Migration of Microplastics in Soil and Its Effect on Organic Pollutants:A Review
In recent years,multi-field application of plastic products leads to the widespread distribution of microplastics(MPs,which are defined as plastic particles particle size less than 5 mm)in the environment and resulting in a series of global environmental problems.Terrestrial system is the largest storage of plastic products as a result of MPs behaviors in soil are the key step in plastic pollution control.This review aims to provide an in-depth mechanism analysis of the interaction between MPs and organic contaminants in soil and the combined effect on their migration.It was found that the global soils have different degrees of MPs pollution especially the farmlands soil in China.Once incorporated into the soil matrix,MPs may alter physicochemical properties and microbial community characteristics of soil.Meanwhile,the migration of MPs may also be affected.MPs can interact with co-existing organic pollutants in soil through hydrophobic interaction,electrostatic force,π-π bonding and other force,which may have effect on the migration of organic pollutions and their environmental toxicity.Future research on MPs in soil should focus more on the precise detection and standardization of MPs,migration modeling of MPs,the effect of aging MPs on their environmental behavior and the interaction between MPs and coexisting pollutants.
万方数据
维普
