
Oceanological Studies
|
1993
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issue 64/3
77-83
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