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[Transformation Behavior and Environmental Effects of Microplastics in Soil-groundwater].
Summary
This review synthesizes current knowledge on the transformation behavior and environmental effects of microplastics in soil-groundwater systems, covering their sources, transport pathways, physicochemical transformations, and ecological impacts in this understudied environmental compartment that has emerged as a significant sink for microplastic pollution.
As an emerging pollutant, microplastics exist widely in the environment. At present, the research on microplastics mainly focuses on the atmosphere, ocean, river, and other environmental media. Soil-groundwater has become a significant sink and has received increased interest in recent years. However, the understanding of the transformation behavior and environmental effects of microplastics in the soil-groundwater environment is not yet well understood. Therefore, this review mainly focused on： ① the present research status and progress of microplastics in the soil-groundwater； ② the source and distribution of microplastics； ③ the biological and non-biological transformation of microplastics； and ④ the non-biological enrichment, biological enrichment, and transport effects of microplastics. Additionally, in order to better understand the transformation behavior and environmental effects of microplastics in soil-groundwater in the future, this review systematically summarized and analyzed the shortcomings and limitations of microplastics research status and supplemented and prospected future research directions.