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Microplastics in Surface Waters and Sediments from Guangdong Coastal Areas, South China

Sustainability 2021 86 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Yizheng Li, Yindan Zhang, Guanglong Chen, Kaihang Xu, Han Gong, Kai Huang, Muting Yan, Jun Wang

Summary

Microplastics were detected in surface waters and sediments across coastal areas of Guangdong Province in South China, with higher concentrations near urban centers and river mouths reflecting the region's dense population and industrial activity.

Polymers
Study Type Environmental

Microplastic is an emerging global pollutant that have attracted a great deal of attention from researchers and the public. Guangdong Province has a large population and a relatively well-developed economy, but lacks a modern pollution control system. Guangdong has a long coastline with varying levels of pollution, and little research has been conducted on microplastics. Therefore, we investigated the level of microplastic pollution in coastal areas of Guangdong Province, and the abundance of microplastics in surface waters and sediments at 13 sampling sites. The abundance of microplastics in surface water and sediment samples ranged from 850 to 3500 items/L and 433.3 to 4166.3 items/kg, respectively. Fiber is the main type of microplastics in both surface water and sediment. The sampled microplastics were typically transparent. Raman results show that the surface water sample mainly includes rayon (38.2%), polyethylene terephthalate (16.4%), and ethylene/vinyl acetate copolymer (12.7%). This study used the pollution load index method to evaluate the pollution risk of microplastics along the coast of Guangdong, and provided the basis for the formulation of environmental policy.

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