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首页> 外文期刊>Limnologica >First empirical study of freshwater microplastics in West Africa using gastropods from Nigeria as bioindicators
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First empirical study of freshwater microplastics in West Africa using gastropods from Nigeria as bioindicators

机译：尼日利亚胃食渣作为生物indicators的胃食品淡水微塑料的首次实证研究

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Freshwater environments are the route through which inland plastics are transported to the ocean, explaining why the number of freshwater microplastic (MP) studies has recently been increasing. Despite the lack of recycling and the presence of severe plastic pollution in many African countries, MPs have been scarcely reported in African freshwaters and the current study gives the first empirical account for West Africa. The study investigates MP pollution in an important West African river system (Osun River system, Nigeria) and gives an insight into microplastic contamination in a main European river (Rhine River), using gastropods which are potential consumers of MPs, from both systems. From the Osun River system, the most common gastropods (Lanistes varicus and Melanoides tuberculata) were analysed for MP contamination. Two MP types (fibre and film) were recorded in L. varicus, whereas only fibre was recorded in M. tuberculata. Micro-Fourier-transform infrared spectroscopy (mu FTIR) revealed that the MP films in the African gastropods were made of polyethylene and strongly resembled black polyethylene bags that covered the Osun River banks. From the Rhine River, the gastropod Theodoxus fluviatihs was analysed and nylon as well as polypropylene fibres were found. In both systems (Osun River and Rhine River), fibre was the dominant MP type. In conclusion, the study shows that MP contamination in Nigeria, a West African country with a lack of recycling and poor waste management practice, is reflected in two different local gastropod species. Furthermore, the comparison with a European gastropod species shows that fibres are the dominant MP type in gastropods from both freshwater systems. In both systems, MPs ingested by the gastropods could be transferred to higher trophic levels following predation. We therefore recommend that more empirical studies should be carried out along different feeding guilds of African freshwater invertebrates and fish. When MPs are trans
机译：淡水环境是内陆塑料被运输到海洋的途径，解释为什么淡水微塑料（MP）研究的数量最近一直在增加。尽管许多非洲国家缺乏回收率和严重塑料污染的存在，但在非洲新鲜水域中几乎没有报告国会议员，目前的研究给出了西非的第一个实证账户。该研究调查了一个重要的西非河流系统（Osun River System，Nigeria）中的MP污染，并在主要的欧洲河流（莱茵河）的微塑污染中，使用宇宙的宇宙污染，这是来自两种系统的潜在消费者的潜在消费者。从Osun河系统中，分析了MP污染的最常见的美食（Lanistes Varicus和Melanoides Tuberculata）。在L. varicus中记录了两个MP类型（纤维和薄膜），而只有纤维被记录在M.Tuberculata中。微傅里叶变换红外光谱（MU FTIR）揭示了非洲美食件中的MP薄膜由聚乙烯制成，并强烈类似地覆盖Osun河岸的黑色聚乙烯袋。从莱茵河河流中，分析了Gastropod Theodoxus fluviatihs，并发现了尼龙以及聚丙烯纤维。在两个系统（Osun River和Rhine River）中，光纤是主导MP类型。总之，该研究表明，尼日利亚的MP污染是一个缺乏回收和贫困废物管理实践的西非国家，反映在两种不同的地方美食物种中。此外，与欧洲胃肠杆菌物种的比较表明，纤维是来自淡水系统的胃肠杆菌中的主要MP型。在两个系统中，通过胃胚层摄取的MPS可以在捕食后转移到更高的营养水平。因此，我们建议使用更多的实证研究沿着非洲淡水无脊椎动物和鱼类的不同饲养行会进行。当MPS是跨

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