混合物预测表面活性剂和抗生素的无效度:基于实验测试的建模
Zi-Yi Zheng1, Jing-Xuan Zhou1, Xiong-Bo Liu1
1School of Urban Planning and Design, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
概括
抗生素和表面活性剂混合时会造成生态风险. 这项研究发现基诺隆抗生素和Triton X-100混合物的协同毒性对水生生物产生预测无效度 (PNEC).
科学领域:
- 环境化学
- 生态毒理学
- 水生毒理学
背景情况:
- 抗生素和表面活性剂在水生环境中同时存在,造成生态风险.
- 已知个体毒性,但组合效应和混合物预测无效度 (PNEC) 尚未研究.
研究的目的:
- 调查类抗生素 (利沃素,恩洛素) 和非离子表面活性剂 (Triton X-100) 的联合毒性.
- 评估混合物的毒性相互作用,并估计混合物的PNEC对于这些同时出现的污染物.
主要方法:
- 对大的急性毒性测试.
- 对毒性相互作用的度添加和独立作用模型的应用.
- 使用物种间相关性估计 (ICE) 和物种敏感性分布 (SSD) 模型进行PNEC估计.
主要成果:
- 在抗生素和Triton X-100的二元混合物中观察到协同毒性作用.
- 混合物PNEC具有显著的差异 (高达24. 7%),混合率不同.
- 对于Triton X- 100- LEV,PNEC范围为260. 73325. 23μg/ L,而对于Triton X- 100- ENR则为247. 85284. 57μg/ L.
结论:
- 抗生素和表面活性剂的联合作用对于准确的生态风险评估至关重要.
- 忽视混合物的毒性可能导致低估环境风险.
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