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Suspended particulate matter fluxes along with their associated metals, organic matter and carbonates in a coastal Mediterranean area affected by mining activities  |
HELLALI Mohamed Amine, ZAABOUB Noureddine , OUESLATI Walid, ADDED Ayed, 2016 |
Marine Pollution Bulletin, 104, ., 171-181, Février 2016 |
Résumé
A study of suspended particulate matter (SPM) fluxes along with their associated metals, organic matter and
carbonates, was conducted off the Mejerda River outlet in May 2011 and in March and July 2012 at depths of
10, 20 and 40 m using sediment traps. SPM fluxes are more significant near the Mejerda outlet, especially in
winter, but dissipate further offshore. Normalization reveals that the Mejerda is a major source of Pb, Zn, Cd,
Cu, Ni, and Co, all of which are the result of human activities. In contrast, Fe, Mn and N are of authigenic origin.
The enrichment factor shows that Pb, Zn and especially Cd are the most highly polluting metals off the Mejerda
outlet. This confirms the trend observed on the shores of the Mejerda prodelta and is consistent with the type of
mining activities conducted in the Mejerda catchment.
A study of suspended particulate matter (SPM) fluxes along with their associated metals, organic matter andcarbonates, was conducted off the Mejerda River outlet in May 2011 and in March and July 2012 at depths of10, 20 and 40 m using sediment traps. SPM fluxes are more significant near the Mejerda outlet, especially inwinter, but dissipate further offshore. Normalization reveals that the Mejerda is a major source of Pb, Zn, Cd,Cu, Ni, and Co, all of which are the result of human activities. In contrast, Fe, Mn and N are of authigenic origin.The enrichment factor shows that Pb, Zn and especially Cd are the most highly polluting metals off the Mejerdaoutlet. This confirms the trend observed on the shores of the Mejerda prodelta and is consistent with the type ofmining activities conducted in the Mejerda catchment.
