Research Article

Soil Potentially Toxic Elements Contamination in different Rural - Urban Fringe Land Uses in Edo State, Nigeria

Volume: 17 Number: 50 March 24, 2025
Paul Orobosa Orobator *, Abiemwense Daniel
EN

Soil Potentially Toxic Elements Contamination in different Rural - Urban Fringe Land Uses in Edo State, Nigeria

Abstract

The study investigated soil potentially toxic elements contamination in different rural - urban fringe land uses in Edo State, Nigeria. The objectives were to determine the level of PTEs in the soils, their contamination status and implications. Nine soil samples were collected from mechanic workshop, secondary forest, block molding site, oil palm production site, fire wood processing site, cassava farm, back yard farm, cooking gas plant site and oil palm plantation respectively at 0-15cm soil depth. Each soil sample was analyzed for lead, chromium, cobalt, arsenic, cadmium, vanadium and nickel using USEPA method 3050B. Data obtained was analyzed using index of geoaccumulation, contamination factor and single element pollution indices. The results revealed that the status of Lead (Pb), Chromium (Cr), Cobalt (Co), Arsenic (As), Cadmium (Cd), Vanadium (V) and Nickel (Ni) in the soils were low. Backyard farm had higher Co, As, V and Ni levels compared to the other examined land uses. Contamination factor showed very slight contamination (< 0.1) while Single Element Pollution Indices indicated low contamination (> 1). Index of Geoaccumulation demonstrated that the soils’ were unpolluted (0 < Igeo ≤ 1). The findings also indicated that backyard farm had higher levels of PTEs (Co, As, V and Ni), followed by oil palm plantation (Cr and Cd), firewood processing site (Pb) and secondary forest (V) respectively. The study concluded that the PTEs status of the soils was not toxic and that the soils in the investigated land uses were not severely contaminated. It recommended intervallic monitoring in the existing land uses while further researches should focus on the evolving ones.

Keywords

Pollution indices, Outskirts, Soil quality and sustainability, Soil management, Toxicity

References

  1. Abraham GMS and Parker RJ (2008). Assessment of heavy metal enrichment factors and the degree of contamination in marine sediments from Tamaki Estuary, Auckland, New Zealand. Journal of Environmental Monitoring Assessment, 136,227-238.
  2. Adedeji OH, Olayinka OO and Tope-Ajayi OO (2019). Spatial distribution and health risk assessment of soil pollution by heavy metals in Ijebu-Ode, Nigeria. Journal of Health and Pollution 9(22):190601
  3. Agyeman PC, John K, Kebonye NM, Borůvka L and Vašát R (2022). Combination of enrichment factor and positive matrix factorization in the estimation of potentially toxic element source distribution in agricultural soil. Environ Geochem Health https://doi.org/10.1007/s10653-022-01348-z 1-28
  4. Aigbogun J (2018). Spatial distribution of some potentially toxic metals (PTMs) in dust from selected major roads/streets in Benin-City Metropolis, Edo State, Nigeria. Unpublished M.Sc. thesis submitted to the Department of Chemistry, University of Lagos in partial fulfillment of the requirements for the award of degree of Master of Science in Environmental Management (MEM).
  5. Akhter P, Khan ZI, Hussain MI, Ahmad K, Awan MUF, Ashfaq A, Chaudhry UK, Ullah MF, Abideen Z, Almaary KS, Alwahibi MS and Elshikh MS (2022). Assessment of Heavy Metal Accumulation in Soil and Garlic Influenced by Waste-Derived Organic Amendments, Biology, 11(850):1- 13. https://doi.org/10.3390/biology1106085.
  6. Akintola OO and Bodede IA (2019). Distribution and Accumulation of Heavy Metals in Red Cedar (Cedrela odorata) Wood Seedling Grown in Dumpsite Soil. J. Appl. Sci. Environ. Manage. 23 (4):811-817.
  7. Akintola OO (2014). Geotechnical and Hydrogeological assessment of Lapite waste dumpsite in Ibadan, Southwestern Nigeria. Unpublished PhD Thesis, University of Ibadan, pp 307.
  8. Albanese S, and Guarino A (2022). Assessing contamination sources and environmental hazards for potentially toxic elements and organic compounds in the soils of a heavily anthropized area: the case study of the Acerra plain (Southern Italy) AIMS Geosciences, 8(4),552–578. DOI: 10.3934/geosci. 030.
  9. Alloway B, Centeno AJ, Finkelman RB, Fuge R, Lindh U, Smedley P (2013). Essentials of Medical Geology, 1st ed.; Selinus, O., Ed.; Springer: Dordrecht, The Netherlands.
  10. Bamgbose O, Odukoya O and Arowolo TOA (2000). Earthworm as bioindicator of heavy metal pollution in dumpsite of Abeokuta city, Nigeria. Revista de BiologiaTropical, 48(1), 229-234.
APA
Orobator, P. O., & Daniel, A. (2025). Soil Potentially Toxic Elements Contamination in different Rural - Urban Fringe Land Uses in Edo State, Nigeria. Journal of Biological and Environmental Sciences, 17(50), 13-25. https://izlik.org/JA52HU37BU
AMA
1.Orobator PO, Daniel A. Soil Potentially Toxic Elements Contamination in different Rural - Urban Fringe Land Uses in Edo State, Nigeria. JBES. 2025;17(50):13-25. https://izlik.org/JA52HU37BU
Chicago
Orobator, Paul Orobosa, and Abiemwense Daniel. 2025. “Soil Potentially Toxic Elements Contamination in Different Rural - Urban Fringe Land Uses in Edo State, Nigeria”. Journal of Biological and Environmental Sciences 17 (50): 13-25. https://izlik.org/JA52HU37BU.
EndNote
Orobator PO, Daniel A (March 1, 2025) Soil Potentially Toxic Elements Contamination in different Rural - Urban Fringe Land Uses in Edo State, Nigeria. Journal of Biological and Environmental Sciences 17 50 13–25.
IEEE
[1]P. O. Orobator and A. Daniel, “Soil Potentially Toxic Elements Contamination in different Rural - Urban Fringe Land Uses in Edo State, Nigeria”, JBES, vol. 17, no. 50, pp. 13–25, Mar. 2025, [Online]. Available: https://izlik.org/JA52HU37BU
ISNAD
Orobator, Paul Orobosa - Daniel, Abiemwense. “Soil Potentially Toxic Elements Contamination in Different Rural - Urban Fringe Land Uses in Edo State, Nigeria”. Journal of Biological and Environmental Sciences 17/50 (March 1, 2025): 13-25. https://izlik.org/JA52HU37BU.
JAMA
1.Orobator PO, Daniel A. Soil Potentially Toxic Elements Contamination in different Rural - Urban Fringe Land Uses in Edo State, Nigeria. JBES. 2025;17:13–25.
MLA
Orobator, Paul Orobosa, and Abiemwense Daniel. “Soil Potentially Toxic Elements Contamination in Different Rural - Urban Fringe Land Uses in Edo State, Nigeria”. Journal of Biological and Environmental Sciences, vol. 17, no. 50, Mar. 2025, pp. 13-25, https://izlik.org/JA52HU37BU.
Vancouver
1.Paul Orobosa Orobator, Abiemwense Daniel. Soil Potentially Toxic Elements Contamination in different Rural - Urban Fringe Land Uses in Edo State, Nigeria. JBES [Internet]. 2025 Mar. 1;17(50):13-25. Available from: https://izlik.org/JA52HU37BU