使用多变量分析识别PCB污染源:安纳巴湾 (阿尔及利亚) 盆地的案例研究
Soumeya Khaled-Khodja1, Hassen Cheraitia2, Karima Rouibah3
1Physical Chemistry of Materials Laboratory, Faculty of Sciences and Technology, Chadli Bendjedid University, BP 73, El Tarf 36000, Algeria.
Molecules (Basel, Switzerland)
|October 14, 2023
概括
在阿尔及利亚的水域和沉积物中量化了持久性有机污染物 (POP),特别是多二 (PCB). 多变量分析确定了城市,家庭,农业和工业来源导致安纳巴湾的PCB污染.
科学领域:
- 环境化学环境化学
- 海洋污染研究 海洋污染研究
- 分析化学 分析化学
背景情况:
- 持久性有机污染物 (POPs),包括指标多双 (PCBs),对环境构成重大风险.
- 地中海的安纳巴湾接收来自工业活动和自然水流的污染排放.
- 识别污染源对于有效的环境管理和整治至关重要.
研究的目的:
- 在Boujemaâ和Seybouse的水和沉积物中量化持久性有机污染物 (POP),特别是七种指标PCB同源物.
- 通过多变量统计分析,确定安纳巴湾PCB污染的主要来源.
- 建立适用于其他全球案例研究的来源识别方法框架.
主要方法:
- 从两个瓦迪 (Boujemaâ,Seybouse) 和工业废水 (Fertial) 收集样本.
- 使用液液提取和气体染色学/质谱学 (GC-MS) 来定量七种PCB同源.
- 多变量分析,包括主要组件分析 (PCA) 和分层集群分析 (HCA),用于来源分配.
主要成果:
- 沉积物中的PCB度在1至6.4μg/kg干重之间,在水中高达0.027μg/L.
- 多变量分析表明,城市/家庭和农业/工业活动是PCB排放的主要来源.
- 布杰马瓦迪被确定为 PCB 污染的主要贡献者,其次是塞布斯瓦迪和肥沃工业厂.
结论:
- 该研究成功地确定和分配了安纳巴湾的PCB污染源.
- 提出的方法提供了一个可靠的方法,用于评估和管理类似沿海环境中的POP污染.
- 调查结果强调需要有针对性的干预措施,以减轻来自确定的污染源的污染,并保护海洋生态系统.
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