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Microplastic pollution in typical seasonal rivers in northern China: temporal variation and risk assessment

Environmental Science Processes & Impacts 2023 5 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 35 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Mufan Gan, Mufan Gan, Mufan Gan, Mufan Gan, Mufan Gan, Mufan Gan, Mufan Gan, Mufan Gan, Peng Shi, Yan Zhang, Lingzhou Cui, Lingzhou Cui, Mufan Gan, Mufan Gan, Peng Shi, Lingzhou Cui, Lingzhou Cui, Lingzhou Cui, Lingzhou Cui, Lingzhou Cui, Lingzhou Cui, Haotian Sun, Haotian Sun, Lingzhou Cui, Haotian Sun

Summary

Researchers quantified microplastic abundance and composition in surface water of the Wei River across dry and wet seasons, finding significantly higher MP concentrations in the dry season with polypropylene and polyethylene fibers dominating, and conducted polymer-level risk assessment using FTIR and Raman spectroscopy.

Polymers

PE PP

Study Type Environmental

Rivers are important channels for the transport of microplastics (MPs) from land to sea. In this work, the temporal variation and risk assessment of MP pollution in the surface water of the Wei River, a typical seasonal river in northern China, were quantified. The number abundance of MPs in the dry season was significantly higher than that in the wet season (<i>p</i> < 0.05). Fiber was the most abundant type of MP in both dry and wet seasons. Infrared spectrometer and Raman spectroscopy identification showed that polypropylene (PP) and polyethylene (PE) were the major polymers found in both dry and wet seasons, and the mixture of different MP polymers was more diverse in the dry season. The risk assessment showed that the average pollution load index (PLI) and risk quotient (RQ) were 2.10 and 1.19 in the dry season, which significantly decreased to 1.25 and 0.74, respectively, in the wet season (<i>p</i> < 0.05). In total, the results from this study highlight the characteristics of seasonal rivers that influence the temporal distribution and risk assessment of microplastics, providing scientific reference for policymakers and river managers to effectively deal with MP pollution.

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