微塑料污染土壤如何干扰三种除草剂的吸附和脱附过程?
Maura Gabriela da Silva Brochado1, John Kennedy Ferreira Cardoso2, Alessandro da Costa Lima2
1Department of Agronomy, Federal University of Technology of Paraná, Santa Helena, Brazil.
Chemosphere
|July 29, 2025
概括
土壤中的微塑料改变了除草剂的行为,特别是S-甲基吸附,可能会影响杂草控制,增加农业系统中的环境污染风险.
科学领域:
- 环境化学环境化学
- 土壤科学 土壤科学
- 聚合物科学 聚合物科学
背景情况:
- 微塑料 (MP) 在农业土壤中越来越普遍.
- 议员可以影响农药等农化学品的环境命运.
- 了解MP与除草剂的相互作用对于土壤和环境管理至关重要.
研究的目的:
- 研究不同微塑料度对土壤中除草剂吸附和脱吸的影响.
- 为了评估在微塑料存在时的六氨酸,二氨酸和S-甲基的行为.
主要方法:
- 用微塑料修改了土壤样本,其度从0%到100% (w w−1).
- 使用批量平衡方法确定了吸附和脱附等温度.
- 使用高性能液态染色学 (HPLC) 分析了除草剂度.
主要成果:
- 微塑料显著改变了S-甲基甲的吸附,增加了它在土壤中的保留.
- 赫萨津和二龙的吸附和脱附在很大程度上不受微塑料存在的影响.
- 观察到的变化表明由于微塑料而改变了环境行为和某些除草剂的命运.
结论:
- 农业土壤中的微塑料污染可以改变除草剂的环境命运.
- 微塑料对除草剂的保留增加可能会影响除草剂的有效性,并增加污染风险.
- 需要进一步的研究才能充分理解对农业生态系统的影响.
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