Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Marine & Wildlife Sign in to save

Vertical microplastic distribution in sediments of Fuhe River estuary to Baiyangdian Wetland in Northern China

Chemosphere 2021 129 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 60 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Panyue Zhang Hongjie Wang, Zeyan Zhou, Panyue Zhang Hongjie Wang, Guangming Zhang, Guangming Zhang, Panyue Zhang Guangming Zhang, Guangming Zhang, Siqi Wang, Panyue Zhang Panyue Zhang Panyue Zhang Yajing Cai, Guangming Zhang, Yajing Cai, Panyue Zhang Yajing Cai, Hongjie Wang, Yajing Cai, Hongjie Wang, Hongjie Wang, Guangming Zhang, Panyue Zhang Panyue Zhang Hongjie Wang, Guangming Zhang, Guangming Zhang, Panyue Zhang

Summary

Researchers studied how microplastics are distributed at different depths in river sediments near a major wetland in northern China, where treated wastewater is a primary water source. They found that microplastic concentrations were highest in the top layer of sediment and decreased with depth, with polyethylene and polypropylene being the most common types. The spatial distribution was closely linked to nearby human activities, with more contaminated areas found near population centers.

Polymers

PE PP

Study Type Environmental

Microplastics exist widely in water environment. The microplastic distribution in sediments can better reflect the long-term microplastic pollution, especially the vertical distribution. However, the vertical microplastic distribution in sediments is diverse and unclear. This paper is the first study on vertical microplastic distribution in estuary sediment of Fuhe River, the main upstream river flowing to Baiyangdian Wetland in the northern China. The typical feature of Fuhe River is that the effluent of municipal wastewater treatment plants is its main water source. Microplastics in 15 sampling sites and different depths (0-50 cm) were examined. Results showed that the microplastic content decreased with the increase of sediment depth, and the highest content was 1049 ± 462 items/kg in the topmost sediment layer (0-5 cm). The particle size of microplastics was smaller in deeper sediment layers. The proportion of colored microplastics in deeper sediment layers was larger than that in shallower layers. Polyethylene (PE) and polypropylene (PP) were the main plastic polymer types in all sediment samples. The spatial distribution characteristics of microplastics in sediments were closely related to human activities, and the microplastic content was higher in the areas with more intense human activities. This study is helpful to understand the detailed distribution characteristics of microplastics in typical rivers in the northern China, and can provide guidance for reducing microplastic pollution.

Read via DOI PubMed

Share this paper

Post Share Share Pin Email