威尔格罗®Cu+Zn对环境的危害:一种纳米化肥
Susana I L Gomes1, Sekerani B Chidiamassamba1, Tito Trindade2
1Department of Biology & CESAM, University of Aveiro, 3810-193, Aveiro, Portugal.
Environmental pollution (Barking, Essex : 1987)
|August 30, 2023
概括
像WELGRO®这样的纳米肥料对土壤的毒性比其成分更高,影响繁殖和生存,特别是长期暴露. 对纳米农业化学品在精密农业中的环境风险评估至关重要.
科学领域:
- 环境毒理学环境毒理学
- 土壤科学 土壤科学
- 纳米技术在农业中的应用
背景情况:
- 纳米农业化学品提供精密农业的好处,但往往缺乏环境风险评估.
- 商业纳米肥料,如WELGRO® Cu + Zn,越来越多地用于农业.
- 了解纳米农业化学品对土壤无脊椎动物的生态毒性对于可持续实践至关重要.
研究的目的:
- 为了评估商业纳米肥WELGRO® Cu + Zn对土壤无脊椎动物Enchytraeus crypticus的生态毒性.
- 为了比较WELGRO®对其单个活性物质CuO和ZnO的毒性.
- 评估WELGRO®在各种暴露时间和生命阶段的影响.
主要方法:
- 使用LUFA 2.2土壤对Enchytraeus crypticus进行生态毒性测试.
- 进行了四项关键测试:回避行为 (2天),繁殖 (28天),延伸 (56天) 和完整生命周期 (46天).
- 与WELGRO®单个成分 (CuO + ZnO) 混合物的效果的比较.
主要成果:
- 威尔格罗®表现出纳米特征和比CuO和ZnO混合物更高的毒性.
- Enchytraeus crypticus对WELGRO®和CuO + ZnO表现出回避行为,表明其高度敏感.
- 虽然短期测试显示毒性低,但长期暴露 (56天) 显示了WELGRO®的显著毒性,可能是由于纳米粒子缓慢释放离子.
- 整个生命周期测试确定了化和幼存活是WELGRO®影响的最敏感的生命阶段.
结论:
- 在推的野外应用速度下,纳米启用的WELGRO®可以对类动物群体产生负面影响.
- 立即避开行为和长期暴露效应都会导致纳米肥料的生态毒性.
- 包括长期和全生命周期测试在内的全面危险选对于准确的纳米农业化学风险评估至关重要.
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