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分析方法量化PS和PVC纳米塑料附着在活性污泥中的细菌及其对社区结构的影响

Fazel Abdolahpur Monikh¹, Nhung H A Nguyen², Mandar Bandekar³

¹Institute for Nanomaterials, Advanced Technologies, and Innovation, Technical University of Liberec Bendlova 1409/7, 460 01 Liberec, Czech Republic; Department of Chemical Sciences, University of Padua, via Marzolo 1 - 35131, Padova, Italy; Department of Experimental Limnology, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Zur alten Fischerhuette 2, 16775 Stechlin, Germany.

|May 31, 2024

概括

聚乙烯和聚乙烯化物纳米塑料附着在细菌上,聚乙烯的初始粘附性更强. 细菌的防御机制随着时间的推移减少了纳米塑料的附着,微生物群体对这些环境压力因素表现出了弹性.

科学领域:

环境科学环境科学
微生物学微生物学
材料科学材料科学材料科学

背景情况:

纳米塑料在各种环境中越来越普遍.
分析方法的局限性阻碍了对纳米塑料风险的理解,包括尺寸,化学成分和微生物相互作用.
研究纳米塑料-微生物相互作用对于环境风险评估至关重要.

研究的目的:

研究纳米塑料化学成分如何影响活性污泥中的细菌的相互作用.
在5天的时间内分析聚乙烯 (PS) 和聚乙烯 (PVC) 纳米塑料与细菌的附着动态.
评估细菌群落对纳米塑料暴露的抵御力.

主要方法:

应用适合目的的分析方法用于纳米塑料的表征.
活性污泥细菌暴露在PS和PVC纳米塑料中.
微观观察和社区结构分析 (α多样性,PCoA,PERMANOVA).

主要成果:

纳米塑料,特别是PS,在5天内附着在细菌上,PS的初始附着度高于PVC.
5天后观察到纳米塑料附着的显著减少,这表明细菌适应或防御.
尽管存在纳米塑料,但细菌社区结构仍然具有弹性,具有稳定的α多样性和社区组成.

结论:

纳米塑料的化学成分影响了最初的细菌附着.
细菌群体拥有防御机制,可以随着时间的推移减少纳米塑料粘附.
微生物群落表现出对纳米塑料压力因素的弹性,保持结构完整性.

关键词:

阿尔法多样性的多样性分析方法分析方法细菌社区的细菌社区化学组成化学组成粒子附着装置的附着装置废水是废水,废水就是废水.

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