Natural and anthropogenic particulate-bound aliphatic and polycyclic aromatic hydrocarbons in surface waters of the Gulf of Gabes (Tunisia, southern Mediterranean Sea) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Environmental Science and Pollution Research Année : 2018

Natural and anthropogenic particulate-bound aliphatic and polycyclic aromatic hydrocarbons in surface waters of the Gulf of Gabes (Tunisia, southern Mediterranean Sea)

Résumé

Particulate-bound aliphatic and polycyclic aromatic hydrocarbons (AHs and PAHs) were investigated in the surface waters of the Gulf of Gabès (Tunisia, southern Mediterranean Sea). Samples were collected off the Sfax and Gabès-Ghannouch coasts. Concentrations in total resolved n-alkanes ranged from 0.03 to 3.2 μg L−1, and concentrations in total parents + alkylated PAHs ranged from bdl to 108.6 ng L−1. The highest concentrations were recorded in the southern Sfax. AHs were mainly of biogenic origin with odd n-alkane predominance, although an anthropogenic contribution was also detected. The PAH molecular patterns revealed a mixed origin with the presence of low molecular weight and alkylated compounds, characteristic of uncombusted oil-derived products, and the presence of high molecular weight compounds, typical of combustion residues. Rainfall events induced an increase in PAH concentrations by a factor 1.5–23.5. The particle-water partition coefficients (Koc) suggest that the partitioning of PAHs between the particulate and dissolved phases is driven by hydrophobicity and organic matter composition.
Fichier principal
Vignette du fichier
Fourati et al_2018_HAL_2.pdf (5.98 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01799490 , version 1 (27-02-2019)

Identifiants

Citer

Rania Fourati, Marc Tedetti, C. Guigue, M. Goutx, Hatem Zaghden, et al.. Natural and anthropogenic particulate-bound aliphatic and polycyclic aromatic hydrocarbons in surface waters of the Gulf of Gabes (Tunisia, southern Mediterranean Sea). Environmental Science and Pollution Research, 2018, 25 (3), pp.2476-2494. ⟨10.1007/s11356-017-0641-7⟩. ⟨hal-01799490⟩
263 Consultations
119 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More