BIOACCUMULATION OF CHROMIUM IN CIRRHINUS MRIGALA (original) (raw)

Chromium in the effluent is a major concern for the tanning industry and it is directed in to fresh water bodies which in turn taken part in biological magnification through food chain. The present study is undertaken to gauge the accumulation of chromium in the tissues of Cirrhinus mrigala, when the live fish is subjected to sub lethal dose of chromium for a period of 10, 20 and 30 days in controlled environment. The tissues from gill, liver and kidney where subjected to Atomic Absorption Spectroscopy for assessing the amount of chromium accumulated in various tissues at the end of 10, 20 and 30 days. Maximum accumulation of chromium was found in the liver and kidney while minimum accumulation was seen in gill. Cirrhinus mrigala, is used as bioindicators because it tends to accumulate heavy metals and so their effects. As the fish is extensively used for human consumption, this finding urges greater regulation for industrial effluent discharge.