Copper, Zinc and Lead Enrichments in Sediments from Guacanayabo Gulf, Cuba, and Its Bioaccumulation in Oysters, Crassostrea rhizophorae
| Autor: | A. Gelen Rudnikas, D. de la Rosa Medero, O. Díaz Arado, G. Arencibia Carballo, J. Viguri Fuente, S. Olivares Reumont, N. López Pino, K. D’Alessandro Rodríguez, O. Díaz Rizo |
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| Rok vydání: | 2009 |
| Předmět: |
Geologic Sediments
Oyster biology Health Toxicology and Mutagenesis Cuba chemistry.chemical_element Sediment Aquatic animal General Medicine Zinc Toxicology Pollution Copper Lead chemistry Bioaccumulation Environmental chemistry biology.animal Animals Ecotoxicology Crassostrea Water Pollutants Chemical Shellfish |
| Zdroj: | Bulletin of Environmental Contamination and Toxicology. 84:136-140 |
| ISSN: | 1432-0800 0007-4861 |
| Popis: | Levels of iron, copper, zinc and lead were determined in sediments and soft tissue of the oyster Crassostrea rhizophorae collected from Guacanayabo Gulf, Cuba. Metal-to-Iron ratio in sediments shows an average enrichment for Cu (5,1), Pb (11,7) and Zn (1,3) in the last 20 years. Metal concentrations found in soft tissue of C. rhizophorae are site dependent. The average biota-sediment accumulation factors (BSAFs) obtained for Fe, Cu and Pb are less than unity in all cases, indicating that only a little fraction of Cu and Pb in the sediments is bioavailable, independently of their enrichments. Zinc has an average BSAF value of 2.4 and may represent a serious impact in the area. The concentrations of zinc and copper in some of the oysters are above typical public health recommended limits. |
| Databáze: | OpenAIRE |
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