Assignment of Concentration of Heavy Metals (Cr, Zn, Cd, Pb) In Sediments of Gorgan Bay and South East the Caspian Sea (Golestan Province-Iran)2010-2011

Abstract

Heavy metals have been studied after their entry into water and absorption and accumulation in sediments in the Gorgan Bay and South East the Caspian Sea four season during 1 year from 2010-2011. The aim of this study is the comparison and analysis of heavy metals in sediment in eastern coast of the Caspian Sea and Gorgan Bay. For achievement to this goal had been measured concentrations of some heavy metals Lead (Pb), Cadmium (Cd), Zinc (Zn) and Chrome (Cr) from sea bed layers were measured. Atomic absorption apparatus was used and then analyzed all of data with analysis of variance (ANOVA) Technique in software. The results show that the highest level of metals Maximum concentrations of these elements in sediments were observed in station 1(Zn)(1213±13) , in station 4(Pb)(1021±11), in station 4(Cd)(302±8), in station 4(Cr)(315±8) µg/kg in that order.