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Dissolved organic matter derived from biodegradable microplastic promotes photo-aging of coexisting microplastics and alters microbial metabolism

Journal of Hazardous Materials 2022 70 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Peng Liu, Peng Liu, Chuanqi Xiao, Chuanqi Xiao, Chuanqi Xiao, Xuetao Guo Xuetao Guo Peng Liu, Chuanqi Xiao, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Peng Liu, Xuetao Guo Zhuozhi Ouyang, Peng Liu, Chuanqi Xiao, Peng Liu, Peng Liu, Zhuozhi Ouyang, Xuetao Guo Zhuozhi Ouyang, Peng Liu, Shuxing Li, Shuxing Li, Shuxing Li, Xuetao Guo Peng Liu, Zhuozhi Ouyang, Peng Liu, Peng Liu, Chuanqi Xiao, Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Peng Liu, Xuetao Guo Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Peng Liu, Jincheng Xue, Peng Liu, Peng Liu, Peng Liu, Jincheng Xue, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Jinmo Liao, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Zhuozhi Ouyang, Peng Liu, Xuetao Guo Jinmo Liao, Peng Liu, Xuetao Guo Chuanqi Xiao, Chuanqi Xiao, Chuanqi Xiao, Xuetao Guo Peng Liu, Peng Liu, Chuanqi Xiao, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Zhuozhi Ouyang, Zhuozhi Ouyang, Chuanqi Xiao, Chuanqi Xiao, Lingyan Zhu, Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Peng Liu, Lingyan Zhu, Lingyan Zhu, Zhuozhi Ouyang, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Xuetao Guo Chuanqi Xiao, Zhuozhi Ouyang, Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Zhuozhi Ouyang, Chuanqi Xiao, 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 Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Peng Liu, Peng Liu, Peng Liu, Peng Liu, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Zhuozhi Ouyang, Chuanqi Xiao, Hong Zhang, Hong Zhang, Hong Zhang, Chuanqi Xiao, Zhuozhi Ouyang, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Shuxing Li, Zhuozhi Ouyang, Xuetao Guo Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Xiaohan Li, Lingyan Zhu, Lingyan Zhu, Xuetao Guo Xuetao Guo Peng Liu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Peng Liu, Peng Liu, Lingyan Zhu, Lingyan Zhu, Lingyan Zhu, Peng Liu, Lingyan Zhu, Xuetao Guo Zhuozhi Ouyang, 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 Lingyan Zhu, Peng Liu, Lingyan Zhu, Xuetao Guo Xuetao Guo Lingyan Zhu, Xuetao Guo Xuetao Guo Shiwen Hu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Xuetao Guo Xuetao Guo Xuetao Guo Xuetao Guo Lingyan Zhu, Xuetao Guo

Summary

Dissolved organic matter leaching from two biodegradable microplastics (PBAT/PCL blends) was characterized, finding that it can promote photo-oxidation reactions in water by acting as a photosensitizer. The study raises concerns that biodegradable plastics, while designed to break down, generate chemically reactive leachate with potential environmental impacts.

Polymers

Dissolved organic matter (DOM) leaching from biodegradable microplastics (BMPs) and its characteristics and corresponding environmental implication are rarely investigated. In this study, the main component of DOM leachate from the two BMPs (polyadipate/butylene terephthalate (PBAT)/polycaprolactone (PCL)) was verified by using excitation-emission matrix-parallel factor analysis (EEM-PARAFAC). The PBAT-DOM (PBOM) was aromatized and terrestrial. Comparatively, PCL-DOM (PLOM) had low molecular weight. PBOM contained protein-like components while PLOM contained tryptophan and tyrosine components. Interestingly, both PBOM and PLOM could accelerate the decomposition and oxidation of coexisting polystyrene (PS) under light irradiation. Further, the difference in composition and the properties of BMPs-DOM significantly affected its photochemical activity. The high territoriality and protein-like component of PBOM significantly promoted the generation of O and O, which caused faster disruptions to the backbone of PS. Simultaneously, the microbial community's richness, diversity, and metabolism were obviously improved under the combined pressure of aged PS and BMPs-DOM. This study threw light on the overlooked contribution of DOM derived from BMPs in the aging process of NMPs and their impact on the microbial community and provided a promising strategy for better understanding of combined MPs' fate and environmental risk.

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