Microplastics in sediment of the Three Gorges Reservoir: abundance and characteristics under different environmental conditions

Wang LI; Bo ZU; Yiwei LIU; Juncheng GUO; Jiawen LI

doi:10.1007/s00343-023-2397-x

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Microplastics in sediment of the Three Gorges Reservoir: abundance and characteristics under different environmental conditions

Chemistry | Updated：2024-10-15

- Microplastics in sediment of the Three Gorges Reservoir: abundance and characteristics under different environmental conditions
- Microplastics in sediment of the Three Gorges Reservoir: abundance and characteristics under different environmental conditions
- 海洋湖沼学报(英文) 2024年42卷第1期页码：101-112
- Affiliations：
  
  1.College of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China
  2.Chongqing Research Academy of Ecology and Environmental Sciences, Chongqing 401147, China
- Author bio：
  
  zubo@cqjtu.edu.cn
- Funds：
  
  the Natural Science Foundation of Chongqing, China(cstc2020jcyj-msxmX0763)
- DOI：10.1007/s00343-023-2397-x
  中图分类号：
- 收稿：2022-12-24，
  
  录用：2023-02-21，
  
  网络首发：2023-03-09，
  
  纸质出版：2024-01-03
- Accepted：
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Microplastics in sediment of the Three Gorges Reservoir: abundance and characteristics under different environmental conditions[J]. 海洋湖沼学报(英文), 2024,42(1):101-112.

LI Wang,ZU Bo,LIU Yiwei,et al.Research Paper Microplastics in sediment of the Three Gorges Reservoir: abundance and characteristics under different environmental conditions[J].Journal of Oceanology and Limnology,2024,42(01):101-112.
Microplastics in sediment of the Three Gorges Reservoir: abundance and characteristics under different environmental conditions[J]. 海洋湖沼学报(英文), 2024,42(1):101-112. DOI： 10.1007/s00343-023-2397-x.

LI Wang,ZU Bo,LIU Yiwei,et al.Research Paper Microplastics in sediment of the Three Gorges Reservoir: abundance and characteristics under different environmental conditions[J].Journal of Oceanology and Limnology,2024,42(01):101-112. DOI： 10.1007/s00343-023-2397-x.

摘要

Abstract

Freshwater microplastic pollution is an urgent issue of global concern

and research on the distribution in reservoirs is lacking. We investigated the microplastic pollution levels in wet sediments collected from the Three Gorges Reservoir

the largest reservoir of China. Results show that microplastics were ubiquitous in the sediments of the Three Gorges Reservoir

and their abundance ranged from 59 to 276 pp/kg (plastic particles per kg

dry weight). Economic development and total population were important factors affecting the spatial heterogeneity of microplastic abundance

and the contribution of large cities along the reservoir to microplastic pollution should be paid with more attention. Fibrous microplastics were the most abundant type of microplastic particles in reservoir sediments

whereas polystyrene

polypropylene

and polyamide were the main types of polymers. The apparent spatial heterogeneity in morphology and color of microplastics is attributed to different anthropogenic or land-based pollution sources. Moreover

the accumulation of microplastics near the inlet of tributaries reflects the role of potential contributors of tributaries. More importantly

multiple bisphenols (BPs) and heavy metals detected at the microplastic surfaces indicate that microplastics can act as carriers of these pollutants in the environment in the same way as sediments did

which may alter the environmental fate and toxicity of these pollutants. Therefore

we conclude that the Three Gorges Reservoir had been contaminated with microplastics

which posed a stress risk for organisms who ingest them along with their associated pollutants (BPs

heavy metals).

关键词

Keywords

references

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