TY - JOUR
T1 - Contamination of seabed sediments in Tokyo Bay by small microplastic particles
AU - Wang, Yehao
AU - Nakano, Haruka
AU - Xu, Haodong
AU - Arakawa, Hisayuki
N1 - Funding Information:
A part of this study was supported by the Environmental Research and Technology Development Fund ( JPMEERF18S20208 ) of the Environmental Restoration and Conservation Agency of Japan, Japan .
Funding Information:
A part of this study was supported by the Environmental Research and Technology Development Fund (JPMEERF18S20208) of the Environmental Restoration and Conservation Agency of Japan, Japan. We appreciate the cooperation of the staff from the training ships (Seiyo-maru and Hiyodori) of the Tokyo University of Marine Science and Technology. We also thank Natalie Kim, PhD, from Edanz (https://jp.edanz.com/ac) for editing a draft of this manuscript.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/10/31
Y1 - 2021/10/31
N2 - This study investigated small microplastic particle (SMP, < 350 μm) contamination in the surface seabed sediment of the inner part of Tokyo Bay. The SMP concentration during the rainy season (May) was 100.3 ± 45.8 pieces g−1 dry weight and higher in the inner side of the bay, whereas that of the dry season (January) was 147.6 ± 19.5 pieces g−1 dry weight. There was no seasonal difference. The main plastic types found in the rainy season were polypropylene (PP), polyethylene (PE), and polyamide (PA). In the dry season (January), the concentration of PP decreased while that of PA increased. The mean SMP diameter did not change by site or season. Our results indicate that the seabed sediments in the inner part of Tokyo Bay are contaminated with relatively high concentrations of SMPs. Furthermore, the deposition rate of SMPs in the inner part of the bay was 12.4 mg cm−2 y−1.
AB - This study investigated small microplastic particle (SMP, < 350 μm) contamination in the surface seabed sediment of the inner part of Tokyo Bay. The SMP concentration during the rainy season (May) was 100.3 ± 45.8 pieces g−1 dry weight and higher in the inner side of the bay, whereas that of the dry season (January) was 147.6 ± 19.5 pieces g−1 dry weight. There was no seasonal difference. The main plastic types found in the rainy season were polypropylene (PP), polyethylene (PE), and polyamide (PA). In the dry season (January), the concentration of PP decreased while that of PA increased. The mean SMP diameter did not change by site or season. Our results indicate that the seabed sediments in the inner part of Tokyo Bay are contaminated with relatively high concentrations of SMPs. Furthermore, the deposition rate of SMPs in the inner part of the bay was 12.4 mg cm−2 y−1.
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U2 - 10.1016/j.ecss.2021.107552
DO - 10.1016/j.ecss.2021.107552
M3 - Article
AN - SCOPUS:85113985016
SN - 0272-7714
VL - 261
JO - Estuarine, Coastal and Shelf Science
JF - Estuarine, Coastal and Shelf Science
M1 - 107552
ER -