Physical Chemistry of Materials Laboratory, Faculty of Sciences and Technology, Chadli Bendjedid University, BP 73, El Tarf 36000, Algeria.
Department of Mathematics, Faculty of exact sciences, Jijel University, BP 98, Ouled Aissa, Jijel 18000, Algeria.
Molecules. 2023 Sep 28;28(19):6841. doi: 10.3390/molecules28196841.
Persistent Organic Pollutants (POPs), particularly the indicator polychlorinated biphenyls (PCBs), were first quantified in water and sediments of two wadis, Boujemaâ and Seybouse, as well as in the effluents from a fertilizer and phytosanitary production industrial plant (Fertial). Since these contaminated discharges end in Annaba Bay (Algeria) in the Mediterranean Sea, with a significant level of contamination, all the potential sources should be identified. In this work, this task is conducted by a multivariate analysis. Liquid-liquid extraction and gas chromatography/mass spectrometry (GC-MS) methods were applied to quantify seven PCB congeners, usually taken as indicators of contamination. The sum of the PCB concentrations in the sediments ranged from 1 to 6.4 μg/kg dw (dry weight) and up to 0.027 μg/L in waters. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were used for the multivariate analysis, indicating that the main sources of PCB emissions in the bay are urban/domestic and agricultural/industrial. The outfalls that mostly contribute to the pollution of the gulf are the Boujemaâ wadi, followed by the Seybouse wadi, and finally by the Fertial cluster and more precisely the annex basin of the plant. Although referring to a specific site of local importance, the work aims to present a procedure and a methodological analysis that can be potentially applicable to further case studies all over the world.
持久性有机污染物（POPs），特别是指示性多氯联苯（PCBs），首先在 Boujemaâ 和 Seybouse 两条溪谷的水和沉积物中以及化肥和植物保护生产工业工厂（Fertial）的废水中进行了定量分析。由于这些受污染的排放物最终进入地中海的安纳巴湾（阿尔及利亚），污染程度很高，因此应确定所有潜在的污染源。在这项工作中，通过多元分析来完成这项任务。采用液 - 液萃取和气相色谱/质谱（GC-MS）方法来定量七种 PCB 同系物，通常用作污染指示物。沉积物中 PCB 浓度总和范围为 1 至 6.4μg/kg dw（干重），水中浓度高达 0.027μg/L。主成分分析（PCA）和层次聚类分析（HCA）用于多元分析，表明该湾 PCB 排放的主要来源是城市/家庭和农业/工业。对海湾污染贡献最大的排水口是 Boujemaâ 溪谷，其次是 Seybouse 溪谷，最后是 Fertial 集群，更确切地说是工厂的附属盆地。尽管这是一个特定的局部重要地点的工作，但旨在提出一种程序和方法分析，该分析可以潜在地适用于世界各地的进一步案例研究。
