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perfluorobutanoic 酸减弱了微塑料和微藻类的异质聚合:从物理化学性质,细胞外聚合物质分泌和DLVO理论的角度来看

Yue Li¹, Xiaoying Zheng¹, Zhilin Zhao¹

¹Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, PR China; College of Environment, Hohai University, Nanjing 210098, PR China.

The Science of the total environment

|October 26, 2024

概括

perfluorobutanoic 酸 (PFBA) 抑制了微藻和微塑料的异质聚合. 这种相互作用对于了解水生环境中的污染物去除和毒性至关重要,影响了微塑料去除和藻类健康.

科学领域:

环境科学环境科学
水生毒理学水生毒理学
材料科学材料科学材料科学

背景情况:

微塑料 (MPs) 和和多基物质 (PFAS) 是水生生态系统中普遍存在的共同污染物.
微藻可以通过与MP的异质聚合和污染物的吸附来促进污染物去除.
像PFAS这样的共同污染物对MP藻类异质聚合的影响仍然在很大程度上未被探索.

研究的目的:

研究 perfluorobutanoic acid (PFBA) 对微藻 (Chlorella sorokiniana) 和不同尺寸的聚烯微塑料 (PS) 之间的异构聚合的影响.
通过实验和理论方法阐明PFBA对MP藻类异质聚合的影响机制.

主要方法:

进行了结算实验,以量化异构聚合水平.
使用扫描电子显微镜 (SEM) 可视化相互作用.
德贾古恩-兰多-维维-奥弗比克 (DLVO) 理论被应用来建模相互作用能量.

主要成果:

与较大的PS (50微米) 相比,C. sorokiniana和较小的PS (3微米) 之间的异构聚合更为显著.
对于两种大小的PS,PFBA显著抑制了异构聚合过程.
PFBA减少了细胞外聚合物 (EPS) 的产生,并改变了EPS中的蛋白质/多糖合物比率,阻碍了聚合.

结论:

PFBA作为微塑料-微藻异质聚合的抑制剂.
这些发现突出了水生系统中新出现的污染物和生物成分之间的复杂相互作用.
了解这些相互作用对于评估同时发生的污染物的命运和生态影响至关重要.

关键词:

克洛瑞拉索罗基尼亚纳纳异种聚合的异种聚合.互动互动互动互动这就是为什么PFBA是PFBA.这是PSPSPSPSPS

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