Seasonal Variation of Heavy Metals concentration (Fe,Co, Pb, Cd, Cu and Ni) for snail Theodoxus jordani , Water and Sediments in Shatt Al Arab river, southern Iraq.

Abstract

A flame atomic absorption spectrophotometer was use to measure the concentration of six heavy metals (Fe, Co, pb, Cd, Cu and Ni) in the snail Theodoxus jordani from four stations within Shatt Al Arab southern Iraq, from winter 2008 to winter 2009.Highest seasonal average concentration for Fe was 3661.003 during spring, Co 120.642 during winter 2008, Pb and Cd 43.535 and 31.195 during autumn, Cu and Ni 26.457 and 115.697 during winter 2008 respectively by µg/g dry wet unit.The same trace elements concentrate in sediment was investigate, the concentration was between 2214.12- 5766.34, 12.67-79.28, 24.55-86.58, 0.0456- 18.18, 20.81- 64.58 and 0.8434 - 114.54 µg/g dry wet respectively while the concentration average in water was 9338.19, 234.155, 352.693, 149.28, 64.647 and 323.401 µg/l respectively.