在具有不同特性的土壤中出除草剂:从商业配方和分析标准的角度来看
Rita de Cássia Araújo de Medeiros1, Tatiane Severo Silva2, Taliane Maria da Silva Teófilo1
1Department of Agronomic and Forestry Sciences, Plant Science Center, Universidade Federal Rural do Semi-Árido-UFERSA, Av. Francisco Mota, 572, Costa e Silva, P.O. Box 137, Mossoró 59625-900, RN, Brazil.
Toxics
|March 27, 2024
概括
含有添加剂的商业除草剂配方比分析标准更容易浸出土壤. 这影响了除草控制效率,并增加了潜在的环境污染风险.
科学领域:
- 环境化学环境化学
- 土壤科学 土壤科学
- 农业学是一种农业学.
背景情况:
- 除草剂的漏对于除草控制至关重要,但会造成地下水污染的风险.
- 了解土壤中的除草剂流动性对于环境保护和有效应用至关重要.
研究的目的:
- 为了比较商业除草剂配方与其分析标准的土壤浸行为.
- 研究配方添加剂对不同类型土壤中除草剂流动性的影响.
主要方法:
- 使用三种不同的土壤类型进行了漏实验.
- 双,六和硫甲基除草剂被单独和混合测试.
- 使用超高性能液态色谱学与质谱仪 (LC-MS/MS) 结合,量化了除草剂残留物.
主要成果:
- 迪乌龙表现出较低的移动性,留在表面的土壤层中.
- 赫萨津和硫甲基显示出更大的流动性,浸出到更深层的土壤层中.
- 与所有测试的除草剂和混合物的分析标准相比,商业配方显示出增强的浸出.
结论:
- 配方添加剂显著影响除草剂的浸出,增加土壤的流动性.
- 有效的除草剂现场定位需要考虑配方特定的漏特性.
- 尽量减少环境污染,需要了解这些添加剂驱动的漂水效应.
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