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Photochemical transformation of microplastics-derived dissolved organic matter altered the photoaging of microplastics

Journal of Hazardous Materials 2025 2 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 48 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Ling Ding, Ling Ding, Ling Ding, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xuetao Guo Ling Ding, Ling Ding, Ling Ding, Xinran Qiu, Hao Chen, Hao Chen, Xuetao Guo Xinran Qiu, Xuetao Guo Ling Ding, Xuetao Guo Xuetao Guo Xuetao Guo Hao Chen, Xuetao Guo Ling Ding, Xuetao Guo Bin Zhang, Ling Ding, Ling Ding, Ling Ding, Hao Chen, Haiwen Zhang, Hao Chen, Haiwen Zhang, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Ling Ding, Ling Ding, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Bin Zhang, Xuetao Guo Hao Chen, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Hao Chen, Xuetao Guo Ling Ding, Xuetao Guo Xuetao Guo Xuetao Guo Xinran Qiu, Ling Ding, Bin Zhang, Xujun Liang, Bin Zhang, Guodong Zhang, Guodong Zhang, Xuetao Guo Xuetao Guo Hao Chen, Xujun Liang, Xinran Qiu, Xinran Qiu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xinran Qiu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Ling Ding, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xinran Qiu, Xuetao Guo Xujun Liang, Xinran Qiu, Xinran Qiu, Xuetao Guo Xinran Qiu, Xinran Qiu, Xuetao Guo Xujun Liang, Xuetao Guo Hao Chen, Ling Ding, Xuetao Guo Xujun Liang, Xujun Liang, Xinran Qiu, Bin Zhang, Xuetao Guo Xinran Qiu, Xuetao Guo Xujun Liang, Xuetao Guo Xujun Liang, Ling Ding, Xuetao Guo Xujun Liang, Xujun Liang, Xinran Qiu, Xujun Liang, Xuetao Guo Xujun Liang, Xuetao Guo Xuetao Guo Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo Xuetao Guo Xujun Liang, Xujun Liang, Xinran Qiu, Xuetao Guo Xinran Qiu, Xinran Qiu, Xuetao Guo Xujun Liang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xinran Qiu, Xujun Liang, Bin Zhang, Bin Zhang, Bin Zhang, Xinran Qiu, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xinran Qiu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xujun Liang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xinran Qiu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xujun Liang, Xuetao Guo Bin Zhang, Xuetao Guo Jing Wei, Xuetao Guo Xujun Liang, Xujun Liang, Xuetao Guo Xuetao Guo Xuetao Guo Xujun Liang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xujun Liang, Xujun Liang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xujun Liang, Xujun Liang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo

Summary

Researchers investigated how dissolved organic matter released from different microplastics (polystyrene, polyethylene, and biodegradable PBAT) affects the aging of polystyrene microplastics under UV irradiation, finding that PBAT-derived organic matter most strongly accelerated plastic photoaging.

Polymers

PE PS

Microplastics-derived dissolved organic matter (MPs-DOM), as a novel and non-negligible of DOM, significantly influences the photoaging of coexisting microplastics (MPs), but their interactions remain underexplored. In this study, we investigated the effects of different MPs-DOM (aromatic polystyrene DOM (PS-DOM), aliphatic polyethylene DOM (PE-DOM), and biodegradable poly(butylene adipate-co-terephthalate) DOM (PBAT-DOM)) on the aging behavior of PS-MPs and their transformations characteristics within 96 d of UVA irradiation. Result demonstrated that MPs-DOM notably accelerated the PS-MP aging (especially PBAT-DOM), and the aging rate was closely correlated with MP-DOM evolution. Notably, PS-MP exhibited significant and rapid increase in aging within the first 6 h, which was attributed to the presence of highly unsaturated and phenolic compounds in MPs-DOM that promote the generation of reactive oxygen species (ROS). Throughout this process, these compounds were transformed into the saturated and low-aromatic compounds via the carboxylic acid and dealkylation reactions. As the reaction proceeded, PS-DOM released from PS-MP gradually became the dominant component in MP-DOM. The highly unsaturated components of PS-DOM have higher ability to produce ROS, thereby further accelerating PS-MPs aging. These findings provide valuable insights into the interactions between MPs and MPs-DOM and contribute to a better understanding of their environmental implications and risks.

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