Print Email Facebook Twitter Photo-oxidation of Micro-and Nanoplastics Title Photo-oxidation of Micro-and Nanoplastics: Physical, Chemical, and Biological Effects in Environments Author Xu, Yanghui (TU Delft Sanitary Engineering; Chinese Academy of Sciences) Ou, Q. (TU Delft Sanitary Engineering; Chinese Academy of Sciences) van der Hoek, J.P. (TU Delft Sanitary Engineering; Waternet) Liu, G. (TU Delft Sanitary Engineering; Chinese Academy of Sciences) Lompe, K.M. (TU Delft Sanitary Engineering) Date 2024 Abstract Micro- and nanoplastics (MNPs) are attracting increasing attention due to their persistence and potential ecological risks. This review critically summarizes the effects of photo-oxidation on the physical, chemical, and biological behaviors of MNPs in aquatic and terrestrial environments. The core of this paper explores how photo-oxidation-induced surface property changes in MNPs affect their adsorption toward contaminants, the stability and mobility of MNPs in water and porous media, as well as the transport of pollutants such as organic pollutants (OPs) and heavy metals (HMs). It then reviews the photochemical processes of MNPs with coexisting constituents, highlighting critical factors affecting the photo-oxidation of MNPs, and the contribution of MNPs to the phototransformation of other contaminants. The distinct biological effects and mechanism of aged MNPs are pointed out, in terms of the toxicity to aquatic organisms, biofilm formation, planktonic microbial growth, and soil and sediment microbial community and function. Furthermore, the research gaps and perspectives are put forward, regarding the underlying interaction mechanisms of MNPs with coexisting natural constituents and pollutants under photo-oxidation conditions, the combined effects of photo-oxidation and natural constituents on the fate of MNPs, and the microbiological effect of photoaged MNPs, especially the biotransformation of pollutants. Subject MicroplasticsPhoto-oxidationPhysical EffectsPhotochemical Processes To reference this document use: http://resolver.tudelft.nl/uuid:4d8724f7-f7b6-4a8d-86b5-b52cd5097797 DOI https://doi.org/10.1021/acs.est.3c07035 ISSN 0013-936X Source Environmental Science & Technology (Washington), 58 (2), 991-1009 Part of collection Institutional Repository Document type review Rights © 2024 Yanghui Xu, Q. Ou, J.P. van der Hoek, G. Liu, K.M. Lompe Files PDF xu_et_al_2024_photo_oxida ... nments.pdf 3.58 MB Close viewer /islandora/object/uuid:4d8724f7-f7b6-4a8d-86b5-b52cd5097797/datastream/OBJ/view