Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-Ku, Tokyo 108-8477, Japan.
Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-Ku, Tokyo 108-8477, Japan.
Mar Pollut Bull. 2024 Oct;207:116871. doi: 10.1016/j.marpolbul.2024.116871. Epub 2024 Aug 30.
Microplastic (MP) pollution is a rising environmental concern. This study investigated MP concentrations in Tokyo Bay using neuston net for surface sampling and deep-sea plankton pump for underwater sampling across six stations at multiple depths. Results revealed substantial variation in MP concentrations. Surface large microplastics (LMP, > 350 μm) ranged from 0.21 × 10 to 3.34 × 10 pieces L, averaging 1.26 × 10 pieces L, while surface small microplastics (SMP, 60 μm to 350 μm) were highest at head of the bay (11.5 ± 3.05 pieces L). SMP concentrations varied with depth and position, peaking at center of the bay (5.79 ± 1.63 pieces L at 2 m). Additionally, the total amount of surface LMP was estimated at 10.3 m and SMP at 15.0 m in the Tokyo Bay. This study provides a comprehensive picture of the spatial and vertical distribution of MP in Tokyo Bay.
微塑料（MP）污染是一个日益严重的环境问题。本研究使用网口采集器对东京湾的海面样本进行采样，使用深海浮游生物泵对水下样本进行采样，在六个站位的多个深度进行了研究。结果表明，MP 浓度存在很大差异。海面大型微塑料（LMP，>350μm）浓度范围为 0.21×10 至 3.34×10 个/升，平均值为 1.26×10 个/升，而海面小型微塑料（SMP，60μm 至 350μm）在湾口浓度最高（11.5±3.05 个/升）。SMP 浓度随深度和位置而变化，在湾中心达到峰值（2m 处为 5.79±1.63 个/升）。此外，估计东京湾的 LMP 表面总量为 10.3m，SMP 为 15.0m。本研究提供了东京湾 MP 空间和垂直分布的全面情况。
