环境微塑料与有机污染物的相互作用及联合毒性效应研究进展

环境微塑料可吸附有机污染物,并与有机污染物进行相互作用从而改变其毒性效应,增加微塑料的治理难度.本文就全球范围内微塑料与有机污染物的相互作用及毒性效应的研究进展进行综述,分析不同介质中微塑料与有机污染物的共存水平、吸附机理、影响因素以及联合毒性效应等.研究表明,微塑料可作为多环芳烃(PAHs)、多氯联苯(PCBs)、六...

The interaction and combined toxic effects of microplastics and organic pollutants in the environment:A review

Microplastics in the environment can absorb and interact with organic pollutants to change their toxic effects and increase the difficulty of microplastics treatment.This article reviews the research progress of the interaction between microplastics and organic pollutants and their toxic effects on a global scale,and analyze the coexistence level,adsorption mechanism,influencing factors and joint toxicity effects of microplastics and organic pollutants in different media.Studies have shown that microplastics can be used as carriers for organic pollutants in polycyclic aromatic hydrocarbons(PAHs),Polychlorinated biphenyls(PCBs),Hexachlorocyclohexane(HCHs),DDTs,and the concentration of adsorbed organic pollutants varies greatly between different regions,and the concentration is higher in regions with a large number of industries,ports and agricultural activities.The coexistence mechanism of microplastics and organic pollutants is mainly hydrophobic distribution and electrostatic interaction.The adsorption process is affected by the size and structure of microplastics,aging degree of microplastics,the structure of pollutants(functional group structure,polarity,polymer state),and the adsorption medium(pH,temperature,salinity,etc.).In addition,the combined effect of microplastics and pollutants can increase the concentration of toxic substances in organisms and affect biological functions to increase toxicity.It is also possible to reduce the free state of pollutants in the environment and reduce the enrichment rate and utilization of pollutants to reduce the toxic effect.Finally,this article puts forward the shortcomings of the existing research and prospects the development trend of related research in the future.