Study on the interaction between microplastics and lung surfactants
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 5.61 mV 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.
microplasticslung surfactantinterfacial propertieslung health
万方数据
维普
