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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Sign in to save

Kinetics of microplastic generation from different types of mulch films in agricultural soil

The Science of The Total Environment 2021 221 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 50 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Yang Yang, Runhao Bai, Davey L. Jones Zhen Li, Zhen Li, Zhen Li, Zhen Li, Zhen Li, Yang Yang, Runhao Bai, Yang Yang, Yang Yang, Runhao Bai, Runhao Bai, Runhao Bai, Runhao Bai, Runhao Bai, Yang Yang, Yang Yang, Zhen Li, Zhen Li, Zhen Li, Zhen Li, Zhen Li, Davey L. Jones Davey L. Jones Zhen Li, Yang Yang, Yang Yang, Qin Liu, Davey L. Jones Runhao Bai, Changrong Yan, Changrong Yan, Changrong Yan, Zhen Li, Zhen Li, Runhao Bai, Qin Liu, Yang Yang, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Changrong Yan, Changrong Yan, Changrong Yan, Davey L. Jones D. R. Chadwick, Changrong Yan, Changrong Yan, Davey L. Jones Changrong Yan, Davey L. Jones Changrong Yan, Davey L. Jones Davey L. Jones Davey L. Jones Runhao Bai, Qin Liu, Qin Liu, Wenqing He, Wenqing He, Wenqing He, Wenqing He, Wenqing He, Wenqing He, Zhen Li, D. R. Chadwick, Changrong Yan, Changrong Yan, Changrong Yan, Changrong Yan, D. R. Chadwick, D. R. Chadwick, Changrong Yan, Wenqing He, Wenqing He, Zhen Li, Davey L. Jones Davey L. Jones Davey L. Jones Changrong Yan, Changrong Yan, Qin Liu, Davey L. Jones Zhen Li, Changrong Yan, Changrong Yan, Yang Yang, Enke Liu, Changrong Yan, Davey L. Jones Changrong Yan, Changrong Yan, Changrong Yan, Changrong Yan, Changrong Yan, Enke Liu, Zhen Li, Davey L. Jones Davey L. Jones Davey L. Jones Changrong Yan, Zhen Li, Changrong Yan, Changrong Yan, Changrong Yan, Davey L. Jones Changrong Yan, Changrong Yan, Yang Yang, Yang Yang, Yang Yang, Davey L. Jones Changrong Yan, Changrong Yan, Qin Liu, Davey L. Jones Changrong Yan, D. R. Chadwick, Wenqing He, Changrong Yan, D. R. Chadwick, Changrong Yan, Changrong Yan, Davey L. Jones Qin Liu, Davey L. Jones Qin Liu, Yang Yang, Changrong Yan, Changrong Yan, Davey L. Jones Davey L. Jones Zhen Li, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Yang Yang, Davey L. Jones Wenqing He, Changrong Yan, Changrong Yan, Yang Yang, Davey L. Jones Davey L. Jones Changrong Yan, Changrong Yan, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Changrong Yan, Davey L. Jones Davey L. Jones Runhao Bai, Davey L. Jones Yang Yang, Yang Yang, Yang Yang, Yang Yang, Wenqing He, Wenqing He, Changrong Yan, Changrong Yan, Changrong Yan, Changrong Yan, Davey L. Jones Changrong Yan, Davey L. Jones Changrong Yan, Davey L. Jones Yang Yang, Changrong Yan, Davey L. Jones Wenqing He, Wenqing He, Changrong Yan, Qin Liu, Wenqing He, Wenqing He, Wenqing He, Davey L. Jones Enke Liu, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones Zhen Li, Davey L. Jones Davey L. Jones Davey L. Jones Enke Liu, Davey L. Jones Changrong Yan, Changrong Yan, Davey L. Jones Davey L. Jones Davey L. Jones Davey L. Jones

Summary

Researchers investigated the kinetics of microplastic generation from different mulch films in agricultural soil, finding that weathering rates and microplastic formation patterns varied significantly between oxodegradable, biodegradable, and conventional plastic films.

Polymers
PE

Upon environmental weathering, plastic materials form smaller sized microplastics, of which the contamination in agricultural fields is of significant importance and increasing social concern. Plastic mulch films are considered a major source of agricultural soil microplastic pollution. However, the mechanism and kinetics of microplastic formation from plastic mulch films were rarely understood. In this study, the rate of microplastic generation from typical mulch films, such as oxodegradable, biodegradable, and conventional non-degradable (polyethylene, PE) mulch films, were quantified in soil under simulated UV irradiation. Results showed that microplastic formation was more rapid from biodegradable mulch film, followed sequentially by oxodegradable mulch film, white PE mulch film, and black PE mulch film. The kinetics of microplastic generation strictly followed the Schwarzchild's law, with exponential growth at indexes between 1.6309 and 2.0502 in the microplastic generation model. At a cumulative UV irradiation of 2.1 MJ/m, the average quantity of microplastics released from biodegradable, oxodegradable, and white and black non-degradable mulch films were 475, 266, 163, 147 particles/cm, respectively; with particle sizes largely distributed within 0.02-0.10 mm range. Concurrent increase in crystallinity and surface erosion of the mulch films were observed upon UV irradiation, which further determined the accessibility and activity of the materials to photo-oxidation (reflected as HI indexes), therefore played a critical role on the quantity and size ranges of microplastic debris.

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