Concentration of Some Heavy Elements in Water, Sediment, Food content and Muscles of Cyprinus carpio collected from Main Outfall Drain Near the Center of Al-Nassiriya city

摘要

The present study was conducted during the period from January 2016 to December 2016 in south sector of Main out full drain , Nassiriya. Three stations were fixed to achieve the study. The concentration of eight heavy elements (cadmium, cobalt, copper, iron, manganese, nickel, lead and zinc) were measured in dissolved and particulate phases of water, exchangeable and residual phases of the sediment and tissues (muscle and gut) of important commercial species of fish Cyprinus carpio L. The mean concentrations of cadmium, cobalt, copper, iron, manganese, nickel, lead and zinc in dissolved phase of water were 0.04, 0.53, 0.03, 116.63, 2.42, 2.52, 0.35 and 12.12 μg/l respectively, whereas their concentrations in particulate phase were 19.38, 12.23, 35.11, 2078.69, 193.98, 75.37, 27.10 and 77.90 μg/g dry weight respectively. For sediment, the mean concentrations of these elements in the exchangeable and residual phases were as follows: Cd (4.02, 0.05), Co (12.13, 15.48), Cu (6.39, 13.20), Fe (558.16, 1563.11), Mn (102.26, 155.20), Ni (1.44, 72.90), Pb (28.07, 0.92) and Zn (2.15, 18.65) μg/g dry weight respectively.