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IJSTR >> Volume 3- Issue 12, December 2014 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Bioaccumulation Of Trace Metals In Water, Sediment And Crab (Callinectes) From Sombreiro River, Niger Delta, Nigeria.

[Full Text]



O.A.F. Wokoma



Key words: Bioaccumulation Factor, Callinectes, Niger Delta, Sediment, Sombreiro River, Tracemetal, Crab



Abstract: Thetrace metal burden in surface water, sub-tidal sediment and edible crab – Callinectes in the lower (brackish/ sea water) reaches of the Sombreiro River was studied over a three month period. Sediments had a higher concentration of metals than water, with the concentration ranging from 0.022±0.006 – 340.66±106.21mg/kg and 0.002±0.001 – 0.99±0.104 mg/l respectively. It was revealed that Callinectes from the study area bioaccumulates all the heavy metals investigated from water and Cr, Cu, Ni and Zn from sediment. The concentration of all the heavy metals under investigation- Cr, Cu, Ni, Cd, Pb and Zn were below their stated limits in water and sediment, however, the metal body load of Cu, Cr, Ni, Pb and Zn in the tissue of Callinectes were above their stated limits, as such its consumption poses a health risk to consumers.



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