Bioaccumulation of heavy metals in flora and fauna of Hooghly estuary,east coast of India |
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Authors: | B Bhattacharya SK Sarkar PK Maji |
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Institution: | 1. Department of Metallurgical Engineering , Jadavpur University , Jadavpur, Calcutta, 700 032;2. Department of Marine Science , Calcutta University , Calcutta, 700 019, India |
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Abstract: | Spectroscopic determinations of Fe, Zn, Mn, Cu, Co and Ni were carried out in 23 organisms including seaweeds, zooplankters, molluscs and fishes from Hooghly estuary at the confluence of Bay of Bengal. Seaweeds and gastropods were more efficient in accumulating levels while zooplankters bivalves and fishes showed intermediate levels. Analyses were performed on the sediment, water and on the individual dissected organs of a mussel, oyster and teleost fish. Bioaccumulation of Fe, Zn, Mn and Cu in the soft body parts (gills, mantle, liver etc.) of the three species showed a high degree of organ specificity in some cases. Major sources of the micropollutants include natural weathering, catchment runoff, urban and industrial discharges that may pose an ecological risk to the local estuarine ecosystem. |
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Keywords: | Bioaccumulation heavy metals aquatic pollution |
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