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UV exposure to PET microplastics increases their downward mobility in stormwater biofilters undergoing freeze–thaw cycles

Environmental Science Water Research & Technology 2023 10 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Haley J. Gunther, Tonoy K. Das, Jamie Leonard, Vera S. Koutnik, Lea A. El Rassi, Zilong Tang, Sanjay K. Mohanty

Summary

Researchers found that UV weathering of PET microplastics increases their downward mobility in stormwater biofilters undergoing freeze-thaw cycles, as UV exposure creates polar surface groups that decrease hydrophilicity and enhance particle transport.

Polymers

An increase in microplastic weathering under UV lights decreases their surface hydrophilicity by the formation of polar groups and increases their mobility in the stormwater biofilter under freeze–thaw cycles.

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