Articles | Volume 24, issue 23
https://doi.org/10.5194/acp-24-13219-2024
https://doi.org/10.5194/acp-24-13219-2024
Measurement report
 | 
29 Nov 2024
Measurement report |  | 29 Nov 2024

Measurement report: Oxidation potential of water-soluble aerosol components in the south and north of Beijing

Wei Yuan, Ru-Jin Huang, Chao Luo, Lu Yang, Wenjuan Cao, Jie Guo, and Huinan Yang

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Cited articles

Ahmad, M., Yu, Q., Chen, J., Cheng, S., Qin, W., and Zhang, Y.: Chemical characteristics, oxidative potential, and sources of PM2.5 in wintertime in Lahore and Peshawar, Pakistan, J. Environ. Sci., 102, 148–158, https://doi.org/10.1016/j.jes.2020.09.014, 2021. 
Al-Naiema, I. M. and Stone, E. A.: Evaluation of anthropogenic secondary organic aerosol tracers from aromatic hydrocarbons, Atmos. Chem. Phys., 17, 2053–2065, https://doi.org/10.5194/acp-17-2053-2017, 2017. 
An, Z., Huang, R. J., Zhang, R., Tie, X., Li, G., Cao, J., Zhou, W., Shi, Z., Han, Y., Gu, Z., and Ji, Y.: Severe haze in northern China: A synergy of anthropogenic emissions and atmospheric processes, P. Natl. Acad. Sci. USA, 116, 8657–8666, https://doi.org/10.1073/pnas.1900125116, 2019. 
Bates, J. T., Fang, T., Verma, V., Zeng, L., Weber, R. J., Tolbert, P. E., Abrams, J. Y., Sarnat, S. E., Klein, M., Mulholland, J. A., and Russell, A. G.: Review of Acellular Assays of Ambient Particulate Matter Oxidative Potential: Methods and Relationships with Composition, Sources, and Health Effects, Environ. Sci. Technol., 53, 4003–4019, https://doi.org/10.1021/acs.est.8b03430, 2019. 
Besis, A., Romano, M. P., Serafeim, E., Avgenikou, A., Kouras, A., Lionetto, M. G., Guascito, M. R., De Bartolomeo, A. R., Giordano, M. E., Mangone, A., Contini, D., and Samara, C.: Size-Resolved Redox Activity and Cytotoxicity of Water-Soluble Urban Atmospheric Particulate Matter: Assessing Contributions from Chemical Components, Toxics, 11, 59, https://doi.org/10.3390/toxics11010059, 2023. 
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We characterized water-soluble oxidative potential (OP) levels in wintertime PM2.5 in the south and north of Beijing. Our results show that the volume-normalized dithiothreitol (DTTv) in the north was comparable to that in the south, while the mass-normalized dithiothreitol (DTTm) in the north was almost twice that in the south. Traffic-related emissions and biomass burning were the main sources of DTTv in the south, and traffic-related emissions contributed the most to DTTv in the north.
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