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Occurrence and distribution of micro- and mesoplastics in the high-latitude nature reserve, northern China

文献类型： 外文期刊

作者： Gong, Wenwen 1 ; Xing, Yu 1 ; Han, Lihua 1 ; Lu, Anxiang 1 ; Qu, Han 3 ; Xu, Li 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Agr Stand & Testing, Beijing 100097, Peoples R China

2.Beijing Municipal Key Lab Agr Environm Monitoring, Beijing 100097, Peoples R China

3.Univ Arizona, Coll Med, Dept Pharmacol, Tucson, AZ 85721 USA

关键词： Microplastics; Mesoplastics; Water; Sediment; Characteristic; Risk Assessment

期刊名称：FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING （ 影响因子：6.048； 五年影响因子：5.227 ）

ISSN： 2095-2201

年卷期： 2022 年 16 卷 9 期

页码：

收录情况： SCI

摘要： Microplastics pollution has received growing attention worldwide in recent years. However, data on microplastics in the freshwater environment are still limited, especially in high-latitude nature reserves in Northern China. The first study on microplastic pollution in the Liaohe River Reserve in Northern China is reported here, and mesoplastics were also incorporated. Surface water and sediment samples were collected from 32 sites along the nature reserve. The abundance, type, shape, color, and size of micro- and mesoplastics were measured using density extraction, optical microscopy, and FTIR spectroscopy. The data showed that diverse micro- and mesoplastics were found widespread in the 32 sites, and the average abundance of these plastics was 0.11 +/- 0.04 10(-2) items/L in surface water and 62.29 +/- 54.30 items/kg in sediment. Moreover, 70% and 66% were smaller than 2000 mu m in surface water and sediment, respectively. Fiber accounted for 91.86% in surface water and 43.48% in sediment, indicating that the major source of micro- and mesoplastics in the Liaohe River Reserve may be domestic sewage and aquaculture. A total of 16 and 27 polymers were identified in surface water and sediment, respectively, and mostly consisted of rayon, polyester, polystyrene, and poly(ethylene terephthalate). Moreover, both the risk index and the pollution load index demonstrated a low risk of micro- and mesoplastics in surface water and sediment in the Liaohe River Reserve. (C) Higher Education Press 2022

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