Quality Status of Surface Sediments of Lake Ichkeul (NE Tunisia): an Environmental Protected Area and World Heritage Site

Brik, Bochra; Shaiek, Moez; Trabelsi, Lamia; Regaya, Kamel; M’Barek, Nabiha Ben; Béjaoui, Béchir; Martins, Maria Virgínia Alves; Zaaboub, Noureddine

doi:10.1007/s11270-022-05648-z

Cited by 4 publications

(2 citation statements)

References 58 publications

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“…The rst group (G1) consists of core sediment samples OM1, OM2, OM3, OM4, OM7, and OM9-1, which exhibit the highest values of EC, Salinity, Cu, Zn, Pb, Fe, Mn, and TOC%. This group shows a positive correlation with clay minerals and the ne fraction of sediments (Brik et al, 2022). On the other hand, the second group (G2) comprises weakly mineralized sediments with an alkaline character (pH > 8), D50, and the coarse fraction (> 63 m), except for FM5.…”

Section: Statistical Analysis and Source Identi Cationmentioning

confidence: 93%

The long-term evolution model of metallic contamination of Monastir-Sayada Coast as deduced from the geochemical and statistical analysis

Khiari,

Charef,

Khadhar

et al. 2023

Preprint

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Coastal regions are especially susceptible to both natural and human-induced pressures, and it is crucial to evaluate these pressures. This research aims to investigate the monitoring of human activities through river discharges in order to identify potential ecological risks and examine the long-term changes in metallic contamination in Monastir-Sayada. To accomplish this, four sediment samples were collected from various locations along the Monastir coast, specifically near the source of pollution, to analyse the concentrations of heavy metals like Zinc (Zn), Cadmium (Cd), Copper (Cu), Lead (Pb), Manganese (Mn), Nickel (Ni), and Iron (Fe). The findings indicate that the average concentrations of these metals in the sediment cores followed a descending order of Fe > Zn > Mn > Cu > Cd in front of the Monastir effluent, Fe > Mn > Zn > Pb > Cd > Cu > Ni in the effluent at Frina region, Fe > Mn > Zn > Cd > Ni > Pb > Cu in the Melah stream, and Fe > Mn > Cd > Zn > Cu in front of the Essouk stream at Lamta. Based on the enrichment factor (EF) and contamination factor (CF), the long-term evolution of the Monastir-Sayada coast is considered highly polluted for Pb and Cd, posing a relatively high potential ecological risk. The heavy metals are believed to originate from similar human activities, as indicated by the principal component analysis (PCA) and cluster analysis (CA). Pollution from heavy metals can have long-lasting effects on coastal sediments, emphasizing the importance of preventing such pollution in the first place.

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Section: Statistical Analysis and Source Identi Cationmentioning

confidence: 93%

The long-term evolution model of metallic contamination of Monastir-Sayada Coast as deduced from the geochemical and statistical analysis

Khiari,

Charef,

Khadhar

et al. 2023

Preprint

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show abstract

“…Sample C1.1 is represented by Na + −Cl − rich thermal water from the coastal region of Lake Ichkeul (Figure 1). The hydrodynamics of the lake are influenced by input/output contributions from both freshwater streams and saltwater from Bizerte lagoon [84]. Despite this, previous investigations of the isotope's composition revealed that C1.1 had a meteoric signature [1].…”

Section: Cluster Nmentioning

confidence: 99%

Major- and Trace-Element Geochemistry of Geothermal Water from the Nappe Zone, Northern Tunisia: Implications for Mineral Prospecting and Health Risk Assessment

Ayari,

Barbieri,

Boschetti

et al. 2023

Environments

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A comprehensive hydrogeochemical survey of the geothermal waters from the Nappe Zone (Maghrebides fold-and-thrust belt) was undertaken to determine the origins of geothermal waters and to assess the health risks associated with their potentially toxic elements. A total of 11 geothermal water and 3 stream water samples were collected and analysed for major and trace elements (As, B, Ba, Fe, Mn, Pb, Sr, Zn). Two main geothermal water groups were highlighted by hydrogeochemical diagrams and multivariate analyses (PCA, HCA): the first group is the Na−Cl type, TDS > 10 g/L, controlled by deep circulation, while the second group is the Na-Cl−HCO3 type, TDS < 2 g/L, and controlled by shallow circulation. A curved hydrogeochemical evolution path, observed from mixed bicarbonate shallow groundwater to chloride geothermal water, indicates that the interaction with evaporites drives the chemistry of the geothermal samples. On these, the As enrichments come from sulphide oxidation polymetallic mineralisation during the upwelling to the surface from E–W major lineaments. Therefore, E–W lineaments are potential areas for mineral prospecting. The health risk assessment reveals that the concentration of potentially toxic elements in geothermal waters are lower than the guideline values for the protection of freshwater aquatic life and dermal exposure (bathing or balneology).

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Geochemical composition of suspended sediments generated after erosive rainfall events in nested agroforestry catchments with Mediterranean climate

Ramos,

Gaspar,

Lizaga

et al. 2025

Journal of Hydrology

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Quality Status of Surface Sediments of Lake Ichkeul (NE Tunisia): an Environmental Protected Area and World Heritage Site

Cited by 4 publications

References 58 publications

The long-term evolution model of metallic contamination of Monastir-Sayada Coast as deduced from the geochemical and statistical analysis

The long-term evolution model of metallic contamination of Monastir-Sayada Coast as deduced from the geochemical and statistical analysis

Major- and Trace-Element Geochemistry of Geothermal Water from the Nappe Zone, Northern Tunisia: Implications for Mineral Prospecting and Health Risk Assessment

Geochemical composition of suspended sediments generated after erosive rainfall events in nested agroforestry catchments with Mediterranean climate

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