微塑料环境赋存及其与有机污染物的作用机理研究进展

Research progress on environmental occurrence of microplastics and their interaction mechanism with organic pollutants

微塑料(MPs)普遍存在于全球各种环境介质中,可以吸附共存的污染物,尤其是有机污染物,进而改变其环境行为和毒性,也可以通过吸附/解吸作用促进污染物在不同介质中的迁移.MPs与有机污染物的吸附影响因素及其作用机理是准确评估MPs和有机污染物环境风险的必要信息.因MPs成分、结构、表面特征等的复杂性及其共存有机污染物的多样性使两者的相互作用十分复杂.本文对MPs在环境介质中的赋存、迁移、吸附有机污染物的影响因素及其相互作用机理进行了系统总结,以期为进一步评估MPs的环境行为和生态风险提供参考.

Microplastics are ubiquitous in various environmental media on a global scale,and can adsorb co-existing pollutants,especially organic pollutants,thus changing the environmental behavior and toxicity of pollutants;they can also promote the migration of pollutants in different media through adsorption/desorption.Influencing factors and mechanisms of adsorption between microplastics and organic pollutants are necessary information for a comprehensive assessment of the environmental risks of microplastics and organic pollutants.Due to the complexity of composition,structure and surface characteristics of microplastics and the diversity of co-existing organic pollutants,the interaction between them is very complex.The authors systematically summarized the current status of occurrence and migration of microplastic in environmental media,the influencing factors of microplastic adsorption of organic pollutants and their interaction mechanisms,with a view to providing useful references for the in-depth understanding of the environmental behavior and ecological risks of microplastics.