Microcystis aeruginosa对聚烯微塑料的反应:生长动态和对水处理的影响
Decai Liu1, Zhiyong Zhang2, Lei Xu1
1Xiamen Key Laboratory of Municipal and Industrial Solid Waste Utilization and Pollution Control, College of Civil Engineering, Huaqiao University, Xiamen, Fujian 361021, PR China.
Journal of hazardous materials
|May 23, 2025
概括
聚乙烯微塑料最初抑制,然后促进蓝藻细菌的生长. 它们增加藻类有机物质和微囊素,影响水质和消毒副产品.
科学领域:
- 环境科学 环境科学
- 水生毒理学 水生毒理学
- 微生物学 微生物学
背景情况:
- 微塑料 (MP) 正在水生环境中积累,但它们对蓝藻细菌繁殖的影响尚不清楚.
- 蓝藻细菌,如Microcystis aeruginosa,形成有害的花,影响水质.
- 聚钢 (PS) 是一种常见的微塑料污染物.
研究的目的:
- 研究聚烯微塑料对Microcystis aeruginosa生长和生理学的动态影响.
- 评估微塑料对藻类有机物和消毒副产品形成的影响.
- 为了评估微塑料对氧化应激和菌中毒素产生的影响.
主要方法:
- 在Microcystis aeruginosa的整个生长周期中暴露于聚烯微塑料.
- 测量藻类细胞生长,植物蛋白含量和细胞外有机物质.
- 在化过程中三甲 (THM) 形成的分析.
- 评估活性氧物种 (ROS),抗氧化能力和酶活性.
- 微囊素含量的量定量.
主要成果:
- 聚烯最初抑制了Microcystis aeruginosa的生长和核糖蛋白含量,但后来促进了它.
- 在化过程中,PS暴露增加了细胞外有机物,并增强了THM的形成.
- 在藻类细胞中,PS降低了ROS水平和抗氧化能力.
- 暴露于PS的藻类中的微囊素含量显著增加.
结论:
- 像PS这样的微塑料对蓝菌产生复杂的,时间依赖的影响.
- 的存在加剧了水质问题,增加了藻类的有机物质和微囊素水平.
- 微塑料对淡水生态系统和饮用水处理过程构成潜在风险.
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