Contamination of harbor sediments in the eastern Gulf of Finland (Neva Bay), Baltic Sea |
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Authors: | S. M. Ussenkov |
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Affiliation: | (1) Department of Lithology and Marine Geology, Faculty of Geology, St. Petersburg State University, Universitetskaya nab 7/9, 194 354 Saint Petersburg, Russia, RU |
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Abstract: | The areal distribution of oil products and various trace metals have been studied in bottom surface deposits from the harbors of Neva Bay. The data of contents were normalized to natural background concentrations. Also the size and biomass of benthos groups were analyzed. The results show clearly that industrial discharges have elevated levels of contamination in the sediments. Few efficient measures against environmental contamination have been taken. The sediments contain very high concentrations of oil products and such heavy metals as Hg, Pb, Cu, and Zn. The benthic organisms most sensitive to heavy metal contamination are Chironomidae. The dredging and dumping of the contaminated deposits can lead to secondary contamination of the Gulf of Finland and the Baltic proper. Received: 18 November 1996 · Accepted: 17 March 1997 |
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Keywords: | Harbor sediments Heavy metals contamination Baltic Sea Benthic organisms Gulf of Finland Neva Bay |
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