Contamination of sea surface water offshore the Tokai region and Tokyo Bay in Japan by small microplastics

Haodong Xu, Haruka Nakano, Tadashi Tokai, Tadashi Miyazaki, Hiroaki Hamada, Hisayuki Arakawa

研究成果: ジャーナルへの寄稿学術誌査読

18 被引用数 (Scopus)

抄録

A nested double neuston net was prepared and used to collect samples from the surface of coastal waters around Japan to obtain information about the properties of both small microplastics (SMPs; <350 μm) and large microplastics (LMPs; >350 μm). The SMP concentrations ranged from 1000 to 5900 pieces m−3 in the open ocean and averaged approximately 3000 pieces m−3 in the inner part of Tokyo Bay. The SMP concentrations were around 20–60 times greater than the LMP concentrations. By analyzing the seawater, we obtained a microplastic size distribution that spanned 50–5000 μm. The LMPs mainly comprised packaging-related plastics, such as polyethylene (PE) and polypropylene, while the SMPs were dominated by paint-related plastics. SMPs derived from packaging materials (e.g., PE) may have gradually sank down from the sea surface when they were smaller than 600 μm.

本文言語英語
論文番号114245
ジャーナルMarine Pollution Bulletin
185
DOI
出版ステータス出版済み - 12月 2022
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 海洋学
  • 水圏科学
  • 汚染

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