The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
Long-term phototransformation of microplastics under simulated sunlight irradiation in aquatic environments: Roles of reactive oxygen species
Abstract
Microplastics may experience photoaging and breakdown into nanoplastics in aquatic environment as a result of long-term light irradiation. However, the underlying mechanisms responsible for the photodegradation of microplastics are largely overlooked. In this study, the photodegradation of microplastics, utilizing polystyrene microplastic (PS-MP) as a model, was investigated under irradiation with simulated solar light for as long as 150 d. A large amount of reactive oxygen species (ROS), including O2•-, 1O2, H2O2 and •OH, were detected in the PS-MP suspension due to light irradiation, which displayed significant relationships with the generated environmentally persistent free radicals (EPFRs). Distinct photoaging of PS-MP was observed with increased surface roughness and decreased particle size. However, these photoaging effects were significantly inhibited by ROS quenchers, suggesting that the generation ROS played a vital role in the PS-MP phototransformation. In addition, ROS induced formation of more oxidative functional groups on the PS-MP, thus enhancing the negative surface potential and the stability of PS-MP in water. This study elucidated the mechanism of formation of ROS by simulated solar light irradiated MPs and their subsequent roles in the phototransformation of MP, thus expanding current knowledge on the fate of MPs in aquatic environments.
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Self-citationMicroplastics generated from a biodegradable plastic in freshwater and seawater
Wei, X.-F., Bohlén, M., Lindblad, C., Hedenqvist, M., & Hakonen, A. (2021) · Water Research · doi:10.1016/j.watres.2021.117123 · Cited by 387
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Metadata
- Authors
- Zhu, K., Jia, H., Sun, Y., Dai, Y., Zhang, C., Guo, X., Wang, T., & Zhu, L.
- Venue
- Water Research
- Publisher
- Elsevier BV
- Published
- 2020-04
- Volume
- 173
- Pages
- 115564
- ISSN
- 0043-1354 (ISSN-L)
- OpenAlex
- W3003331065
- Cited by
- 633
- References
- 11
- FWCI
- 15.75
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhu, K., Jia, H., Sun, Y., Dai, Y., Zhang, C., Guo, X., Wang, T., & Zhu, L. (2020). Long-term phototransformation of microplastics under simulated sunlight irradiation in aquatic environments: Roles of reactive oxygen species. Water Research. https://doi.org/10.1016/j.watres.2020.115564
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