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料中的微塑料会影响大西洋鱼中持久素污染物的毒动力学

Kit Granby¹, Bina Bhattarai¹, Ninna Johannsen¹

¹Technical University of Denmark (DTU), National Food Institute, Henrik Dams Alle B201, 2800, Kgs. Lyngby, Denmark.

Environmental pollution (Barking, Essex : 1987)

|June 24, 2024

概括

携带持久性有机污染物 (POPs) 的微塑料 (MPs) 增加了鱼片中的POP积累. 尽管MP不被吸收,但它们会减缓污染物的净化,并增强特定POP的吸收.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
水生毒理学水生毒理学

背景情况:

微塑料 (MP) 是持久性有机污染物 (POP) 的公认载体.
MPs对水生生物中POP毒动学的影响仍然是活跃研究的领域.
了解鱼类中的污染物转移和积累对于食品安全和生态系统健康至关重要.

研究的目的:

研究微塑料 (MPs) 对大西洋鱼 (Salmo salar) 中持久性有机污染物 (POPs) 毒动学的影响.
为了比较当污染物被吸收到MP时,与仅在料中存在的污染物相比,POP积累,净化和同化效率.

主要方法:

在大西洋鱼身上进行了一项养实验,使用三种饮食:吸收到MP的污染物,初始MP和污染料的混合物,以及没有MP的污染物.
在鱼片中分析了POP度,并监测了净化率.
消除系数和同化效率被建模并与污染物的疏水性相关 (log K).

主要成果:

当养污染物被吸收到MP时,鱼片积累了显著更多的POP,尽管MP通过肠道没有被吸收.
鱼类消耗MP吸收污染物饮食时,几种POP的净化明显较慢.
与没有MP的饮食相比,MP吸收饮食 (54-89%) 的同化效率更高 (50-71%),分子重量更高的化同源的比例吸收更高.

结论:

微塑料充当了重要的载体,增强了POP的同化,降低了大西洋鱼的净化率.
固态污染物的疏水性强烈影响它们从料转移到鱼类,更多的脂性污染物显示出更高的吸收率.
MPs改变了POP的毒性动力学,导致生物积累增加,特别是某些化同源,对水生食物网有影响.

关键词:

大西洋三文鱼是大西洋三文鱼.微塑料是一种微塑料.在PFAS中,有很多方法.持久性有机污染物持久性有机污染物毒动力学毒动力学毒动力学

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