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

护根物 微塑料 聚乙烯 地膜覆盖 塑料薄膜 环境科学 材料科学 环境化学 化学 农学 复合材料 生物 图层(电子)
作者
Yang Yang,Zhen Li,Changrong Yan,D. R. Chadwick,Davey L. Jones,Enke Liu,Qin Liu,Runhao Bai,Wenqing He
出处
期刊:Science of The Total Environment [Elsevier]
卷期号:814: 152572-152572 被引量:121
标识
DOI:10.1016/j.scitotenv.2021.152572
摘要

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/m2, the average quantity of microplastics released from biodegradable, oxodegradable, and white and black non-degradable mulch films were 475, 266, 163, 147 particles/cm2, 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.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
2秒前
猛犸象冲冲冲完成签到,获得积分10
2秒前
优雅语兰发布了新的文献求助10
2秒前
2秒前
独特尔丝发布了新的文献求助10
2秒前
2秒前
2秒前
醉翁完成签到,获得积分10
3秒前
浅尝离白应助默默纲采纳,获得30
3秒前
搬工的砖人完成签到,获得积分10
3秒前
Pluto发布了新的文献求助20
4秒前
共享精神应助木子李采纳,获得10
4秒前
4秒前
5秒前
一丢丢完成签到,获得积分10
5秒前
6秒前
上官若男应助优雅语兰采纳,获得10
7秒前
大模型应助讨厌下雨采纳,获得10
7秒前
科研完成签到,获得积分10
7秒前
勤奋花瓣发布了新的文献求助10
7秒前
8秒前
袁奇点发布了新的文献求助10
8秒前
852应助淡淡菠萝采纳,获得10
9秒前
害怕的冬灵完成签到,获得积分10
9秒前
10秒前
cookieMichael发布了新的文献求助10
10秒前
11秒前
13秒前
13秒前
zhuo完成签到,获得积分10
14秒前
大大小小发布了新的文献求助10
14秒前
jhc完成签到,获得积分10
14秒前
和谐鸭子完成签到,获得积分10
15秒前
shencheng发布了新的文献求助10
16秒前
jhc发布了新的文献求助10
17秒前
琛哥物理发布了新的文献求助10
17秒前
18秒前
Yi发布了新的文献求助10
18秒前
浅尝离白应助默默纲采纳,获得30
19秒前
高分求助中
The Oxford Handbook of Social Cognition (Second Edition, 2024) 1050
Kinetics of the Esterification Between 2-[(4-hydroxybutoxy)carbonyl] Benzoic Acid with 1,4-Butanediol: Tetrabutyl Orthotitanate as Catalyst 1000
The Young builders of New china : the visit of the delegation of the WFDY to the Chinese People's Republic 1000
юрские динозавры восточного забайкалья 800
English Wealden Fossils 700
Chen Hansheng: China’s Last Romantic Revolutionary 500
Mantiden: Faszinierende Lauerjäger Faszinierende Lauerjäger 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3140698
求助须知:如何正确求助?哪些是违规求助? 2791571
关于积分的说明 7799545
捐赠科研通 2447907
什么是DOI,文献DOI怎么找? 1302182
科研通“疑难数据库(出版商)”最低求助积分说明 626459
版权声明 601194