HEAVY METALS IN WATER, SEDIMENT AND SOME FISHES OF KARNOFULY RIVER, BANGLADESHF. ISLAM , M. RAHMAN , S.S.A. KHAN 3, B. AHMED , A.BAKAR AND M. HALDER
The studies were carried out to estimate the Chemical and biological quality of water, sediment and fishes in various station of Karnofuly river, Bangladesh. In water, the heavy metal value of Lead, Cadmium, Chromium, Copper, Zinc, Iron, Manganese, Silver, BOD 5 , COD, Nitrate, Nitrite, Phosphate were found at 0.107- 0.177 mg/L, 0038-.008 mg/L, 0.09-0.325 mg/L, 0.026-0.09 mg/L, 0.075-0.449 mg/L, 0.714-4.031 mg/L, 0.09-4.30 mg/L, 0.003-0.186 mg/L, 630 mg/L, 862 mg/L and 45 mg/L respectively. The highest value of BOD 5 , COD and Phosphates were found in Fisheryghat station. All the sampling station of sediments showed moderate various. High concentration of Pb was found in Chapila Fish. The results also provided data to understand and quantify the threat of the impact of climate change on environment of this region. This study will convey a strong message for the government body, policy maker to establish rules and regulation in order to save our environment and will be helpful for public awareness. An immediate attention from the concerned authorities is required in order to protect the river from further pollution.
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