| Popis: |
Fractionation of Cu, Ca, Mn, Pb, Ni, Fe, Co, Zn, Cr, and Cd was carried out on 30cm depth soil samples collected along the major roads of Owerri Industrial layout, Nigeria, with a sequential extraction procedure in the rainy (April to July) season, using atomic absorption spectroscopy. The pH of the soil had a range of 6.2 to 6.8 while moisture content had a range of 10.023to 13.782. Fe was discovered to occur at elevated concentrations in all the soil samples with the highest concentration (1462.480mg/kg). The metal with least concentration (0.067mg/kg) was Cd. Ca (52.070) was mostly abundant in the Exchangeable fraction while Cu (1.984mg/kg), Mn (12.169mg/kg), Pb (3.013mg/kg), Ni (3.845mg/kg), Fe (1360.790mg/kg), Co (3.871mg/kg), Zn (46.259mg/kg), Cr (3.817mg/kg) and Cd (0.257mg/kg) were mostly abundant in Residual fraction. From the fractionation results, most of the metals had high abundance in Residual fraction indicating lithogenic origin and low bioavailability of the metals considered. The average potential mobility was calculated for the metals in the soil 30cm depth and it was in the order: Ca>Cd>Cu>Pb>Mn>Co>Fe>Ni>Cr>Zn |
