Instituto Hidrográfico, Rua das Trinas, 49, 1249-093 Lisboa, Portugal.
Instituto Hidrográfico, Rua das Trinas, 49, 1249-093 Lisboa, Portugal.
Sci Total Environ. 2019 Feb 20;652:1077-1089. doi: 10.1016/j.scitotenv.2018.10.014. Epub 2018 Oct 12.
Polycyclic aromatic hydrocarbons (PAHs) are organic compounds that tend to rapidly associate to particulate organic matter in sediments due to their hydrophobic characteristics, inducing toxic, carcinogens and mutagens effects to many living organisms. The monitoring and identification of the sources of PAHs in sediments is relevant especially because they are the main reservoir and secondary source of contamination of aquatic systems. To identify the sources there are different methods for data treatment that complement each other: evaluation of profiles distribution, source-specific diagnostic ratios of PAHs and principal component analysis (PCA). To demonstrate the applicability of these different methods, concentrations of PAHs from sediments of four Portuguese estuarine systems were used: Ria de Aveiro, Tagus River, Sado River and Ria Formosa, in order to identify the sources.
多环芳烃（PAHs）是有机化合物，由于其疏水性特征，往往会迅速与沉积物中的有机颗粒物质结合，对许多生物产生有毒、致癌和致突变作用。监测和识别沉积物中 PAHs 的来源尤为重要，因为它们是水生系统中污染的主要储存库和二次源。为了识别来源，有不同的方法来处理数据，这些方法相互补充：评估分布曲线、PAHs 的特定来源诊断比和主成分分析（PCA）。为了证明这些不同方法的适用性，使用了来自葡萄牙四个河口系统的沉积物中的 PAHs 浓度：阿威罗河口、塔古斯河、萨多河和福尔摩沙河口，以识别来源。
