Sequential Extraction of Lead, Copper, Zinc, Cadmium and Chromium in Soil Samples from Dumpsites in Lafia, Nasarawa State Nigeria

Abstract

Sequential extraction of lead, copper, zinc, cadmium and chromium in soil from Jos road and Emir Palace dumpsites were carried out using Tessier et al (1979) method. The values for these metals varied from 0.02-2.68, 0.01-2.58, 0.03-2.31, 0.18-1.40 and 0.03-0.65mgkg^-1 for exchangeable, Fe-Mn oxide, organic, carbonate and residual fraction respectively for Jos road dumpsite and 0.13-9.25, 0.34-3.20, 0.31-25.40, 0.85-27.80 and 0.20-4.52 mgkg^-1 for exchangeable, Fe-Mn oxide, organic, carbonate and residual fraction respectively for Emir Palace dumpsite. For water analysis the values of conductivity varied from 1215-1320uscm^-1, TDS from 825-902ppm, lead 0.03-0.04ppm aluminium 0.63-0.82ppm and magnesium 3.88-5.47ppm were above Standard organization of Nigeria requirement for drinking water. Hence dumpsites pollute soil and water.

Keywords:Heavy metal, dumpsite, sequential and extraction.