Bioaccumulation of heavy metals in organs of fresh water fish Cyprinus carpio (Common carp)

Article

Abstract

The objective of the present study is to determine the bioaccumulation of heavy metals in various organs of the fresh water fish exposed to heavy metal contaminated water system. The experimental fish was exposed to Cr, Ni, Cd and Pb at sublethal concentrations for periods of 32 days. The elements Cd, Pb, Ni and Cr were assayed using Shimadzu AA 6200 atomic absorption spectrophotometery and the results were given as μ/g dry wt. The accumulation of heavy metal gradually increases in liver during the heavy metal exposure period. All the results were statistically significant at p < 0.001. The order of heavy metal accumulation in the gills and liver was Cd > Pb > Ni > Cr and Pb > Cd > Ni > Cr. Similarly, in case of kidney and flesh tissues, the order was Pb > Cd > Cr > Ni and Pb > Cr > Cd > Ni. In all heavy metals, the bioaccumulation of lead and cadmium proportion was significantly increased in the tissues of Cyprinus carpio (Common carp).

Keywords

Toxicity pollutants exposure period gills liver kidney flesh 

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Copyright information

© Islamic Azad University 2008

Authors and Affiliations

  1. 1.Aquatic Biodiversity Research Center, Department of Advanced Zoology and BiotechnologySt.Xavier’s CollegePalayamkottai, TamilnaduIndia

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