Fisheries Department, Faculty of Natural Resources, University of Guilan, Sowmehsara, Iran.
Fisheries Department, Faculty of Natural Resources, University of Guilan, Sowmehsara, Iran; Department of Marine Biology, The Caspian Sea Research Center, University of Guilan, Rasht, Iran.
Mar Pollut Bull. 2020 Nov;160:111541. doi: 10.1016/j.marpolbul.2020.111541. Epub 2020 Aug 24.
The occurrence, abundance and distribution of microplastics (MPs) were studied in sediments and surface waters of the Anzali coastal wetland, southwest of the Caspian Sea. Sediment and surface water samples were taken at 11 and 6 stations in June 2018 and January 2019 respectively. The abundances of MPs in sediment samples were 140-2820 and 113-3690 items/kg dry weight while in surface waters were 0.40-4.41 and 0.19-2.85 items/m in June and January respectively. Fiber was the most common shape, followed by fragment and film. Red, black and blue were the most frequent colors. Particles 1-2 mm were the dominant size. SEM/EDS and ATR-FTIR analyses were used to identify MPs. Polypropylene, polyethylene and polyester were the most frequently found polymers. Our results highlighted the widespread dispersion of MPs in Anzali Wetland which in turn might be a pathway of MPs pollution transporter to the adjacent and connected Caspian Sea.
本研究调查了里海西南安扎利沿海湿地沉积物和表层水中微塑料（MPs）的存在、丰度和分布。于 2018 年 6 月和 2019 年 1 月分别在 11 个和 6 个站位采集沉积物和表层水样品。沉积物样品中 MPs 的丰度为 140-2820 项/kg 干重，表层水中的丰度为 0.40-4.41 和 0.19-2.85 项/m，分别在 6 月和 1 月。纤维是最常见的形状，其次是碎片和薄膜。红色、黑色和蓝色是最常见的颜色。1-2 毫米的颗粒是主要的尺寸。采用扫描电子显微镜/能谱仪（SEM/EDS）和衰减全反射傅里叶变换红外光谱（ATR-FTIR）分析来识别 MPs。聚丙烯、聚乙烯和聚酯是最常发现的聚合物。研究结果表明 MPs 在安扎利湿地的广泛分布，而湿地又可能是 MPs 污染向毗邻的里海输送的途径之一。
