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Transport of mercury–microplastic complexes in porous media: Roles of Hg-affinitive colloidal particles and surface functionalities

npj Emerging Contaminants 2026
M. X. Wang, Wenxing Chen, Chaoqun Zhu, Yufei Shu, Yuanyuan Tang, Zhongying Wang

Summary

Researchers discovered that mercury-affinitive molybdenum disulfide nanoparticles can strip mercury from microplastic surfaces and co-transport it through porous media, with mobility depending critically on microplastic surface charge, revealing an overlooked colloid-mediated pathway for heavy metal migration in soil and groundwater systems.

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