Abstract: Contaminated soil with heavy metals may be an environmental hazard and sources of exposure. In order to estimate the effects and potential risks associated with elevated heavy metal concentrations in the study area, the fraction of total metals that is bioavailable was identified using the modified Tessier sequential extraction procedure and the atomic absorption spectrometer (AAS). The extent of pollution of soil environment was evaluated using, contamination factor (CF), geochemical accumulation index (Igeo), pollution load index (PLI), degree of contamination (CD) and the total enrichement factor (R). Obtained results show that the mean concentration values of heavy metals were 30.404, 4.073, 339.00, 60.00, 209.00, 49.66, 27.60, 486.00, 48.10, and 0.0072 mg/kg for Fe, As, Mn, Cu, Zn, Cr, Pb, Hg, Ni and Cd respectively. The trend of metals mean concentration in the study area is Fe>As>Hg>Mn>Zn>Cu>Cr>Ni>Pb>Cd; in the control area the trend is As>Fe>Mn>Zn>Hg>Cu>Ni>Cr>Pb>Cd. The concentrations of Hg, Zn, Cu, Ni, As, and Mn in the study area exceeded the world thresholds limits of 0.05, 50, 36, 35, 0.39 and 12 mg/kg respectively according to WHO and FAO standard which poses a great risk to humans and the environment.
Keywords: Heavy metals, Pollutant, Carcinogenicity, Hazard, Toxicity, Environment, Genotoxicity.
Title: Fractionation of Heavy Metals in soil from the Vicinity of a Plastic Manufacturing Company in Enugu Metropolis
Author: Nnaji, Gabriel O.
ISSN 2350-1030
International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)
Paper Publications