The First Observation of the Formation of Persistent Aminoxyl Radicals and Reactive Nitrogen Species on Photoirradiated Nitrogen-Containing Microplastics

• Published in: Environmental science & technology Vol. 56; no. 2; pp. 779 - 789
• Main Authors: Zhu, Kecheng, Jia, Hanzhong, Jiang, Wenjun, Sun, Yajiao, Zhang, Chi, Liu, Ze, Wang, Tiecheng, Guo, Xuetao, Zhu, Lingyan
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 18.01.2022
• Subjects: Amino resins; anisotropy; Anthropogenic Impacts on the Atmosphere; Density functional theory; Electron paramagnetic resonance; electron paramagnetic resonance spectroscopy; Electron spin resonance; Electron Spin Resonance Spectroscopy; environmental science; Free Radicals; Health risks; hydroperoxides; Irradiation; Light irradiation; Microplastics; Nitrogen; Nitrogen dioxide; Peroxynitrite; photoaging; Photoelectron spectroscopy; Photoelectrons; photoirradiation; Plastic pollution; Plastics; Polyamide resins; Polyamides; Raman spectroscopy; Reactive Nitrogen Species; Spectroscopy; Spectrum analysis; toxicology; X-ray photoelectron spectroscopy; Nitrogen-containing microplastics; Persistent aminoxyl radicals; Oxidative potential; Photoaging; Reductive potential; Reactive nitrogen species

Nitrogen-containing microplastics (N-MPs) are widely present in the atmosphere, but their potential health risks have been overlooked. In this study, the formation of persistent aminoxyl radicals (PAORs) and reactive nitrogen species (RNSs) on the N-MPs under light irradiation was investigated. Afte...