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微素-LR对Hydrocharis dubia (Bl.) 模拟饮用水源的净化效率的影响支持者支持者支持者

Junfei Liu¹, Yingbo Dong², Hai Lin²

¹School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Beijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants, Beijing, 100083, China; Shunde Innovation School, University of Science and Technology Beijing, Shunde, 528399, China.

Toxicon : official journal of the International Society on Toxinology

|February 18, 2024

概括

低度的微囊素-LR (MC-LR) 可以通过促进根生长和酶活性来增强水生植物对饮用水的净化. 然而,较高的MC-LR水平抑制了污染物去除,表明度依赖的效应.

科学领域:

环境科学环境科学
水生生态学水生生态学
水处理技术水处理技术

背景情况:

饮用水安全对公共健康至关重要.
微囊素-LR (MC-LR) 是一种藻类毒素,会污染水源,并可能阻碍水生植物的修复.
了解MC-LR对水生植物的影响是优化净水的关键.

研究的目的:

研究MC-LR在使用Hydrocharis dubia (Bl.) 净化饮用水中的性能和机制. 支持者.支持者.
为了确定MC-LR度的变化对污染物去除和植物生理学的影响.

主要方法:

评估了Hydrocharis dubia暴露于不同MC-LR度的NH4+-N,TP和COD的去除效率.
根形态的量化变化 (长度,尖端,表面积,直径) 和叶绿素含量.
测量了抗氧化酶 (POD,CAT) 和脂质过氧化标记物 (MDA) 的活性.

主要成果:

在0.5μg L−1 MC-LR时,达到90.7% (NH4+-N),93.2% (TP) 和77.3% (COD) 的最佳去除效率.
低的MC-LR度 (0.1μg L-1) 显著促进了根生长 (长度,尖端,表面积,直径) 和叶绿素含量.
MC-LR (<1.0μg L-1) 刺激了POD和CAT活动,但随着度的上升增加了MDA含量,表明度依赖的效应.

结论:

MC-LR通过双重机制影响Hydrocharis dubia的净化性能:在低剂量时促进植物生长和酶活性,但在更高度时抑制污染物去除.
这些发现突显了MC-LR在水生植物水处理系统中的复杂,依赖度的作用.

关键词:

水生植物水生植物.饮用水来源饮用水来源水虫 (Hydrocharis dubia) (蓝色) 是一个有趣的植物. 支持者支持者支持者微囊素LR-LR的使用情况植物疗法 (Phytoremediation) 是一种植物疗法.

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