El Zrelli Radhouan, Courjault-Radé Pierre, Rabaoui Lotfi, Castet Sylvie, Michel Sylvain, Bejaoui Nejla
Géosciences Environnement Toulouse (GET), Université de Toulouse, UMR 5563 CNRS/UPS/IRD/CNES, 14 avenue Edouard Belin, 31400 Toulouse, France.; Institut National Agronomique de Tunis (INAT), Université de Carthage, 43 Avenue Charles Nicolle, 1082 Tunis Maharajène, Tunisia..
Géosciences Environnement Toulouse (GET), Université de Toulouse, UMR 5563 CNRS/UPS/IRD/CNES, 14 avenue Edouard Belin, 31400 Toulouse, France.
Mar Pollut Bull. 2015 Dec 30;101(2):922-9. doi: 10.1016/j.marpolbul.2015.10.047. Epub 2015 Oct 30.
In the present study, the concentrations of 6 trace metals (Hg, Cd, Cu, Pb, Cr and Zn) were assessed in the surface sediments of the central coastal area of Gabes Gulf to determine their contamination status, source, spatial distribution and ecological risks. The ranking of metal contents was found to be Zn>Cd>Cr>Pb>Cu>Hg. Correlation analysis indicated that Cd and Zn derived mainly from the Tunisian Chemical Group phosphogypsum. The other pollutants may originate from other industrial wastes. Metallic contamination was detected in the south of chemical complex, especially in the inter-harbor zone, where the ecological risk of surface sediments is the highest, implying potential negative impacts of industrial pollutants. The spatial distribution of pollutants seems to be due to the effect of harbor installations and coastal currents. The metallic pollution status of surface sediments of Gabes Gulf is obvious, very worrying and requires rapid intervention.
在本研究中，对加贝斯湾中部沿海地区表层沉积物中的6种痕量金属（汞、镉、铜、铅、铬和锌）浓度进行了评估，以确定它们的污染状况、来源、空间分布和生态风险。发现金属含量的排序为锌>镉>铬>铅>铜>汞。相关性分析表明，镉和锌主要来源于突尼斯化学集团的磷石膏。其他污染物可能源自其他工业废物。在化工园区南部检测到金属污染，尤其是在港区之间的区域，那里表层沉积物的生态风险最高，这意味着工业污染物可能产生负面影响。污染物的空间分布似乎是由于港口设施和沿岸海流的影响。加贝斯湾表层沉积物的金属污染状况明显，令人十分担忧，需要迅速采取干预措施。
