@article {SONG2023164455,
	title = {Impact of aerosol in-situ peroxide formations induced by metal complexes on atmospheric H2O2 budgets},
	journal = {Science of The Total Environment},
	volume = {892},
	year = {2023},
	pages = {164455},
	abstract = {Hydrogen peroxide (H2O2), hydroxyl radicals (OH), hydroperoxyl (HO2), and superoxide (O2-) radicals interacting with aerosol particles significantly affect the atmospheric pollutant budgets. A multiphase chemical kinetic box model (PKU-MARK), including the multiphase processes of transition metal ions (TMI) and their organic complexes (TMI-OrC), was built to numerically drive H2O2 chemical behaviors in the aerosol particle liquid phase using observational data obtained from a field campaign in rural China. Instead of relying on fixed uptake coefficient values, a thorough simulation of multiphase H2O2 chemistry was performed. In the aerosol liquid phase, light-driven TMI-OrC reactions promote OH, HO2/O2-, and H2O2 recycling and spontaneous regenerations. The in-situ generated aerosol H2O2 would offset gas-phase H2O2 molecular transfer into the aerosol bulk phase and promote the gas-phase level. When combined with the multiphase loss and in-situ aerosol generation involving TMI-OrC mechanism, the HULIS-Mode significantly improves the consistency between modeled and measured gas-phase H2O2 levels. Aerosol liquid phase could be a pivotal potential source of aqueous H2O2 and influence the multiphase budgets. Our work highlights the intricate and significant effects of aerosol TMI and TMI-OrC interactions on the multiphase partitioning of H2O2 when assessing atmospheric oxidant capacity.},
	keywords = {HO, Multiphase chemistry kinetic model, radicals, TMI and organic complexes},
	issn = {0048-9697},
	doi = {https://doi.org/10.1016/j.scitotenv.2023.164455},
	url = {https://www.sciencedirect.com/science/article/pii/S0048969723030760},
	author = {Song, Huan and Lu, Keding and HuaBin Dong and Zhaofeng Tan and Shiyi Chen and Zhongming Chen and Limin Zeng and Yuanhang Zhang}
}
