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Transport and transformation of microplastics and nanoplastics in the soil environment: A critical review

Soil Use and Management 2021 88 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Runzi Cao, Runzi Cao, Yuan Liu Yuan Liu Shengdong Liu, Yuan Liu Runzi Cao, Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Heng Shao, Enxiang Shang, Jingnan Liu, Heng Shao, Runzi Cao, Yuan Liu Heng Shao, Heng Shao, Runzi Cao, Enxiang Shang, Shengdong Liu, Yang Li, Yuan Liu Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Enxiang Shang, Jingnan Liu, Jingnan Liu, Yuan Liu Yang Li, Shengdong Liu, Enxiang Shang, Yuan Liu Yuan Liu Yang Li, Yang Li, Yuan Liu Yang Li, Runzi Cao, Yuan Liu Jingnan Liu, Runzi Cao, Yang Li, Runzi Cao, Runzi Cao, Enxiang Shang, Shengdong Liu, Yang Li, Enxiang Shang, Heng Shao, Enxiang Shang, Heng Shao, Yuan Liu Yang Li, Enxiang Shang, Enxiang Shang, Enxiang Shang, Yang Li, Yang Li, Shengdong Liu, Enxiang Shang, Enxiang Shang, Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Yang Li, Yuan Liu

Summary

This critical review examines how microplastics and nanoplastics move through and transform within soil environments. Researchers discuss aggregation, sorption of contaminants, interactions with soil organisms, and degradation pathways that affect the fate of plastic particles in terrestrial systems. The study identifies major knowledge gaps in understanding subsurface plastic transport and calls for standardized methods to better assess the ecological and health risks of soil plastic pollution.

Abstract Soil pollution by microplastics (MPs, 0.1 μm ~ 5 mm) and nanoplastics (NPs, ≤0.1 μm) has drawn much attention in recent years due to its potential ecological and human health risks; however, there are very limited studies and a general lack of consensus regarding the transport and transformation of MPs/NPs in soil environment. This review critically discusses the environmental behaviour of soil MPs/NPs, including the homo‐aggregation or hetero‐aggregation with other particles, sorption of pollutants and the photoaging process. The physicochemical property change of aggregated and aged MPs and its effect on the transport of other pollutants in soil has also been reviewed. Critical factors that affect the fate of MPs/NPs, including the physicochemical properties of MPs/NPs, physicochemical properties of soil and environmental factors, are reviewed to understand the latest progress in the environmental behaviour of soil MPs. Finally, we identify important research gaps, which include standard uniformity of quantification method, transformation mechanism elucidation and long‐term field studies. The review provides an overview of current findings for transport and transformation of MPs/NPs in natural soil environment and gives comments for future work.

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