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Occurrence, distribution and affecting factors of microplastics in agricultural soils along the lower reaches of Yangtze River, China

文献类型： 外文期刊

作者： Cao, Lu 1 ; Wu, Di 1 ; Liu, Peng 2 ; Hu, Wenyou 2 ; Xu, Li 3 ; Sun, Yicheng 1 ; Wu, Qiumei 2 ; Tian, Kang 2 ; Huang, Biao 2 ; Y 1 ;

作者机构： 1.Zhejiang Ocean Univ, Sch Marine Engn Equipment, Zhoushan 316022, Peoples R China

2.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China

3.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Agr Stand & Testing, Beijing 100095, Peoples R China

4.Seoul Natl Univ, Sch Earth & Environm Sci, Seoul 08826, South Korea

5.Seoul Natl Univ, Res Inst Oceanog, Seoul 08826, South Korea

6.Kunsan Natl Univ, Dept Marine Biotechnol, Kunsan 54150, South Korea

关键词： Microplastics; Agriculture soils; Spatial distribution; Affecting factors; Sources

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2021 年 794 卷

页码：

收录情况： SCI

摘要： Microplastics become one of the serious persistent pollutants in terrestrial environments, and thus may repre-sent a threat to the quality of soil and inhabiting organisms. It is imperative to understand occurrence and distri-bution of microplastics in soils. In this study, a large-scale field survey encompassing 85 locations along the lower reaches of Yangtze River and estuary was performed to investigate the microplastics abundance in agricultural soils. Microplastics were isolated from all the samples and all depths (0-80 cm). The microplastics abundance in soils ranged from 4.94 items/kg to 252.70 items/kg, with an average of 37.32 items/kg. The most common microplastic type detected was Polypropylene (PP) occurring as white fragments with sizes ranging from 0.1 mm to 0.5 mm. Abiotic parameters such as soil pH and texture were the general factors being associated with microplastic abundance. Meantime, traffic was indicated as one important factor to affect the microplastic abundance. Overall, the road input seems to be the main source of microplastic pollution in agricultural areas along the Yangtze River and estuary. Further studies should elucidate the original of the plastic fragments in order to establish a baseline for regulative initiatives securing environmental protection. (c) 2021 Elsevier B.V. All rights reserved.

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