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老化增加了轮胎磨损颗粒对微藻的颗粒和液诱导的毒性

Min Lv¹, Fanyu Meng², Mingsan Man¹

¹CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.

|April 28, 2024

概括

旧轮胎磨损颗粒 (TWPs) 对海洋微藻比原始TWPs更有毒,导致显著的生理和代谢变化. 衰老通过增强的添加剂释放增加了TWP毒性,影响藻类的健康和新陈代谢.

科学领域:

环境科学环境科学
海洋生物学海洋生物学
生态毒理学生态毒理学

背景情况:

轮胎磨损颗粒 (TWPs) 构成环境风险,但它们的毒性机制,特别是老旧的TWPs和海洋微藻,尚不清楚.
了解TWP毒性对于评估生态影响和制定减缓策略至关重要.

研究的目的:

研究海洋微藻Phaeodactylum tricornutum对处女和老TWPs,它们的液和液颗粒的生理和代谢反应.
阐明老化TWPs的毒性机制,重点关注表面形态和添加剂释放的变化.

主要方法:

暴露于不同度的TWPs (处女和老化) 和它们的液的Phaeodactylum tricornutum.
评估微藻生长,叶绿素含量,光合作用效率和氧化损害.
不定位的代谢学分析,以确定代谢变化.
对TWP表面形态和添加剂成分的分析.

主要成果:

TWPs表现出抑制作用,在低度促进生长,在高度抑制生长.
陈旧的TWPs比原始TWPs产生了更严重的生理影响 (生长抑制,减少叶绿素a,氧化损伤).
代谢学揭示了老年TWPs引起的更明显的代谢变化,与特定释放的添加剂相关.

结论:

衰老显著增加了TWPs对海洋微藻的毒性,影响了颗粒物和液的毒性.
从老化的TWPs中释放的关键添加剂被确定为微藻中代谢干扰的主要贡献者.
这些发现强调了在对海洋生态系统的环境风险评估中考虑TWP衰老的重要性.

关键词:

衰老过程的衰老过程.代谢学分析分析微藻类是一种微藻类.微塑料是一种微塑料.毒性机制有毒性机制

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