School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361021, China; Xiamen Key Laboratory of Membrane Research and Application, Xiamen 361024, China.
State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361102, China; Xiamen Marine Vocational and Technical College, Xiamen 361102, China; Key Laboratory of Marine Chemistry and Application Technology, Xiamen University, Xiamen 361102, China; College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China.
Mar Pollut Bull. 2024 Jun;203:116489. doi: 10.1016/j.marpolbul.2024.116489. Epub 2024 May 16.
Sansha and Luoyuan Bay are influenced by different industrial structure, but the sources and pollution status of polycyclic aromatic hydrocarbons (PAHs), especially alkylated PAHs, are poorly understood. We studied 25 PAHs in surface sediments from the two bays. The results showed that PAHs concentrations in Sansha and Luoyuan Bay sediment range from 6.54 to 479.28 ng/g and 118.82 to 2984.09 ng/g, respectively. Alkylated PAHs dominated in Sansha (48.86 % of ΣPAHs), while 3-ring PAHs dominated in Luoyuan (36.32 % of ∑PAHs). Results of sources analysis indicated oil spills as the main PAHs source in Sansha, and domestic emissions and fossil fuel combustion in Luoyuan. Ecological risk assessment of showed low sediment risk, but in Luoyuan was higher than in Sansha. Compared with Luoyuan Bay, Sansha Bay emits less industrial pollutants, so the pollution is lower than Luoyuan Bay. Increased attention to protecting Luoyuan Bay is recommended.
三沙和罗源湾受到不同工业结构的影响，但多环芳烃（PAHs），特别是烷基化多环芳烃的来源和污染状况了解甚少。我们研究了这两个海湾表层沉积物中的 25 种多环芳烃。结果表明，三沙和罗源湾沉积物中 PAHs 浓度范围分别为 6.54 至 479.28ng/g 和 118.82 至 2984.09ng/g。烷基化多环芳烃在三沙占主导地位（ΣPAHs 的 48.86%），而在罗源则以三环多环芳烃为主（∑PAHs 的 36.32%）。来源分析结果表明，油溢是三沙地区多环芳烃的主要来源，而陆源排放和化石燃料燃烧是罗源的主要来源。生态风险评估显示，沉积物风险较低，但罗源湾的风险高于三沙湾。与罗源湾相比，三沙湾排放的工业污染物较少，因此污染程度低于罗源湾。建议增加对保护罗源湾的重视。
