State Key Laboratory of Estuarine and Costal Research, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China.
State Key Laboratory of Estuarine and Costal Research, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China.
Environ Pollut. 2015 Nov;206:597-604. doi: 10.1016/j.envpol.2015.08.027. Epub 2015 Aug 25.
Estuarine Microplastics (MPs) are limited to know globally. By filtering subsurface water through 330 μm nets, MPs in Jiaojiang, Oujiang Estuaries were quantified, as well as that in Minjiang Estuary responding to Typhoon Soulik. Polymer matrix was analyzed by Raman spectroscopy. MP (<5 mm) comprised more than 90% of total number plastics. The highest MPs density was found in Minjiang, following Jiaojiang and Oujiang. Fibers and granules were the primary shapes, with no pellets found. Colored MPs were the majority. The concentrations of suspended microplastics determine their bioavailability to low trophic organisms, and then possibly promoting the transfer of microplastic to higher trophic levels. Polypropylene and polyethylene were the prevalent types of MPs analyzed. Economic structures in urban estuaries influenced on MPs contamination levels. Typhoon didn't influence the suspended MP densities significantly. Our results provide basic information for better understanding suspended microplastics within urban estuaries and for managerial actions.
河口微塑料（MPs）在全球范围内的研究还很有限。通过用 330μm 的网过滤底层水，定量了椒江、瓯江河口以及受台风“苏力”影响的闽江口的 MPs，并通过拉曼光谱分析了聚合物基质。<5mm 的 MPs 占塑料总数的 90%以上。闽江口的 MPs 密度最高，其次是椒江和瓯江口。纤维和颗粒是主要形状，没有发现小球体。有色 MPs 占多数。悬浮微塑料的浓度决定了它们对低营养级生物的生物可利用性，从而可能促进微塑料向更高营养级的转移。聚丙烯和聚乙烯是分析中最常见的 MPs 类型。城市河口的经济结构对 MPs 的污染水平有影响。台风对悬浮 MPs 密度的影响不显著。我们的研究结果为更好地了解城市河口悬浮微塑料提供了基础信息，并为管理行动提供了参考。
