Contamination of sea surface water offshore the Tokai region and Tokyo Bay in Japan by small microplastics
Contamination of sea surface water offshore the Tokai region and Tokyo Bay in Japan by small microplastics
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DOI：
10.1016/j.marpolbul.2022.114245
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发表时间：
2022-10-21
影响因子：
5.8
通讯作者：
Arakawa，Hisayuki
中科院分区：
文献类型：
--
作者：
Xu，Haodong;Nakano，Haruka;Arakawa，Hisayuki
制备了一个嵌套式双浮游生物网，并用于从日本沿海沃茨表面收集样品，以获得关于小型微塑料（SMP; <350 μm）和大型微塑料（LMP; >350 μm）特性的信息。在公海中，SMP浓度范围为1000至5900个m-3，在东京湾内部平均约为3000个m-3。SMP浓度比LMP浓度高约20-60倍。通过分析海水，我们得到了一个微塑性尺寸分布，跨度为50-5000 μm。流动市场规管计划主要包括与包装有关的塑料，例如聚乙烯及聚丙烯，而流动市场规管计划则以与油漆有关的塑料为主。来自包装材料的SMP（例如，PE）在小于600 μm时可能是逐渐从海面下沉的。
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−3in the open ocean and averaged approximately 3000 pieces m−3in 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.