微塑料和纳米塑料生态毒性测试的暴露协议
Fazel Abdolahpur Monikh1,2,3, Anders Baun4, Nanna B Hartmann4
1Department of Chemical Sciences, University of Padua, Padua, Italy. fazel.monikh@unipd.it.
Nature protocols
|October 10, 2023
概括
一个新的协议通过模仿自然粒子的特性和行为来解决微型和纳米塑料 (MNP) 生态毒性测试的问题. 这种方法增强了对这些持久污染物的环境风险评估.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 材料科学 材料科学 材料科学
背景情况:
- 微型和纳米塑料 (MNP) 引发了越来越多的环境问题,但缺乏标准化的生态毒性测试协议.
- 目前的方法经常使用简化的球形粒子和基于化学的协议,无法考虑MNP在暴露系统中的可变性和动态行为.
- 基不溶解,并表现出由其特性和环境条件 (如pH,离子强度) 影响的复杂行为.
研究的目的:
- 开发和描述微型和纳米塑料 (MNP) 生态毒性测试的协调暴露协议.
- 创建一个协议,考虑现实的MNP属性 (形状,大小,组成) 和它们在曝光介质中的动态行为.
- 适应现有的化学测试生态毒性指南,以具体解决土壤和水生环境中的MNP.
主要方法:
- 程序1:自上而下生产现实的MNP和全面的颗粒特征 (例如,使用热提取脱气色谱/质谱).
- 程序2:开发用于短期和长期土壤生物毒性测试的暴露系统,修改现有的化学生态毒性指南.
- 程序3:开发短期和长期水生生物毒性测试的暴露系统,适应MNP的化学生态毒性指南.
主要成果:
- 为MNP生态毒性测试建立了一个新的,可适应的协议,考虑粒子特异性和动态行为.
- 该协议包括生产代表性MNP和表征它们的方法,以及对土壤和水生生物的修改测试程序.
- 成功应用的例子包括测试MNP毒性在海洋,淡水,,虫.
结论:
- 开发的协议为MNP生态毒性测试提供了标准化的方法,提高了环境风险评估的可靠性.
- 该方法通过结合现实的MNP特征和行为来解决当前协议的局限性.
- 该协议具有多功能性,适用于各种生物和暴露时间 (24小时至2个月),适用于研究人员,风险评估人员和行业专业人士.
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