Levels and Risk Assessment of Heavy Metals in Soil and Vegetables from Oil Spillage Areas in Gemade Estate, Lagos State, Nigeria.

Oyebamiji Oyedele Oketayo and

Abstract

The levels of nineteen heavy metals have been determined in twelve soil and six vegetable samples [each for Telfairia ocidentalis (TC) and Vernonia amygdalina (VA)] at Gemade Estate using Energy Dispersive X-Ray Spectrometry (EDXRF). Three identical samples in a different area were also collected and analyzed using the same procedure as control. The levels (mg/kg) were in the order Fe > Ti > Ca > Mn > K> V> Cr > Co> Ni > Zn > Sc > Y > Se > Ga > Sr > Rb > B r> As in soil samples. The concentration of the heavy metals in the vegetables, TC and VA ranged from 1.111 to 14.010 and 0.475 to 29520 mg/kg respectively