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根据土壤类型,AgNM300K的毒性可以通过虫的内部度来预测

Janeck J Scott-Fordsmand¹, Jennifer Mariyadas¹, Mónica Jb Amorim²

¹Department of Ecoscience, Aarhus University, C.F. Møllers Alle 4, Building 1120, DK-8000, Aarhus, Denmark.

|August 15, 2024

概括

土壤的特性显著影响了中银纳米粒子的毒性. 阴离子交换能力 (CEC) 最好预测各种土壤类型的内部银含量和毒性,而不是土壤溶液度.

科学领域:

环境毒理学环境毒理学
纳米毒理学研究
土壤科学土壤科学

背景情况:

纳米颗粒与土壤成分的相互作用在纳米毒理学中构成了持续的挑战.
了解不同土壤类型的纳米颗粒生物利用率和毒性对于风险评估至关重要.

研究的目的:

为了比较银纳米颗粒 (AgNM300K) 在四种不同的土壤类型中的地 (Eisenia fetida) 上的毒性.
为了确定总量,土壤溶液或虫组织中的银度是否最好地预测毒性.
调查土壤特性对银纳米粒子毒性和生物积累的影响.

主要方法:

土虫 (Eisenia fetida) 暴露于AgNM300K的时间为56天.
评估的终点包括生存,繁殖和生物积累.
在土壤,土壤溶液和组织中测量了银度 (离子和纳米粒子).
使用了四种土壤类型 (OECD,LUFA 2.2,Hygum,RefSol 01A),有不同的有机物质,粘土和阴离子交换能力 (CEC).

主要成果:

虫毒性高度依赖于土壤类型,与有机物,粘土含量和CEC密切相关.
阴离子交换能力 (CEC) 与土壤内部银度的最佳相关性.
土壤溶液中的银度在测试的土壤中没有产生有用的毒性预测.

结论:

土壤特性,特别是CEC,是银纳米颗粒生物可用性和对的毒性至关重要的决定因素.
与CEC相关的内部银度比土壤溶液度更好地预测毒性.
未来的纳米毒理风险评估应考虑影响纳米粒子相互作用和吸收的土壤特征.

关键词:

建模模型建模模型土壤的特性土壤的特性毒性预测毒性预测

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