在植物修复过程中对和多化基物质的生态风险:对两代跨越生态关键石物种的案例研究
Diga Gang1, Huawei Jia2, He Ji1
1State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
The Science of the total environment
|July 27, 2024
概括
在水生植物和沉积物中积聚和多基物质 (PFAS),导致氧化应激并改变植物生物合成. 短链PFAS扩散到新一代植物,影响生态恢复.
科学领域:
- 环境化学环境化学
- 生态毒理学 生态毒理学
- 植物科学 植物科学
背景情况:
- 和多醇基物质 (PFAS) 是持久的环境污染物,对生态问题越来越关注.
- 了解PFAS在水生生态系统中的分布和影响对于生态恢复至关重要.
- 植物修复过程可能受到水-巨型植物-沉积物系统中PFAS污染的影响.
研究的目的:
- 调查PFAS在水-巨型植物-沉积物微观世界中的分布和生态毒理学影响.
- 评估PFAS对水生植物结构和功能的影响.
- 评估 PFAS 在水生植物生态恢复期间的潜在风险.
主要方法:
- 利用水-巨型植物-沉积物微观宇宙系统来研究PFAS分布.
- 在水,沉积物和水下植物中的量化PFAS (PFOA,PFPeA,PFBS).
- 评估了植物的氧化应激,氨酸生物合成途径和生物积累因子 (BAF).
- 在植物传播者 () 和沉积物微生物群落中分析PFAS.
主要成果:
- PFAS,特别是PFOA,主要积聚在沉积物和水下植物中.
- 在水柱中,PFPeA和PFBS的度较高.
- PFAS生物积累诱导了植物氧化应激和下调的关键氨酸生物合成中间体.
- 在鱼中检测到短链PFAS,这表明可能存在代际转移和人口层面的影响.
- PFAS增加了沉积物中的微生物物种丰富度,但没有显著改变社区结构.
结论:
- PFAS在水生系统中构成生态风险,影响植物健康和生态恢复.
- 在PFAS类型中,分布模式不同,这对生物可用性和植物吸收有影响.
- 将PFAS转移到新一代植物突出了长期的生态后果.
- 需要进一步的研究,以减轻污染水环境中的PFAS风险,并在植物修复工作期间.
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