Microplastics in water aren’t inert and make damaging chemicals on their own
Summary
A Nature study shows microplastics at the water interface can generate reactive oxygen species (ROS), challenging the notion that plastics are chemically inert. The researchers observed ROS production across six common plastics, with water-repellent types like polyethylene and polypropylene producing the strongest effects, suggesting potential pathways to biological damage through ROS. While the study provides compelling lab evidence, it notes uncertainties about real-world exposure, aging effects, and the magnitude of health impacts, calling for further investigation.