Articles | Volume 19, issue 4
Atmos. Chem. Phys., 19, 2283–2298, 2019
https://doi.org/10.5194/acp-19-2283-2019
Atmos. Chem. Phys., 19, 2283–2298, 2019
https://doi.org/10.5194/acp-19-2283-2019

Research article 21 Feb 2019

Research article | 21 Feb 2019

Primary emissions versus secondary formation of fine particulate matter in the most polluted city (Shijiazhuang) in North China

Ru-Jin Huang et al.

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Short summary
We found that in wintertime Shijiazhuang fine PM was mostly from primary emissions without sufficient atmospheric aging. In addition, secondary inorganic and organic aerosol dominated in pollution events under high-RH conditions, likely due to enhanced aqueous-phase chemistry, whereas primary organic aerosol dominated in pollution events under low-RH and stagnant conditions. Our results also highlighted the importance of meteorological conditions for PM pollution in this highly polluted city.
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