由燃烧油产生的烟尘颗粒形成海洋油雪。
Formation of marine oil snow by soot particles generated from burning of oils.
机构信息
College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, PR China; International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), Shanghai Maritime University, Shanghai 201306, PR China.
College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, PR China.
出版信息
Mar Pollut Bull. 2024 Aug;205:116626. doi: 10.1016/j.marpolbul.2024.116626. Epub 2024 Jul 2.
This study aims to investigate the interactions between marine oil snow (MOS) formation and soot particles derived from two distinct oils: condensate and heavy oil. Experimental findings demonstrate that the properties of oil droplets and soot particles play a key role in MOS formation. Peak MOS formation is observed within the initial days for condensate, while for heavy oil, peak formation occurs at a later stage. Furthermore, the addition of oils and soot particles influences the final concentrations of polycyclic aromatic hydrocarbons (PAHs) in MOS. Remarkably, the ranking order of PAHs with different rings in various MOS samples remains consistent: 4- > 3- > 5- > 2- > 6-ring. Specific diagnostic ratios such as Phe/Ant, Ant/(Ant + Phe), BaA/(Chr + BaA), and LMW/HMW effectively differentiate petrogenic and pyrogenic sources of PAHs in MOS. And stable ratios like Flu/(Pyr + Flu), InP/(InP + BghiP), and BaF/BkF are identified for source analysis of soot MOS.
本研究旨在探讨海洋油雪（MOS）形成与源自两种不同油类的烟尘颗粒之间的相互作用：凝析油和重油。实验结果表明，油滴和烟尘颗粒的性质在 MOS 形成中起着关键作用。凝析油在最初几天内达到 MOS 形成的峰值，而重油则在后期达到峰值。此外，油和烟尘颗粒的添加会影响 MOS 中多环芳烃（PAHs）的最终浓度。值得注意的是，不同 MOS 样品中环数不同的 PAHs 的排序顺序保持一致：4- > 3- > 5- > 2- > 6-环。特定的诊断比值，如 Phe/Ant、Ant/(Ant + Phe)、BaA/(Chr + BaA)和 LMW/HMW，可有效区分 MOS 中多环芳烃的生源和热成因来源。而稳定比值，如 Flu/(Pyr + Flu)、InP/(InP + BghiP)和 BaF/BkF，则可用于烟尘 MOS 的源分析。
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