Trace element accumulation and elutriate toxicity in surface sediment in northernTunisia (Tunis Gulf, southern Mediterranean)
| Autor: | Amel Dhib, Lotfi Aleya, Walid Oueslati, Noureddine Zaaboub, Monia El Bour, François Galgani, Mohamed Amine Helali, Maria Virgínia Alves Martins, Rym Ennouri, Ayed Added |
|---|---|
| Přispěvatelé: | Faculté des Sciences de Tunis, Institut National des Sciences et Technologies de la Mer [Salammbô], Universidade do Estado do Rio de Janeiro - Faculdade de Geologia, Laboratoire Chrono-environnement ( LCE ), Université Bourgogne Franche-Comté ( UBFC ) -Centre National de la Recherche Scientifique ( CNRS ) -Université de Franche-Comté ( UFC ), Laboratoire Environnement Ressources Provence - Azur - Corse, Institut Français de Recherche pour l'Exploitation de la Mer ( IFREMER ), Faculté des Sciences Mathématiques, Physiques et Naturelles de Tunis (FST), Université de Tunis El Manar (UTM), Institut National des Sciences et Technologies de la Mer [Salammbô] (INSTM), Laboratoire Chrono-environnement - CNRS - UBFC (UMR 6249) (LCE), Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Mediterranean climate
Oyster Geologic Sediments Tunisia 010504 meteorology & atmospheric sciences 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences Bioassays Acid-volatile-sulfide [ SDE ] Environmental Sciences Trace metals Coastal zone biology.animal Metals Heavy 14. Life underwater Marine sediment Effluent 0105 earth and related environmental sciences Hydrology biology Toxicity Trace element Sediment food and beverages Pollution 6. Clean water Grain size Trace Elements Environmental chemistry [SDE]Environmental Sciences Geology Water Pollutants Chemical geographic locations Environmental Monitoring |
| Zdroj: | Marine Pollution Bulletin Marine Pollution Bulletin, Elsevier, 2017, 10 p. 〈10.1016/j.marpolbul.2016.12.076〉 Marine Pollution Bulletin, Elsevier, 2017, 10 p. ⟨10.1016/j.marpolbul.2016.12.076⟩ |
| ISSN: | 0025-326X |
| DOI: | 10.1016/j.marpolbul.2016.12.076〉 |
| Popis: | International audience; Metal concentrations in sediments were investigated in the Gulf of Tunis, Tunisia, in relation to anthropic activities along the Mejerda River and Ghar El Melh Lagoon, with effluents discharged into the gulf. Distribution of grain size showed that the silty fraction is dominant with 53%, while sand and clay averages are 34 and 12% respectively. Zn concentration increased in the vicinity of the Mejerda River while Pb was at its highest levels at the outlet of Ghar El Mehl Lagoon. Sediment elutriate toxicity, as measured by oyster embryo bioassays, ranged from 10 to 45% abnormalities after 24 h, but no relation was found between metal concentration and sediment toxicity. The AVS fraction that represents monosulfide concentrations in the sediment was higher in the central part of the gulf than in the coastal zone. The results reveal the influence of AVS, TOC and grain size on metal speciation andsediment toxicity |
| Databáze: | OpenAIRE |
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