浮游生物和微塑料对海洋溢油迁移归趋影响研究进展

Progress in the Impact of Plankton and Microplastics on the Transport and Fate of Marine Oil Spills

  • 摘要: 海洋溢油事故发生后,表层浮油在物理和生物作用下发生迁移和转化行为,海洋中不同浮游动植物、细菌和微塑料在海浪的推动下,与分散的石油发生碰撞并附着形成聚合体或团聚体,这种聚合体或团聚体会悬浮在水体中或沉降至海底。其中浮游动物通过摄食油滴和排泄的方式将石油包裹在粪便颗粒中;浮游植物和细菌则在其分泌的黏液作用下,与大量的石油和悬浮颗粒物聚合;细菌通过分解油滴中的石油烃类化合物,进一步降低了油污浓度;微塑料与油滴则可以在分子间力的作用下,形成团聚体。本文综述了浮游动植物、细菌和微塑料对海洋溢油迁移归趋的研究现状,可为后续研究石油在海洋中的行为归趋提供支持。

     

    Abstract: Following oil spill incidents, surface oil undergoes complex migration and transformation in the water column due to physical, chemical and biological actions. Various zooplankton and phytoplankton, along with bacteria and microplastics, interact with dispersed oil droplets under wave-induced turbulence, leading to the formation of aggregates or agglomerates. These aggregates/agglomerates may remain suspended in the water column or settle on the seafloor. Zooplankton ingest oil droplets and subsequently excrete them as fecal pellets, encapsulating the oil. Phytoplankton and bacteria facilitate the aggregation of oil with suspended particulate matter via secreted mucus; additionally, bacteria degrade petroleum hydrocarbons, thereby reducing oil concentrations. Microplastics adhere to oildroplets through intermolecular forces, contributing to the formation of agglomerates. This paper summarizes the current status of research on the transport and fate of marine oil spill by zooplankton and phytoplankton, bacteria, and microplastics, which can support subsequent studies of oil behavior and fate in the ocean.

     

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