配方成分和辅助剂类型对difenoconazole可移动的叶片残留物的影响
Mohamed H Badawy1, Darragh Murnane1, Kathleen A Lewis1
1School of Life and Medical Sciences, University of Hertfordshire, Hatfield, Herts, UK.
概括
农药配方显著影响可移除叶残留物 (DFR),影响风险评估. 一种新的实验室方法揭示了配方类型和辅助剂改变了番茄和法式豆类等作物的DFR水平.
科学领域:
- 环境化学环境化学
- 农业科学 农业科学
- 毒理学 毒理学 毒理学
背景情况:
- 农药风险评估需要准确的可移动叶残留物 (DFR) 数据,以符合监管要求.
- 由于对影响因素的了解不足,DFR研究受到成本,季节性和监管机构不愿意推断数据的限制.
- 杀虫剂配方是可能影响DFR的关键因素,但其影响尚未得到充分描述.
研究的目的:
- 用一种新型实验室方法研究农药配方对可移除叶残留物 (DFR) 的影响.
- 评估不同的农药配方 (乳化缩剂与可湿粉) 和辅助剂如何影响各种作物的DFR.
主要方法:
- 使用了一种新的实验室DFR方法.
- 活性物质difenoconazole作为可乳化缩物 (EC 10%) 和可浸泡粉末 (WP 10%) 进行了测试.
- 对番茄,法式豆类和油菜进行了测试,有或没有辅助剂 (Tween 20,TEHP).
主要成果:
- 大多数作物的WP和EC配方中保留了可比的DFR百分比.
- 与EC (60%) 相比,西红与WP (39%) 的DFR%显着较低.
- 辅助剂的添加一般没有显著的影响,除了TEHP与EC在法国豆,减少DFR8%.
结论:
- 农药配方是影响DFR水平的一个重要因素.
- 开发的实验室DFR技术对于评估配方和辅助剂影响是有价值的.
- 调查结果有助于完善对农药暴露的风险评估和监管方法.
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