Bioaccumulation and elimination of chromium in an edible fingerlings of Cirrhinus mrigala exposed to sub-lethal concentrations

S. Karthikeyan¹, C. Karthik² and Selvi Sabhanayakam³

¹Department of Physics, St. Joseph’s College of Engineering, Chennai - 600 119 (India) ²Department of Biotechnology, St. Joseph’s College of Engineering, Chennai - 600 119 (India) ³Department of Zoology, Annamalai University, Annamalainagar - 608 002 (India)

ABSTRACT: The bioaccumulation of chromium in different organs of freshwater fingerlings Cirrhinus mrigala exposed to two different sub-lethal concentrations for a period of 28 days has been studied using Inductively Coupled Plasma Atomic Emission Spectrometer (ICP-AES). Further, uptake and elimination process of chromium has also been studied. The degree of accumulation of chromium was found to be different in different organs of the fish. Accumulation pattern was time dependent and elimination process was not in order. The results indicate that they have potential as bioindicators of pollution for chromium. These observations were consistent with earlier findings.

KEYWORDS: Bioaccumulation; elimination; chromium; fish

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