Speciation Study of Heavy Metals in Soil within the Vicinity of a Metal Recycling Factory at Ile-Ife, Southwestern Nigeria

Authors

  • John Adekunle Oyedele Oyekunle Obafemi Awolowo University, Ile-Ife
  • Abolanle Saheed Adekunle Obafemi Awolowo University, Ile-Ife
  • Aderemi Okunola Ogunfowokan Obafemi Awolowo University, Ile-Ife
  • Lateefat Moyosore Durosinmi Obafemi Awolowo University, Ile-Ife
  • Olusola Adelowotan Obafemi Awolowo University, Ile-Ife
  • Olugbenga Timothy Oyeku Obafemi Awolowo University, Ile-Ife

DOI:

https://doi.org/10.24297/jac.v7i1.972

Keywords:

Industrial impacts, Heavy metals, Speciation, Health risk, Environmental pollution

Abstract

A speciation study of Al, Cd, Cu, Mn, Pb and Zn in soil samples from a metal recycling factory in Ile-Ife Osun State, Nigeria, was carried out in order to assess the heavy metal pollution impact of the industrial processes on the immediate environment. Surface soil dust samples collected within the vicinity of the factory were subjected to a five-stage sequential extraction process. Levels of heavy metals in each fraction were determined using Flame Atomic Absorption Spectrophotometer (FAAS). The overall mean values obtained for the metals in the fractions gave the range: Al (0.03 ± 0.01 to 0.20 ± 0.01 µg/g ); Cd (0.03 ± 0.01 to 0.23 ± 0.02 µg/g) ; Cu (2.93 ± 0.02 to 18.30 ± 1.95 µg/g) ; Mn (17.33 ± 0.03 to 91.68 ± 2.90 µg/g); Pb (0.03 ± 0.01 to 0.43 ± 0.02 µg/g)  and Zn (8.20 ± 0.01 to 35.08 ± 0.02 µg/g) . Both the contamination index and enrichment factor results indicated that all the soil samples were contaminated with Cd while a few sites showed Cu contamination. The mobility potential of the metals in the soil sample decreased in the order: Mn > Al > Zn > Cd > Cu > Pb (West) and Cd > Al > Pb > Zn > Mn > Cu (East). The study revealed that the soil around the metal recycling factory is contaminated with heavy metals, and if left unmonitored and controlled could lead to serious environmental risk in the future. 

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Author Biographies

John Adekunle Oyedele Oyekunle, Obafemi Awolowo University, Ile-Ife

Department of Chemistry

Abolanle Saheed Adekunle, Obafemi Awolowo University, Ile-Ife

Department of Chemistry

Aderemi Okunola Ogunfowokan, Obafemi Awolowo University, Ile-Ife

Department of Chemistry

Lateefat Moyosore Durosinmi, Obafemi Awolowo University, Ile-Ife

Department of Chemistry

Olusola Adelowotan, Obafemi Awolowo University, Ile-Ife

Department of Chemistry

Olugbenga Timothy Oyeku, Obafemi Awolowo University, Ile-Ife

Department of Chemistry

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Published

2011-04-19

How to Cite

Oyekunle, J. A. O., Adekunle, A. S., Ogunfowokan, A. O., Durosinmi, L. M., Adelowotan, O., & Oyeku, O. T. (2011). Speciation Study of Heavy Metals in Soil within the Vicinity of a Metal Recycling Factory at Ile-Ife, Southwestern Nigeria. JOURNAL OF ADVANCES IN CHEMISTRY, 7(1), 1141–1159. https://doi.org/10.24297/jac.v7i1.972

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Articles