Spatial distribution and contamination assessment of heavy metals in marine sediments of the southern coast of Sfax, Gabes Gulf, Tunisia

MARINE POLLUTION BULLETIN

卷:131

Article

Naifar, Ikram¹  Pereira, Fernando^2,3  Zmemla, Raja¹  Bouaziz, Moncef¹  Elleuch, Boubaker¹  Garcia, Daniel^2,3 

[1] Natl Sch Engineers Sfax, Lab Environm Engn & Ecotechnol, Sfax 11733038, Tunisia

[2] Ecole Natl Super Mines, Ctr SPIN, 158 Cours Fauriel, F-42023 St Etienne, France

[3] Ecole Natl Super Mines, UMR 5600, 158 Cours Fauriel, F-42023 St Etienne, France

关键词: Heavy metals;    Marine sediments;    Spatial distribution;    Pollution assessment;    Gabes Gulf;   

DOI  :  10.1016/j.marpolbul.2018.03.048

来源: Elsevier

【 摘 要 】

In order to investigate the current distribution of metal concentrations in surface marine sediments of the southern coast of Sfax (Tunisia), thirty-nine samples were collected in the vicinity of a mixed industrial and domestic wastewater effluent discharge. In comparison with the threshold effect level and probable effect level, the majority of metals had high ecological and biological risks. Enrichment factor and geoaccumulation Index showed that the majority of sediments are unpolluted by As, Ni and Pb, moderately polluted by Cr and Cu and moderately to strongly polluted by P, Y, Zn. Besides, all sites are extremely polluted by Cd. Principal component analysis indicates that As, Cu and Ni were mainly from lithogenic sources, whereas Cd, Cr, F, P, Pb, Y and Zn were mainly derived from anthropogenic source. Findings of this research can be used as suitable reference for future studies and environmental management plans in the region.

【 授权许可】

Free