Dr. Laodong Guo and Postdoctoral Research Associate Shimaa Kteeba coauthored a new research paper titled “UV-induced release and characterization of dissolved organic matter from disposable face mask layers and polypropylene” that was published in the Journal of Hazardous Materials. The paper highlights:
- All mask plies are susceptible to UV weathering, with DOM yields following SFM>N95 > KN95.
- Aromaticity and molecular weight in FMs-derived DOM decreased generally during UV-irradiation.
- Three major fluorescent components were identified in every mask each with unique DOM composition.
- SEM images revealed clear fiber fragmentation after UV-irradiation.
Guo’s lab also has presented at various meetings and conferences recently. Dr. Guo attended the the 2025 Goldschmidt Meeting during 6-11 July 2025 in Prague, Czech Republic, and presented a paper on “Depositional history of PFAS in the bay of Green Bay in Lake Michigan over the last 80 years.”
At the ACS Fall Meeting during August in Washington DC, lab members Wenxin Zhang, Shimaa Kteeba, and Guo presented “Ultrafiltration permeation behavior and partitioning of PFAS between dissolved and colloidal phases.” Additionally, Kteeba, Krueger and Guo presented Yields and characterization of microplastic-derived dissolved organic matter from various polymers under different leaching conditions.”
Congratulations to Dr. Guo and his lab team members!