Eldivan Vocational School of Health Services, Environmental Health Program, Çankırı Karatekin University, Çankırı, Turkey.
Biology Department, Faculty of Art and Science, Kırıkkale University, Kırıkkale, Turkey.
Environ Sci Pollut Res Int. 2020 Dec;27(36):45688-45698. doi: 10.1007/s11356-020-10424-9. Epub 2020 Aug 15.
The evaluation of microplastic (MP) pollution has been drawing attention for the last decades. MP pollution has been studied widely in marine environments, but limited data exists for freshwater ecosystems on potential source and transport of MPs. The type, shape, plastic components, and the color of the MPs were investigated using various-mesh-sizes (300 and 100 μm) nets in four sampling stations of Süreyyabey Dam Lake in Turkey. The growth of bacterial isolates on the MPs surface and surrounding water was also investigated. The type of the MPs and the interaction between the mesh size and the type of the MPs showed significant differences (p < 0.05). Fibers were found to be the most abundant particle type constituting 45% and 80% of the total MPs found in 330-μm and 100-μm mesh sizes, respectively. In total the observed MP abundance in the dam lake was 5.25 particles m, and 4.09 particles m was observed for 100-μm and 330-μm mesh sizes, respectively. The color of the identified microplastics showed variations among microplastic types; however, the dominant color was transparent in each net. The main plastic components of the MPs are polyethylene terephthalate, polyvinyl chloride, polystyrene, polyethylene, and polypropylene. The microbial community mainly consists of potentially pathogenic strains such as Escherichia coli, Enterococcus faecalis, and Acinetobacter baumanii complex. The current study could contribute valuable background information both for MP pollution and for biofilm composition in a dam. However, the surface of the MPs and biofilm formation should be investigated urgently to understand the vector potential of MPs.
过去几十年来，人们一直关注微塑料 (MP) 污染的评估。MP 污染已在海洋环境中得到广泛研究，但关于淡水中 MPs 的潜在来源和迁移，相关数据有限。在土耳其 Süreyyabey 大坝湖的四个采样点，使用不同网眼尺寸（300 和 100μm）的网收集了微塑料，研究了其类型、形状、塑料成分和颜色。还研究了 MPs 表面和周围水中细菌分离物的生长情况。MP 的类型以及网眼尺寸和 MP 类型之间的相互作用均表现出显著差异（p<0.05）。纤维是最丰富的颗粒类型，分别占 330μm 和 100μm 网眼尺寸中总 MPs 的 45%和 80%。大坝湖中观察到的 MPs 丰度总计为 5.25 个颗粒/m，100μm 和 330μm 网眼尺寸分别观察到 4.09 个颗粒/m。鉴定出的微塑料的颜色在微塑料类型之间存在差异；然而，在每个网中，透明色是主要颜色。MP 的主要塑料成分是聚对苯二甲酸乙二醇酯、聚氯乙烯、聚苯乙烯、聚乙烯和聚丙烯。微生物群落主要由潜在的致病菌株组成，如大肠杆菌、粪肠球菌和鲍曼不动杆菌复合体。本研究可为 MP 污染和大坝中生物膜组成提供有价值的背景信息。然而，迫切需要研究 MPs 表面和生物膜形成，以了解 MPs 的载体潜力。
