Concentration of polycyclic aromatic hydrocarbons and quality of sediments in Biétry bay (Ebrié lagoon, Côte d’Ivoire)
1 Laboratory of Geology, Mineral and Energy Resources, UFR STRM, Felix Houphouët-Boigny University, 22 B.P. 582 Abidjan 22, Côte d’Ivoire.
2 Department of Earth and Planetary Sciences, Environment, Paul Sabatier University, Toulouse III, 118 route Narbone, 31400 Toulouse, France.
3 Department of Geosciences, Peloforo Gon Coulibaly University of Korhogo, Côte d’Ivoire.
Research Article
GSC Advanced Research and Reviews, 2024, 20(03), 226–234.
Article DOI: 10.30574/gscarr.2024.20.3.0322
Publication history:
Received on 16 August 2024; revised on 21 September 2024; accepted on 23 September 2024
Abstract:
The work carried out in Biétry bay did not allow us to determine the levels of polycyclic aromatic hydrocarbons (PAHs) present in the sediments. The aim of this study is to determine the concentration of PAHs and the quality of the sediments in this bay. To achieve this, ten (10) sediment samples were taken during the low-water period. The PAH levels were obtained after the extraction of PAHs using Soxhlet and the analysis of the solutions obtained using gas chromatography coupled with a mass spectrometer (GC-MS). The PAH concentrations are distributed heterogeneously. The average values are generally between 0.003 µg/kg (acenaphthene) and 0.103 µg/kg (pyrene). Heavy PAHs are the most abundant in the sediments. Polycyclic aromatic hydrocarbons mainly come from a pyrolytic source. The sediments of stations b1, b2 and b3 are the most toxic. Correlations have highlighted common developments between certain PAHs. Stations b1, b2 and b3 are the most toxic because their TEQ value is higher than the threshold. Fluorene and fluoranthene are respectively the indicators of the level of deterioration of sediments by light PAHs and heavy PAHs.
Keywords:
PAHs; Biétry bay; Sediments; GC-MS; Soxhlet; TEQ
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Copyright © 2024 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0
