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The distribution of 8 polycyclic aromatic hydrocarbons (PAHs) in the surface sediments of the Grand-Lahou lagoon (Cote d’Ivoire) was investigated using a high performance liquid chromatography (HPLC). The total concentrations of PAHs were between 1.55 and 437.52 μg/g in the dry season. Pyrene, benzo (b) fluoranthene and fluoranthene have the highest concentrations. In the rainy season, the total PAHs concentrations varied between 46.35 and 1222.73 μg/g. Pyrene, benzo (a) pyrene and benzo (a) anthracene were the most present in the sediments of the lagoon of Grand-Lahou during the wet season. Possible sources of PAHs in the  lagoon of Grand-Lahou are oil and fuel spills from ships and fishing boats, combustion of waste, domestic waste disposal and especially the production of charcoal on the Grand-Lahou lagoon shores. A clear dominance of high molecular weight (HMW) PAHs (pyrene, Benzo (k) fluoranthene, Benzo (a) pyrene, indeno (1,2,3-cd) pyrilene, Benzo (g, h, i) pyrilene, Benzo (a) anthracene , Benzo (b) fluoranthene) was observed compared to low molecular weight (LMW) PAHs (fluoranthene). Keywords : Polycyclic Aromatic Hydrocarbon (PAH), coastal lagoon, pollution, West Africa.

Distribution of Polycyclic Aromatic Hydrocarbons (PAHs) in a tropical coastal lagoon (Grand-Lahou lagoon, Côte d’Ivoire)