TY - JOUR
T1 - Contamination of sea surface water offshore the Tokai region and Tokyo Bay in Japan by small microplastics
AU - Xu, Haodong
AU - Nakano, Haruka
AU - Tokai, Tadashi
AU - Miyazaki, Tadashi
AU - Hamada, Hiroaki
AU - Arakawa, Hisayuki
N1 - Funding Information:
We acknowledge the support received from the staff of the research vessels (Seiyo Maru and Shinyo Maru) from the Tokyo University of Marine Science and Technology. We thank Natalie Kim, PhD, from Edanz (https://jp.edanz.com/ac) for editing a draft of this manuscript. This study was supported by the Environmental Research and Technology Development Fund (JPMEERF18S20208) (JPMEERF20211003) of the Environmental Restoration and Conservation Agency of Japan and the JSPS KAKENHI Grant-in-Aid for Scientific Research (B) Grant Number JP20H03060 from the Society for the Promotion of Science, Japan. H.X. and H.A. conceived and designed the experiments. H.X. H.N. T.M. H.H. and H.A. performed the field observations. H.X. and H.N. analyzed the data. H.X. T.T. and H.A. wrote the paper. All authors reviewed and approved of the manuscript.
Funding Information:
This study was supported by the Environmental Research and Technology Development Fund ( JPMEERF18S20208 ) ( JPMEERF20211003 ) of the Environmental Restoration and Conservation Agency of Japan and the JSPS KAKENHI Grant-in-Aid for Scientific Research (B) Grant Number JP20H03060 from the Society for the Promotion of Science , Japan.
Publisher Copyright:
© 2022 The Author(s)
PY - 2022/12
Y1 - 2022/12
N2 - 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.
AB - 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.
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U2 - 10.1016/j.marpolbul.2022.114245
DO - 10.1016/j.marpolbul.2022.114245
M3 - Article
C2 - 36279726
AN - SCOPUS:85140244138
SN - 0025-326X
VL - 185
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
M1 - 114245
ER -