Distribution, Sources, and Risk Assessment of Microplastics in Surface Sediments of Yellow River Delta Wetland

被引：1
|
作者：
Geng N. [1 ,2 ]
Zhao G.-M. [3 ]
Zhang D.-H. [1 ,2 ]
Yuan H.-M. [3 ]
Li X.-G. [1 ,2 ]
机构：
[1] College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao
[2] Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao
[3] Qingdao Institute of Marine Geology, China Geological Survey, Qingdao
来源：
Huanjing Kexue/Environmental Science | 2023年 / 44卷 / 09期
关键词：
ecological risk; microplastics (MPs); pollution status; wetland; Yellow River Delta (YRD);
D O I：
10.13227/j.hjkx.202210339
中图分类号：
学科分类号：
摘要：
Estuarine habitats are a critical zone of the Earth with strong land-sea interactions, that are strongly influenced by human activities. Microplastics (MPs) pollution in the Yellow River Delta (YRD) wetland, a typical young warm-temperate estuarine wetland, has not been comprehensively studied. The morphology, abundance, particle size, and polymer composition of MPs in the surface sediments of the YRD wetland were determined, and the pollution status and ecological risk in the study area were evaluated using the pollution load index (PLI) and potential pollution risk index (PRI). The results showed that the abundance of MPs in the YRD wetland was 20-520 n·kg -1, with a median value of 150 n·kg -1. The MPs were primarily fibers in shape and black in color, with particle size over 1 mm. The polymer components were primarily rayon, polyethylene, polyester, and polyethylene terephthalate. The PLI and PRI values of the MPs in the area were between 0.04-0.96 and 0.00-171.60, respectively, indicating that the pollution of MPs in the YRD wetland was at a slightly polluted level with low ecological risk. © 2023 Science Press. All rights reserved.
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页码：5046 / 5054
页数：8
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