Evaluation of the Pollution Level of Some Heavy Metals in Soil of Bompai Industrial Area, Kano State, Nigeria

Abstract

Soil pollution has become an issue of global concern due to it effect on soil, ecosystem and the entire
environment. This study evaluated the concentration of some heavy metals and pH and determined the level of
their pollution. Two locations (contaminated and control locations) were identified whereby ten soil samples
were collected and then analyzed for Cr, Cd, Fe, Ni, Pb and Cu and pH. The results revealed that the mean value
of heavy metals in contaminated location are Cr (64.81±10.12), Cd (4.37±0.6), Fe (55.54±5.28), Ni
(191.94±22.34), Pb (43.6±3.77), Cu (118.28±15.12), which were found to be higher than that of the control
location Cr (18.72±1.48), Cd (3.59±0.92), Fe (45.49±6.0), Ni (171.53±12.06), Pb (32.04±3.0), Cu (45.39±3.01).
Some heavy metals Cr, Pb, Fe and Cu were found to be below the European Union Regulatory values (EU),
while Cd and Ni were found to be higher than EU values. The single pollution model evaluation revealed that
the soil of the area is potentially and slightly polluted with Cd and Ni respectively. Increase of organic matter
and establishment of private treatment plant for the treatment of waste before discharge were recommended.