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Figshare- Soil-plastisphere interfacial properties decode the environmental behaviour of microplastics

Figshare 2026
Nasrollah Sepehrnia, Behrooz Azimzadeh, Lowri Charlton, Hernán Barrio‐Zhang, Paul D. Hallett, Cécile Gubry‐Rangin, Yukie Tanino, Glen McHale, Carmen Enid Martı́nez

Summary

Tiny plastic bits in soil (microplastics) don't just sit there — they actually change the soil around them as they break down, altering how water-repellent the area becomes over time. This matters because these changes can affect how water and pollutants travel through soil, which could impact the quality of crops we eat and the groundwater we drink.

This study shows that microplastics create a distinct zone in the surrounding soil, known as the soil-plastisphere, where soil properties differ from those of the bulk soil. As the microplastics age, their surfaces become less water repellent, while the surrounding soil becomes more water-repellent and the forces between soil particles and microplastics weaken. These changes can affect how water and pollutants move through soil, with potential consequences for soil health and environmental quality.

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