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Research Journal of Environmental Toxicology
  Year: 2022 | Volume: 16 | Issue: 1 | Page No.: 1-11
DOI: 10.3923/rjet.2022.1.11
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Polycyclic Aromatic Hydrocarbon Concentrations in Clarias gariepinus from Oluwa River, Ondo State, Nigeria

T.A. Ayandiran , O.O. Fawole and M.A. Ogundiran

Background and Objective: Petroleum hydrocarbons are one of the major organic pollutants that consist of an extremely complex assemblage of chemicals coming from various sources and their fate on the environment is receiving attention in recent times. This research is designed to determine the concentration of polycyclic aromatic hydrocarbons in Clarias gariepinus, water and sediment of the Oluwa River. Materials and Methods: The concentrations of 16 environmentally significant Polycyclic Aromatic Hydrocarbons PAH, were investigated in the sediment and water samples as well as fish (Clarias gariepinus) from the Oluwa River using standard analytical methods. Results: The result revealed that all the 16 PAH investigated were present in all samples investigated at varying concentrations. The total of 16 PAH (Σ16 PAH) in the fish sample (Clarias gariepinus) was 4.90×103 mg kg1 and that of sediment was 4.242×101 mg kg1 while, that of the water sample from the river was 1.038×101 mg L1. The results followed the order C. gariepinus<water<sediment. Conclusion: Conclusively, the value of total PAH obtained from water samples from the Oluwa River when compared with the WHO standard regulatory limit of 0.001 mg L1 strongly implicated the river to be polluted with PAHs. The presence of Polycyclic Hydrocarbons (PAH) in high concentrations, especially those of 2-3 rings and the occurrence of carcinogenic 5-ring PAH, Benzo(a)pyrene in both surface water and sediment of the river above WHO regulatory limit has grossly implicated the river as being polluted. Consumption of fish and water from the river should be discouraged.
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How to cite this article:

T.A. Ayandiran, O.O. Fawole and M.A. Ogundiran, 2022. Polycyclic Aromatic Hydrocarbon Concentrations in Clarias gariepinus from Oluwa River, Ondo State, Nigeria. Research Journal of Environmental Toxicology, 16: 1-11.

DOI: 10.3923/rjet.2022.1.11






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