عرض بسيط للتسجيلة

المؤلفHatem, Zaghden
المؤلفBarhoumi, Badreddine
المؤلفJlaiel, Lobna
المؤلفGuigue, Catherine
المؤلفChouba, Lassaad
المؤلفTouil, Soufiane
المؤلفSayadi, Sami
المؤلفTedetti, Marc
تاريخ الإتاحة2022-08-15T07:31:33Z
تاريخ النشر2022-07-31
اسم المنشورMarine Pollution Bulletin
المعرّفhttp://dx.doi.org/10.1016/j.marpolbul.2022.113737
الاقتباسZaghden, H., Barhoumi, B., Jlaiel, L., Guigue, C., Chouba, L., Touil, S., ... & Tedetti, M. (2022). Occurrence, origin and potential ecological risk of dissolved polycyclic aromatic hydrocarbons and organochlorines in surface waters of the Gulf of Gabès (Tunisia, Southern Mediterranean Sea). Marine Pollution Bulletin, 180, 113737.
الرقم المعياري الدولي للكتاب0025326X
معرّف المصادر الموحدhttps://www.sciencedirect.com/science/article/pii/S0025326X22004192
معرّف المصادر الموحدhttp://hdl.handle.net/10576/33051
الملخصWe investigated the occurrence, origin, and potential ecological risk of dissolved polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyl (PCBs) and organochlorine pesticides (OCPs) in 27 surface water samples collected from a highly anthropized and industrialized area in the Gulf of Gabès (Tunisia, Southern Mediterranean Sea) in October–November 2017. The results demonstrated a wide range of concentrations (ng L−1) with the following decreasing order: Ʃ16 PAHs (17.6–71.2) > Ʃ20 PCBs (2.9–33.7) > Ʃ6 DDTs (1.1–12.1) > Ʃ4 HCHs (1.1–14.8). Selected diagnostic ratios indicated a mixture of both pyrolytic and petrogenic sources of PAHs, with a predominance of petrogenic sources. PCB compositions showed distinct contamination signatures for tetra- to hepta-chlorinated PCBs, characteristic of contamination by commercial (Aroclor) PCB mixtures. The dominant OCP congeners were γ-HCH, 2,4′-DDD and 2,4′-DDE, reflecting past use of Lindane and DDTs in the study area. Agricultural, industrial and domestic activities, as well as atmospheric transport are identified as potential sources of PAHs, PCBs and OCPs in surface waters of the Gulf of Gabès. Toxic equivalents (TEQs) suggested a low carcinogenic potential for PAHs in seawater samples (mean of 0.14 ng TEQ L−1). Evaluation of risk coefficients revealed low risk for PAHs and PCBs, and moderate to severe risk for OCPs.
راعي المشروعThis work was financially supported by the CNRS-INSU MISTRALS MERMEX-MERITE project and the IRD French-Tunisian International Joint Laboratory (LMI) “COSYS-Med”.
اللغةen
الناشرElsevier
الموضوعPAHs
PCBs
OCPs
Ecological risk
Gulf of Gabès
Mediterranean Sea
العنوانOccurrence, origin and potential ecological risk of dissolved polycyclic aromatic hydrocarbons and organochlorines in surface waters of the Gulf of Gabès (Tunisia, Southern Mediterranean Sea)
النوعArticle
رقم المجلد180
dc.accessType Open Access


الملفات في هذه التسجيلة

Thumbnail

هذه التسجيلة تظهر في المجموعات التالية

عرض بسيط للتسجيلة