传统和可生物降解的微塑料与类农药的相互作用
Kang Wang1, Cheng Li2, Haifeng Li2
1School of Environmental Studies & MOE Key Laboratory of Groundwater Quality and Health, China University of Geosciences, Wuhan 430078, China; Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture & Forestry Sciences, Beijing 100095, China.
The Science of the total environment
|July 7, 2024
概括
微塑料 (MPs) 和新烟类农药 (NNPs) 在土壤中相互作用,MPs增加了NNP的生物可用性并抑制了降解. 这项研究阐明了它们的综合污染影响.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 聚合物科学 聚合物科学
背景情况:
- 新类杀虫剂 (NNP) 和微塑料 (MP) 是普遍存在的农业污染物.
- 人们对MP,特别是可生物降解塑料和NNP之间的相互作用仍然不太了解.
研究的目的:
- 在各种MP上研究NNP thiacloprid (THI) 的吸附-脱吸动力学.
- 分析影响MPsTHI吸附的因素.
- 评估MPs对NNP生物可用性和土壤降解的影响.
主要方法:
- 使用传统和可生物降解的MP与 thiacloprid 的吸附-脱落实验.
- 对pH,盐度和溶解有机物等因素的分析.
- 薄膜扩散梯度 (DGT) 装置用于评估在土壤中的生物利用性.
主要成果:
- 聚胺6的THI吸附能力 (96.49 μg g−1) 比聚 (丁烯基酸盐共甲) (88.78 μg g−1) 高.
- 由于增强的表面积和可湿性,MP老化增加了THI吸附 (5.53%-15.8%).
- 国会议员增加了THI在土壤中的生物可用性,并减少了其降解,在模拟的肠液中产生了更高的溶解.
结论:
- 微塑料在农业环境中极大地影响了类农药的命运和运输.
- 众议员和NNP的联合存在构成了复杂的环境风险,需要进一步调查它们的协同效应.
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