This study investigates the distribution and origin of polycyclic aromatic hydrocarbons (PAHs) in sediments from the Koumassi Estuarine bay (Ébrié lagoon, Côte d’Ivoire). Ten sediment samples were analyzed to determine the concentrations of 16 priority PAHs. The results show that PAH levels are generally low and remain well below Canadian sediment quality thresholds. Fluoranthene is the dominant compound (22.6%), indicating contamination primarily of pyrolytic origin, linked to the combustion of biomass (charcoal, coconut charcoal) and fossil fuels. Some molar ratios (BaA/Chry, LMW/HMW) also suggest a minor contribution from petroleum sources, likely transported by road runoff. This study provides a useful first approach for the environmental management of dredged sediments in this sensitive urban area.
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