Horizontal and vertical distribution of microplastics in the Wuliangsuhai Lake sediment, northern China

被引：0
|
作者：
Mao R. [1 ]
Song J. [1 ]
Yan P. [1 ]
Ouyang Z. [1 ,2 ]
Wu R. [3 ]
Liu S. [4 ]
Guo X. [1 ,2 ]
机构：
[1] College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi
[2] Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shaanxi
[3] State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control, South China Institute of Environmental Sciences, MEE, Guangzhou
[4] Faculty of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing
来源：
Science of the Total Environment | 2021年 / 754卷
基金：
中国国家自然科学基金;
关键词：
Abundance; Microplastics; Sediment; Wuliangsuhai Lake;
D O I：
10.1016/j.scitotenv.2020.142426
中图分类号：
学科分类号：
摘要：
Microplastics are ubiquitous in the environment, sediments in the water body are considered as the sink of microplastics, but its accumulation and change trend have received little attention. We assessed the concentrations of microplastics in sediment samples collected in Wuliangsuhai Lake. The abundance of microplastics (0–6 cm) in surface sediment ranged from 16.5 to 72.4 particles 100 g−1 dry weight. The results show that the abundance, type and size of microplastics in surface sediment of different functional areas are different. Four sampling points were selected to investigate the vertical distribution of microplastics. The abundance of microplastics exhibited a clear decreasing trend with increased sediment depth, the abundance of microplastics in deep sediments is much less. This result shows that when estimating the storage of microplastics in sediments, if only considered the surface sediments, the assessment of microplastic storage worldwide might be underestimated. © 2020 Elsevier B.V.
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