Institute of Estuarine and Coastal Research, School of Marine Engineering and Technology, Sun Yat-sen University, Guangzhou, China.
Guangdong Provincial Engineering Research Center of Coasts, Islands and Reefs, Guangzhou, China.
Water Environ Res. 2020 Aug;92(8):1214-1229. doi: 10.1002/wer.1317. Epub 2020 Mar 17.
Based on field efforts in Lake IJssel (the Netherlands) from 2000 to 2010, dynamics of 15 priority PAHs in suspended particulate matter (SPM) and in seawater were determined. This study examined time-varying changes in PAH concentration and composition, apportioned potential anthropogenic sources, and quantified their linkages to hydrological factors. The sum of individual PAHs (defined as ∑ PAHs) varied widely throughout the study period in Lake IJssel, ranging from 0.76 to 9.66 mg/kg in SPM and from 0.014 to 0.136 μg/L in seawater. High molecular weight PAHs were the most abundant PAH compounds, responsible for 73%-97%. Seasonal variation in ∑ PAHs level was distinguished, peaked in late winter and early spring, and reached a minimum in summer. Over site, the heavy contamination was found at the river mouth (e.g., Genemuiden). The driving factors of SPM and water temperature controlled the fate of PAHs. Principal component analysis and diagnostic ratios suggested that PAHs may have been derived from different input sources through various transport pathways, for example, coal combustion source and petroleum source. The findings are useful for filling the knowledge gap of PAH dynamics in Lake IJssel and Wadden Sea, which exerts significant influences on lake's environment. PRACTITIONER POINTS: HMW PAHs (4-6 rings) were the most abundant PAH compounds. Heavy contamination was found in the mouth of IJssel River. Time-varying change in PAHs level was significantly correlated with riverine input. PAHs sources were apportioned via principal component analysis and diagnostic ratios.
基于 2000 年至 2010 年在艾瑟尔湖（荷兰）的实地调查，确定了悬浮颗粒物（SPM）和海水中 15 种优先多环芳烃（PAHs）的动态变化。本研究考察了 PAH 浓度和组成的时变变化，分配了潜在的人为来源，并量化了它们与水文学因素的联系。整个研究期间，艾瑟尔湖的个体 PAHs 总和（定义为∑PAHs）变化很大，SPM 中的范围为 0.76 至 9.66mg/kg，海水中的范围为 0.014 至 0.136μg/L。高分子量 PAHs 是最丰富的 PAH 化合物，占 73%-97%。∑PAHs 水平的季节性变化明显，在冬末和早春达到峰值，夏季达到最低。在整个地点，河口（例如根特米登）发现了严重的污染。SPM 和水温的驱动因素控制着 PAHs 的命运。主成分分析和诊断比表明，PAHs 可能来自不同的输入源，通过各种传输途径，例如煤炭燃烧源和石油源。这些发现有助于填补艾瑟尔湖和瓦登海 PAH 动态的知识空白，这对湖泊环境有重要影响。
