Abstract：
Microplastic (MP) pollution has been observed in various ecosystems as a result of the rapid increase in plastic production over the past half-century. Nevertheless, the extent of MP pollution in different ecosystems, particularly in freshwater ecosystems, has not been well-studied, and there are limited investigations on this particular topic, specifically in Türkiye. Here, we quantify the occurrence and distribution of MPs in surface water samples collected from Topçu Pond (Türkiye) for the first time. Water samples were collected at five stations and filtered (30 L for each station) through stacked stainless steel sieves (5 mm, 328 µm, and 61 µm mesh size) with a diameter of 30 cm. The abundance, size, color, shape, and type of collected debris samples were analyzed after the wet peroxide oxidation process. MP particles were observed in all samples at an average abundance of 2.4 MPs/L. The most abundant MP size class and type were 0-999 µm and fiber respectively. On the other hand, prevalent colors were black and colorless in general. According to the Raman analysis results, the identified MP derivatives were polypropylene (40%), polyamide (30%), ethylene acrylic acid (20%), and polyvinylchloride (10%). Moreover, the pollution load index (PLI) index was used to determine the pollution status. PLI values were determined as 1.91 at station S1, 1.73 at station S2, 1.31 at station S3, 1 at station S4 and 1.24 at station S5. The PLI value determined for the overall pond was 1.4. The results of this research show that MP pollution is present in Topçu Pond and contributes to the expanding literature on MP pollution in pond ecosystems.
摘要：
在过去的半个世纪中，由于塑料产量的快速增长，在各种生态系统中都观察到了微塑料（MP）污染。然而，不同生态系统中MP污染的程度，特别是在淡水生态系统中，没有得到很好的研究，关于这个特定主题的调查有限，特别是在图尔基耶。这里,我们首次量化了从TopçuPond（Türkiye）收集的地表水样品中MP的发生和分布。在五个站收集水样，并通过堆叠的不锈钢筛（5毫米，328µm,和61µm的网眼尺寸），直径为30厘米。丰富，尺寸,颜色,形状,湿过氧化物氧化过程后，分析了收集的碎片样品的类型。在所有样品中观察到MP颗粒的平均丰度为2.4MPs/L。最丰富的MP尺寸类别和类型分别为0-999µm和纤维。另一方面,普遍的颜色是黑色和无色。根据拉曼分析结果,确定的MP衍生物是聚丙烯(40%)，聚酰胺(30%),乙烯丙烯酸(20%),和聚氯乙烯(10%)。此外，污染负荷指数(PLI)指数用于确定污染状况。PLI值在S1站确定为1.91，在S2站确定为1.73，在S3站确定为1.31，在S4站确定为1，在S5站确定为1.24。对整个池塘测定的PLI值为1.4。这项研究的结果表明，MP污染存在于TopçuPond中，并有助于扩大有关池塘生态系统中MP污染的文献。
