Risk assessment of sediment of Aforemu River, Oye Ekiti, Nigeria

Abstract

The pollution properties of Pb, Cr, Cu, Zn, Cd, and Ni in river sediments were studied. The results indicate varying degree of contamination with respect to their location in this order of 5>4>1>2>3 . The concentrations of Pb, Cr, Cu, Zn, and Ni in the soil were low, so their potential ecological risks were far lower than other heavy metals and exerted no potential harm to environment except Cd which is of great concern.

Keywords: Heavy metals, geoaccumulation index, potential, ecological, indexs