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Articles

Vol. 1 (2023): KolaDaisi University Journal of Applied Sciences

Assessment of Soil Heavy Metal Concentration in Ori-Ile Village Battery Waste Dumpsite and its Environs, Ibadan, Southwest, Nigeria

DOI:
https://doi.org/10.5281/zenodo.17373220
Submitted
October 23, 2025
Published
August 24, 2023

Abstract

Heavy metal polluted environments are threats to human health due to their bioaccumulation. Consequently, there is a need to constantly monitor and evaluate their concentrations in residential area soils. Ori-Ile village in Egbeda Local Government Area of Ibadan, which was formally a battery waste dumpsite, is currently a residential area. Soil samples from the battery waste dumpsite and its environs were analyzed for Lead, Cadmium, Manganese, Zinc and Copper concentrations using Atomic Absorption Spectrophotometer (AAS). Results showed that the mean metal concentration values were Pb (15,701.05 mgkg-1  ), Cd (7.63 mgkg-1  ), Mn (405.68 mgkg-1  ), Zn (85.45 mgkg-1 ) and Cu  (88.80 mgkg-1  ). Using Enrichment Factor, the soils were classified as deficient (1.0) to extremely highly enriched with Pb (3320.5), Cu (65.1) and Zn (37.7) while they were deficient to minimally enriched with Cd (1.9) and Mn (1.1). Calculated Geo-accumulation index (Igeo) showed the soil to be unpolluted (Igeo < 0) to moderately polluted (1 ≤ Igeo < 2) for the metals analyzed. The Contamination/Pollution Index (C/PI) placed the soil as slightly contaminated (0.1-0.3) to excessively polluted with Pb (733.6) and Cd (25.6); moderately contaminated to severely contaminated with Cu; and slightly contaminated to slightly polluted with Mn and Zn. To a large extent, the mean concentration value of Pb in Ori-Ile village was above the international guideline value for environmental quality criteria and hence, the soil should not be used for agricultural and residential purposes.