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聚乙烯纳米塑料在生菜-牛食物链中的质量基础的食物转移

Yanjun Li¹, Xiaolong Lin¹, Jian Wang²

¹Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China.

The Science of the total environment

|July 8, 2023

概括

纳米塑料 (NP) 从水转移到植物,然后转移到牛,尽管生物稀释,但影响了牛的生长. 这项研究强调了纳米塑料在食物链和陆地生态系统中的风险.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
食物网络动力学食物网络动力学

背景情况:

纳米塑料 (NP) 是新兴的环境污染物.
了解NP通过食物链的转移对于风险评估至关重要.

研究的目的:

研究聚乙烯 (PS) 纳米塑料从水中转移到植物,然后转移到牛的食物.
评估PS-NP对植物生长和牛健康的影响.

主要方法:

菜植物在60天内暴露在不同度的PS-NP (0.11000毫克/升) 中.
菜芽被食了牛27天.
热解气体染色学-质谱学被用于量化PS-NP.

主要成果:

在所有测试度中,在菜根和芽中检测到PS-NP.
在高PS-NP度下,植物生物量减少 (例如,在1000mg/L下减少36.1%的树枝生物量).
转移到牛的PS-NP,主要在便中发现 (>75%),在软组织中积累最小 (28ng/g在1000mg/L暴露时).
尽管有生物稀释,但牛的生长被显著抑制.

结论:

纳米塑料可以从水中转移到植物中,然后转移到更高的食物层.
虽然发生生物稀释,但纳米塑料对更高的营养水平的生物构成重大风险.
这项研究为评估纳米塑料在陆地生态系统中的生态风险提供了关键数据.

关键词:

生物分布生物分布食物链中的食物链.菜菜是一种蔬菜.纳米塑料是一种纳米塑料.一个牛牛牛.

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