塑料添加剂对水生环境的生态毒性影响因素:生命周期影响评估的新方法
Naiara Casagrande1, Carla O Silva1, Francesca Verones2
1MARE - Marine and Environmental Sciences Centre | ARNET - Aquatic Research Network Associate Laboratory, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.
Environmental pollution (Barking, Essex : 1987)
|November 17, 2023
概括
塑料添加剂入水生环境,损害野生动物. 这项研究量化了它们的毒性,开发了影响因素,以评估塑料污染对水生物种的影响,并为可持续政策提供信息.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 海洋生物学 海洋生物学
背景情况:
- 塑料添加剂入水生环境,对水生生物群构成风险.
- 现有的生命周期评估缺乏全面的塑料添加剂毒性模型.
- 新兴研究强调了对这些影响的定量评估的必要性.
研究的目的:
- 根据生态毒理学数据,开发和计算75种塑料添加剂的效应因子.
- 将急性和慢性毒性数据协调为标准化慢性值.
- 推进评估塑料添加剂在水生生态系统中的毒性.
主要方法:
- 从文献中编制了461个生态毒理学数据点,涵盖9个族群的75个物种.
- 采用外推因子的协调性毒性终点 (例如有效度,致命度).
- 为单个化学品,类别和通用组计算了25个不同的效应因子.
主要成果:
- 针对75种塑料添加剂计算了效应因子,包括基和基等类别.
- 潜在受影响分数 (PAF) 的值有显著的变化,从20.69 PAF·m3·kg−1对于乙烯甲酸到11081.85 PAF·m3·kg−1对于4-Nonylphenol.
- 开发了一个通用效应因子,包括404个数据点,用于更广泛的评估.
结论:
- 计算的效应因子对于导出塑料添加剂毒性特征因子至关重要.
- 这项研究为决策者和塑料添加剂政策制定提供了必要的数据.
- 推进塑料添加剂影响的评估有助于塑料价值链更加可持续.
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