PMID- 29119489 OWN - NLM STAT- MEDLINE DCOM- 20181107 LR - 20181113 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 25 IP - 3 DP - 2018 Jan TI - Sulfide influence on metal behavior in a polluted southern Mediterranean lagoon: implications for management. PG - 2248-2264 LID - 10.1007/s11356-017-0529-6 [doi] AB - The degree of pyritization and degree of trace metal pyritization (DTMP) were investigated in sediments from Ghar El Melh Lagoon (northern Tunisia) in order to study metal deposition. A sediment core and 28 samples were thus taken in summer 2008, and metals and sulfate were analyzed in pore water/pyrite. Acid-volatile sulfide and metals were simultaneously extracted from these two fractions and the role of pyrite in the metal cycling studied. To examine pyrite presence and mineralogical form in sediments, X-ray diffraction of the washed and decarbonated sediment was performed along with scanning electron microscopy. Results showed that pyrite is present in fromboidal and euhedral forms. Thermodynamic calculation highlighted the formation of metallic sulfides and the co-precipitation of metals with iron sulfides. The DTMP increases with depth, indicating that these metals are either sequestered as sulfides or that they co-precipitate with pyrite into the deep sediment. FAU - Oueslati, Walid AU - Oueslati W AD - Laboratoire des Ressources Minerales et Environnement, Departement de Geologie, Faculte des Sciences de Tunis, Universite de Tunis El Manar, 2092, Tunis, Tunisia. FAU - Helali, Mohamed Amine AU - Helali MA AD - Laboratoire des Ressources Minerales et Environnement, Departement de Geologie, Faculte des Sciences de Tunis, Universite de Tunis El Manar, 2092, Tunis, Tunisia. FAU - Zaaboub, Noureddine AU - Zaaboub N AD - Institut des Sciences et Technologies de la Mer, Salammbo, Tunis, Tunisie. FAU - Sebei, Abdelaziz AU - Sebei A AD - Laboratoire des Ressources Minerales et Environnement, Departement de Geologie, Faculte des Sciences de Tunis, Universite de Tunis El Manar, 2092, Tunis, Tunisia. FAU - Added, Ayed AU - Added A AD - Laboratoire des Ressources Minerales et Environnement, Departement de Geologie, Faculte des Sciences de Tunis, Universite de Tunis El Manar, 2092, Tunis, Tunisia. FAU - Aleya, Lotfi AU - Aleya L AD - Laboratoire de Chrono-Environnement, UMR CNRS 6249, Universite de Bourgogne Franche-Comte, La Bouloie, F-25030, Besancon Cedex, France. lotfi.aleya@univ-fcomte.fr. LA - eng GR - CNRS/111/ PT - Journal Article DEP - 20171108 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Metals, Heavy) RN - 0 (Sulfides) RN - 0 (Water Pollutants, Chemical) RN - 132N09W4PR (pyrite) RN - E1UOL152H7 (Iron) SB - IM MH - Environmental Monitoring/*methods MH - Geologic Sediments/*chemistry MH - Iron/*analysis/chemistry MH - Mediterranean Sea MH - Metals, Heavy/*analysis/chemistry MH - Seawater/chemistry MH - Sulfides/*analysis/chemistry MH - Tunisia MH - Water Pollutants, Chemical/*analysis/chemistry OTO - NOTNLM OT - Ghar El Melh Lagoon OT - Management OT - Metals OT - Pyrite OT - Pyritization OT - Sediment EDAT- 2017/11/10 06:00 MHDA- 2018/11/08 06:00 CRDT- 2017/11/10 06:00 PHST- 2017/04/07 00:00 [received] PHST- 2017/10/19 00:00 [accepted] PHST- 2017/11/10 06:00 [pubmed] PHST- 2018/11/08 06:00 [medline] PHST- 2017/11/10 06:00 [entrez] AID - 10.1007/s11356-017-0529-6 [pii] AID - 10.1007/s11356-017-0529-6 [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2018 Jan;25(3):2248-2264. doi: 10.1007/s11356-017-0529-6. Epub 2017 Nov 8.