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Distribution of Polycyclic Aromatic Hydrocarbons (PAHs) in M’Badon Bay (Ebrie Lagoon, Abidjan-Cote d’Ivoire)

Pollution of the environment by polycyclic aromatic hydrocarbons (PAHs) is of great concern because of their persistence, toxicity, mutagenic and carcinogenic nature. The distribution of 8 PAHs in water and surface sediment from M’Badon Bay (Ebrie Lagoon, Côte d’Ivoire) was investigated using high performance liquid chromatography (HPLC). The results showed that the mean PAH concentrations ranged from 0.08 to 2.70 µg/L in waters and from 0.37 to 25.9 µg/kg in sediments. It was found that pyrene and indeno[1,2,3-cd]pyrene have the highest concentrations in waters (12.35 and 4.69µg/L, respectively) while only pyrene showed the highest concentrations in sediments (154.1 µg/kg). Furthermore, benzo[a]pyrene and indeno[1,2,3-cd]pyrene are frequently detected during the dry, wet, and flood seasons. In addition, highest PAH concentrations was detected during the wet season for both water and sediments. Diagnostic ratio revealed a petrogenic origin of PAHs contamination in M’Badon bay while sediments equivalent toxicity indicated a low toxicity of sediments for living organisms. Also, benzo[k]fluoranthene and benzo[a]pyrene concentrations exceeded in some cases the European Union Maximum Allowable concentrations for surface water (0.1 µg/L). The results of this study suggest that M’Badon Bay water may result in cancer risks to local communities who use it for fishing and domestic purposes.

PAHs, Liquid Chromatography, Estuary, Ebrie Lagoon, Côte d’Ivoire

Urbain Paul Gnonsoro, Naminata Soumahoro Sangaré, N’Guessan Louis Bérenger Kouassi, Koffi Martin N’Goran, Koffi Marcellin Yao, et al. (2023). Distribution of Polycyclic Aromatic Hydrocarbons (PAHs) in M’Badon Bay (Ebrie Lagoon, Abidjan-Cote d’Ivoire). International Journal of Environmental Monitoring and Analysis, 11(4), 89-101.

Copyright © 2023 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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