Dra Abdelaiz, El Gaidoumi Abdelali, Tanji Karim, Chaouni Benabdallah Aziz, Taleb Abdeslem, Kherbeche Abdelhak
Laboratory of Catalysis, Materials and Environment, Higher School of Technology, Sidi Mohamed Ben Abdellah University of Fez, 30000 Fez, Morocco.
Laboratory, Engineering of Water and Environment, Department of Process Engineering and Environment, Faculty of Sciences and Technology of Mohammedia, Morocco.
ScientificWorldJournal. 2019 Jun 26;2019:7496576. doi: 10.1155/2019/7496576. eCollection 2019.
The discharge of large quantities of industrial and domestic effluents into the estuaries, with or without treatment, has led to an increase in the amount of micropollutants present in the sediments. In this study, we have assessed the quality of sediments of Sebou river studying the physicochemical parameters, percentage of organic matter, mineralogy, and trace levels of metal elements trapped in the sample sediments of Sebou river. The sediments samples were collected from the upstream of Fez river, confluence between the Fez river and the Sebou river, Ain Nokbi river, and edge of Sebou river, where wastewaters from the city of Fez are discharged. The sediments samples were characterized by scanning electron microscopy, X-ray diffraction, and Fourier Transform Infrared Spectroscopy, while trace levels of metallic elements, Calcium, Zinc, Copper, Cadmium, Iron, and Nickel, were determined by the ICP-AES analysis. The obtained results show that there is a significant change in the values of the studied metals which is probably due to industrial effluents. Indeed, the metal content in the sediments reaches particularly high values exceeding the limit recommended by WHO. These results suggested that the pollution by metallic industrial effluents discharged without treatments poses potential threat to the receiving rivers and may represent a danger for humans which are exposed to pollutants due to the numerous uses of such river waters.
大量工业和生活污水未经处理或经过处理后排放到河口，导致沉积物中微污染物的数量增加。在本研究中，我们通过研究塞布河沉积物的物理化学参数、有机质百分比、矿物学以及样品沉积物中捕获的金属元素痕量水平，评估了塞布河沉积物的质量。沉积物样本采集自菲斯河上游、菲斯河与塞布河交汇处、艾因诺科比河以及塞布河边缘，菲斯市的废水在此处排放。通过扫描电子显微镜、X射线衍射和傅里叶变换红外光谱对沉积物样本进行表征，同时通过电感耦合等离子体发射光谱分析法测定金属元素钙、锌、铜、镉、铁和镍的痕量水平。所得结果表明，所研究金属的值存在显著变化，这可能是由于工业废水所致。事实上，沉积物中的金属含量尤其达到了很高的值，超过了世界卫生组织建议的限值。这些结果表明，未经处理排放的金属工业废水造成的污染对接纳河流构成潜在威胁，并且可能对因大量使用此类河水而接触污染物的人类构成危险。
