在尼日利亚,对内陆河流中的微塑料(MPs)进行了有限的研究,需要进行全面评估以了解污染程度。这项研究旨在评估丰度,分布,以及鱼类中国会议员的组成,沉积物,以及来自尼日利亚六个地缘政治区的内陆河流的水。样本是从每个地缘政治区域的选定河流中收集的(RiversYauri,Benue,Argungu,Jamare,奥贡,Ethiope和Orashi)。使用过滤组合分离MPs,密度分离,和视觉识别。议员丰富,分布,形状,颜色,使用显微镜和傅里叶变换红外光谱确定化学成分。该研究提出了尼日利亚陆地河流中的六个国会议员的第一份报告,发现国会议员存在于所有鱼类中,研究了所有河流的沉积物和河水。MPs的丰度和组成在不同的样本类型之间有所不同,纤维是水和鱼样本中最丰富的形状。PET,PP,PE是鱼类样本中最常见的塑料类型,而PE/PA/尼龙,PVA,和PVC在水样中占主导地位。PA/尼龙,PUR,PVC,PET在沉积物样品中最常见。通过主成分分析(PCA)和层次聚类分析(HCA)进行的来源分析表明,MP的存在主要受当地人为活动的影响。然而,估计每日摄入量普遍较低,表明每天食用样品不太可能有害。国会议员在尼日利亚内陆河中的广泛存在凸显了迫切需要有效的废物管理策略和环境保护努力来减轻塑料污染。
In Nigeria, limited research has been conducted on Microplastics (MPs) in inland rivers, necessitating a comprehensive assessment to understand the extent of contamination. This study aimed to assess the abundance, distribution, and composition of MPs in fishes, sediment, and water from inland rivers across Nigeria\'s six geopolitical zones. Samples were collected from selected rivers in each geopolitical zone (Rivers Yauri, Benue, Argungu, Jamare, Ogun, Ethiope and Orashi). MPs were isolated using a combination of filtration, density separation, and visual identification. MPs abundance, distribution, shapes, colors, and chemical composition were determined using microscopy and Fourier-transform infrared spectroscopy. The study presents the first report of MPs in six in land rivers in Nigeria and found that MPs were present in all the fishes, sediments and river waters studied across all the rivers. The abundance and composition of MPs varied among the different sample types, with fibers being the most abundant shape in both water and fish samples. PET, PP, and PE were the most prevalent types of plastics found in fish samples, while PE/PA/Nylon, PVA, and PVC were predominant in water samples. PA/Nylon, PUR, PVC, and PET were the most common in sediment samples. Source analysis by Principal component analysis (PCA) and Hierarchical Cluster Analysis (HCA) indicated that the presence of MPs was mainly influenced by local anthropogenic activities. However, estimated daily intakes are generally low, indicating that daily consumption of the samples is not likely to be harmful. The widespread presence of MPs in inland rivers across Nigeria highlights the urgent need for effective waste management strategies and environmental conservation efforts to mitigate plastic pollution.