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Assessment Of Temporal Variation Of Heavy Metals In Sediments Of Warri River, Southwestern Nigeria

Author

Listed:
  • Chinemelu, E.S.

    (Department of Earth Sciences, College of Science, Federal University of Petroleum Resources, P.M.B 1221, Effurun, Delta State, Nigeria.)

  • Okumoko, D. P.

    (Department of Earth Sciences, College of Science, Federal University of Petroleum Resources, P.M.B 1221, Effurun, Delta State, Nigeria.)

Abstract

Contaminated sediment poses a serious environmental problem, therefore knowledge of the concentration of heavy metals in stream sediments is very important because of their significance to aquatic life and human health. The concentration of heavy metals (Cd, Pb, Cr, As, Ni, Zn, Fe and Cu), in stream sediments of some parts of Warri River, Southwestern Nigeria were examined during the rainy and dry seasons using Atomic Absorption Spectrophotometer, in order to assess their contamination levels using the environmental contamination indexes; Geoaccumulation Index, Enrichment Factor (EF), and Contamination Factor (CF). For both the rainy and dry seasons, the results revealed average heavy metal concentrations obtained in all samples in the study area in the order As>Cd>Pb>Ni>Cr>Zn>Cu>Fe. The trend in mean Igeo values was as follows: As (-0.66) > Zn (-4.93) > Cu (-5.8) > Fe (-5.31) > Cd (5.76) > Pb (-6.35) > Ni (11.25), showing that River Warri’s sediments were not polluted by heavy metals. Cu= Zn (0.08), Cd (0.34), Pb (0.02), As (0.01), and Ni (0.00) were the mean CF values across all measured locations, indicating a low contamination factor. The average EFs for the sediments were As (1.09) > Cd (1.10) > Cu (1.46) > Zn (1.61) > Pb (1.09) > Ni (1.09) > Fe (0.83), showing low enrichment (

Suggested Citation

  • Chinemelu, E.S. & Okumoko, D. P., 2022. "Assessment Of Temporal Variation Of Heavy Metals In Sediments Of Warri River, Southwestern Nigeria," Geological Behavior (GBR), Zibeline International Publishing, vol. 6(2), pages 68-75, June.
    • Handle: RePEc:zib:zbngbr:v:6:y:2022:i:2:p:68-75
    DOI: 10.26480/gbr.02.2022.68.75
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