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Proceedings of the International Academy of Ecology and Environmental Sciences, 2014, 4(4): 176-184
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Article

Assessment of metal bioaccumulation in Clarias batrachus and exposure evaluation in human

Mayank Pandey1, Ashutosh Kumar Pandey1, Ashutosh Mishra1, B. D. Tripathi2
1Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005, India
2Department of Botany, Banaras Hindu University, Varanasi, 221005, India

Received 27 June 2014;Accepted 1 August 2014;Published online 1 December 2014
IAEES

Abstract
The present work was conducted for heavy metal (Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd and Pb) quantification in the river Ganga water and their bioaccumulation in vital organ tissues of Clarias batrachus. Heavy metal characterization in vital organ tissues (gills, liver and muscle) and comparison with FAO permissible guidelines revealed that Cd and Pb were hyper-accumulated which may lead to metal toxicity in fish and its consumers. High metal pollution index (MPI) was recorded for organ tissues of exposed samples (liver 6.05; gills 22.95; muscle 44.48) as compared to unexposed samples (liver 4.5; gills 18.8; muscle 36.76). Effective ingestive dose (EID) was calculated to assess the exposure threat to the human which may occur through dietary inputs. Results revealed that EID for Cr, Co, Cd and Pb was found significantly higher than the dose concentration prescribed by USEPA.

Keywords Clarias batrachus;river Ganga;metal;bioaccumulation;ingestion dose.



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