Articles | Volume 22, issue 7
https://doi.org/10.5194/acp-22-5017-2022
https://doi.org/10.5194/acp-22-5017-2022
Measurement report
 | 
14 Apr 2022
Measurement report |  | 14 Apr 2022

Measurement report: Characterization and source apportionment of coarse particulate matter in Hong Kong: insights into the constituents of unidentified mass and source origins in a coastal city in southern China

Yee Ka Wong, Kin Man Liu, Claisen Yeung, Kenneth K. M. Leung, and Jian Zhen Yu

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Cited articles

Adar, S. D., Filigrana, P. A., Clements, N., and Peel, J. L.: Ambient coarse particulate matter and human health: A systematic review and meta-analysis, Curr. Environ. Health Rep., 1, 258–274, https://doi.org/10.1007/s40572-014-0022-z, 2014. 
Bates, J. T., Fang, T., Verma, V., Zeng, L. H., 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. 
Bian, Q., Huang, X. H. H., and Yu, J. Z.: One-year observations of size distribution characteristics of major aerosol constituents at a coastal receptor site in Hong Kong – Part 1: Inorganic ions and oxalate, Atmos. Chem. Phys., 14, 9013–9027, https://doi.org/10.5194/acp-14-9013-2014, 2014. 
Bian, Y., Huang, Z., Ou, J., Zhong, Z., Xu, Y., Zhang, Z., Xiao, X., Ye, X., Wu, Y., Yin, X., Li, C., Chen, L., Shao, M., and Zheng, J.: Evolution of anthropogenic air pollutant emissions in Guangdong Province, China, from 2006 to 2015, Atmos. Chem. Phys., 19, 11701–11719, https://doi.org/10.5194/acp-19-11701-2019, 2019. 
Chen, R. J., Yin, P., Meng, X., Wang, L. J., Liu, C., Niu, Y., Liu, Y. N., Liu, J. M., Qi, J. L., You, J. L., Kan, H. D., and Zhou, M. G.: Associations between coarse particulate matter air pollution and cause-specific mortality: A nationwide analysis in 272 Chinese cities, Environ. Health Perspect., 127, 017008, https://doi.org/10.1289/ehp2711, 2019. 
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Short summary
Coarse particulate matter (PM) has been shown to cause adverse health impacts, but compared to PM2.5, the source of coarse PM is less studied through field measurements. We collected chemical composition data for coarse PM in Hong Kong for a 1-year period. Using statistical models, we found that regional transport of fugitive dust is responsible for the elevated coarse PM. This work sets an example of how field measurements can be effectively utilized for evidence-based policymaking.
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