微塑料与肺表面活性物质相互作用

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Abstract Polyvinyl chloride (PVC) and polyethylene (PE) were selected as the representatives of microplastics to investigate the interaction between microplastics and lung surfactant (LS). The results demonstrated that PVC and PE could adsorb the active components of LS, and their adsorption rates towards phospholipid components reached 49.33% and 47.00%, respectively, which resulted in the increase of surface tension and the inward contraction of the surface pressure area isotherm (π-A) of LS. After interaction with LS, the surface morphology and zeta potential of microplastics were also changed. The absolute values of zeta potential of PVC and PE decreased by 5.61mV and 5.20mV, respectively, which further affected the dispersion state and settling performance of microplastics. Therefore, when microplastics enter the lung environment through the respiratory system, they can not only change the chemical properties of the LS interface, but also affect their own properties, possibly inducing more serious health hazards.

Key words： microplastics lung surfactant interfacial properties lung health

Received: 29 May 2023

PACS:

X503.1

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	Articles by authors
	JIANG Fan-shu
	CAO Yan
	ZHANG Lin-feng
	SHI Wei-meng
	SONG Hao-ran
	WANG Hao-jun
	YANG Yan-lin
	ZHAO Qun
	LI Jie
	LI Man-tao

Cite this article:

JIANG Fan-shu,CAO Yan,ZHANG Lin-feng等. Study on the interaction between microplastics and lung surfactants[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(1): 474-481.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I1/474

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