College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China.
Centre for Research On the Ecological Security of Ports and Shipping, Shanghai Ocean University, Shanghai, 201306, China.
Environ Sci Pollut Res Int. 2023 Jan;30(3):7973-7986. doi: 10.1007/s11356-022-22706-5. Epub 2022 Sep 1.
The spatial distribution, sources, and potential risk of polycyclic aromatic hydrocarbons (PAHs) were systematically investigated in Shanghai port, one of the most important hubs in international trade. The 16 priority PAHs in surface water and sediment were determined. Total concentrations of 16 PAHs (ΣPAHs) ranged from 140.6 to 647.4 ng/L in surface water and from 12.7 to 573.2 ng/g (dry weight, dw) in sediment, respectively. The 2-ring and 3-ring PAHs with low molecular weight were main components in water, while the 3-ring and 4-ring PAHs were abundant in sediment. Flu was the main component of the ΣPAHs in water and sediment. According to the source apportionment, the PAHs in water mostly originated from combustion of fossil fuels and petroleum and petroleum combustion were the main contributors to the PAHs in sediment. The results obtained from potential risk assessment indicate that the PAHs in surface water present a moderate ecological risk, whereas the PAHs in sediment show low ecological risk indicating a less possibility of toxic pollution.
对上海港（国际贸易最重要的枢纽之一）的多环芳烃（PAHs）的空间分布、来源和潜在风险进行了系统研究。测定了地表水中的 16 种优先 PAHs 和沉积物中的 16 种 PAHs（ΣPAHs）。地表水中ΣPAHs 的总浓度范围为 140.6-647.4ng/L，沉积物中的浓度范围为 12.7-573.2ng/g（干重，dw）。低分子量的 2-环和 3-环 PAHs 是水中的主要成分，而 3-环和 4-环 PAHs 在沉积物中含量丰富。荧蒽是水中ΣPAHs 的主要成分，也是沉积物中ΣPAHs 的主要成分。根据源解析，水中的 PAHs 主要来源于化石燃料和石油的燃烧，而石油燃烧是沉积物中 PAHs 的主要贡献者。潜在风险评估的结果表明，地表水中的 PAHs 呈现中等生态风险，而沉积物中的 PAHs 则呈现低生态风险，表明有毒污染的可能性较小。
