Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 14, Issue 3, 2012; Page No.(381-384 )

STUDIES ON ACCUMULATION OF FIVE HEAVY METALS IN FISH TISSUES COLLECTED FROM FISH PONDS OF HARINGHATA AREA (NADIA) AND THEIR SEASONAL VARIATION

SATABDI DAS, BIKASH KANTI BIS WAS AND APARAJITA BIS WAS

Abstract

Concentrations of heavy metals (Zn, Pb, Cr, Cu, Cd) were determined by Atomic Absorption Spectrophotometer in different tissues (liver, kidney, gill, muscle) of the freshwater fish Labeo rohita. Fish specimens were collected from ponds of three different areas of Nadia district in West Bengal during winter (December-January) 2010-11 and summer (May-June) of 2011. The results indicated that the fish accumulated only Zn and Pb in trace quantity while all other metals were present below the detectable range. Zn concentration increased during summer while Pb concentration increased during winter. It was concluded that the fish from these ponds were safe for consumption at its present level of heavy metal but appropriate measure should be taken to check source of Zn and Pb contamination and prevent it.

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