Effects of Co-Existing Microplastics on Adsorption–Desorption Behavior of Perfluorooctanoic Acid in Soil: Co-Sorption and Mechanism Insight

IF 4.1 2区农林科学 Q1 AGRONOMY

Agronomy-Basel Pub Date : 2025-12-05 DOI:10.3390/agronomy15122802

Wei Zhao, Guilan Chen, Jing Jiao, Zhihai Liu, Yuanming Zhou, Guocheng Liu, Chengzhi Zhou, Qinghua Yan, Shuaishuai Xin, Yanjun Xin, Qianwen Wang

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引用次数: 0

Abstract

Microplastics (MPs) and perfluorooctanoic acid (PFOA) are ubiquitously present in agroecosystems, which can cause varying degrees of environmental damage. This study reports the investigation of the effect of MPs on PFOA adsorption by soil. A comprehensive analysis was performed on the adsorption–desorption dynamics of PFOA by MPs and soil under different conditions. The surface morphology of MPs and their interaction with PFOA were characterized. Irregularly shaped MPs facilitated accurate simulation of real-world conditions, influencing the adsorption quantity of PFOA in soil. Additionally, the peak intensity of various preadsorption and post-adsorption MP functional groups was altered, indicating that MPs augmented PFOA adsorption. The kinetics of PFOA adsorption followed the quasi-second-order reaction, and the isotherm data aligned well with the Freundlich model. This study reveals the mechanism by which the co-sorption of PFOA and MPs in agroecosystems affects their respective environmental behaviors, providing basic research data for the control of pollutants in agroecosystem soil.

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共存微塑料对土壤中全氟辛酸吸附-解吸行为的影响：共吸附及机理研究

微塑料（MPs）和全氟辛酸（PFOA）在农业生态系统中无处不在，可造成不同程度的环境破坏。本研究报道了多磺酸粘多糖对土壤吸附PFOA的影响。对不同条件下MPs和土壤对PFOA的吸附-解吸动力学进行了综合分析。表征了MPs的表面形貌及其与PFOA的相互作用。不规则形状的MPs有助于准确模拟现实条件，影响土壤中PFOA的吸附量。此外，各种吸附前和吸附后的MP官能团的峰强度发生了变化，表明MPs增强了PFOA的吸附。PFOA吸附动力学遵循准二级反应，等温线数据符合Freundlich模型。本研究揭示了农业生态系统对PFOA和MPs的共吸附影响其环境行为的机制，为农业生态系统土壤污染物的控制提供了基础研究数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Agronomy-Basel Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

6.20

自引率

13.50%

发文量

2665

审稿时长

20.32 days

期刊介绍： Agronomy (ISSN 2073-4395) is an international and cross-disciplinary scholarly journal on agronomy and agroecology. It publishes reviews, regular research papers, communications and short notes, and there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and/or methodical details must be provided for research articles.