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.
蒋凡殊, 曹妍, 张林丰, 师伟萌, 宋浩然, 王浩骏, 杨艳琳, 赵群, 李杰, 李曼焘. 微塑料与肺表面活性物质相互作用[J]. 中国环境科学, 2024, 44(1): 474-481.
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. Study on the interaction between microplastics and lung surfactants. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(1): 474-481.
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