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Simulation of natural aging property of microplastics in Yangtze River water samples via a rooftop exposure protocol

The Science of The Total Environment 2021 55 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Xiaowei Wu, Yanqi Shi, Hanyu Wang, Yanqi Shi, Yanqi Shi, Yanqi Shi, Yanqi Shi, Yanqi Shi, Yanqi Shi, Peng Liu, Hanyu Wang, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Yanqi Shi, Yanqi Shi, Yanqi Shi, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Yanqi Shi, Xiaowei Wu, Yanqi Shi, Xiaowei Wu, Hexinyue Huang, Xiaowei Wu, Yanqi Shi, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Hexinyue Huang, Hexinyue Huang, Xiaowei Wu, Yanqi Shi, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Yanqi Shi, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Xiaowei Wu, Hanyu Wang, Hanyu Wang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Yanqi Shi, Hanyu Wang, Hanyu Wang, Yanqi Shi, Hanyu Wang, Hanyu Wang, Shixiang Gao Hanyu Wang, Xiaowei Wu, Hanyu Wang, Hanyu Wang, Hanyu Wang, Xiaowei Wu, Hanyu Wang, Hanyu Wang, Xiaowei Wu, Yanqi Shi, Hexinyue Huang, Hanyu Wang, Shixiang Gao, Hanyu Wang, Xiaowei Wu, Hanyu Wang, Hanyu Wang, Hanyu Wang, Hexinyue Huang, Hanyu Wang, Xiaowei Wu, Yanqi Shi, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Yanqi Shi, Yanqi Shi, Xiaowei Wu, Yanqi Shi, Yanqi Shi, Hexinyue Huang, Yanqi Shi, Hexinyue Huang, Xiaowei Wu, Yanqi Shi, Yanqi Shi, Hanyu Wang, Yanqi Shi, Hanyu Wang, Hanyu Wang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Hanyu Wang, Hexinyue Huang, Yanqi Shi, Hexinyue Huang, Shixiang Gao, Yanqi Shi, Shixiang Gao Hexinyue Huang, Shixiang Gao Yanqi Shi, Yanqi Shi, Yanqi Shi, Hexinyue Huang, Hexinyue Huang, Shixiang Gao Shixiang Gao Xiaowei Wu, Shixiang Gao Hanyu Wang, Hexinyue Huang, Hexinyue Huang, Hexinyue Huang, Shixiang Gao, Shixiang Gao, Shixiang Gao, Shixiang Gao, Yanqi Shi, Hanyu Wang, Yanqi Shi, Xiaowei Wu, Shixiang Gao, Shixiang Gao, Shixiang Gao, Shixiang Gao, Shixiang Gao, Shixiang Gao Shixiang Gao Xiaowei Wu, Shixiang Gao Shixiang Gao Shixiang Gao Shixiang Gao Shixiang Gao Shixiang Gao, Shixiang Gao, Shixiang Gao Shixiang Gao Xiaowei Wu, Yanqi Shi, Shixiang Gao, Yanqi Shi, Shixiang Gao Yanqi Shi, Yanqi Shi, Shixiang Gao, Shixiang Gao Shixiang Gao

Summary

Researchers simulated natural weathering of polypropylene, polyethylene, and polystyrene microplastics by exposing them outdoors in Yangtze River water for 18 months. They found that polypropylene aged fastest, showing rapid fragmentation and surface oxidation, while different polymers showed varied changes in their ability to adsorb metal ions. The study reveals that laboratory aging methods may not fully replicate the degradation and pollutant-binding behavior of microplastics under real environmental conditions.

Polymers

PE PP PS

Study Type Environmental

Due to low aging rate, the environmental behavior of naturally weathered microplastics (MPs) are not fully understood. Here, we systematically investigated the surface property and adsorption behavior of polypropylene (PP), polyethylene (PE) and polystyrene (PS) MPs during outdoor exposure in Yangtze River water for 18 months, and compared their difference from those in laboratory process. Results showed that compared to PE and PS MPs, PP underwent higher changes in surface aging properties such as rapid fragmentation and surface oxidation. Outdoor exposure exhibited different effects on adsorption property of MPs for metal ions, where adsorption capacities of PE and PS MPs for Co(II) were increased with aging degrees, while few change occurred on different aged PP MPs. As for Cr(VI), aging process further decreased the overall adsorption on PP, PE and PS MPs. The difference was mainly ascribed to the surface property (e.g. oxygen-containing groups and size) and the adhered biofilm and charged minerals. We further validated that similar types of oxidation products were formed between natural and laboratory aging of MPs, whereas the reaction order of these products, fragmentation rate and the change in adsorption property of aged MPs might be different in both processes. The findings provide essential information to assess real environmental behavior of MP samples.

Read via DOI PubMed

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