Articles | Volume 18, issue 14
Atmos. Chem. Phys., 18, 10123–10132, 2018

Special issue: Regional transport and transformation of air pollution in...

Atmos. Chem. Phys., 18, 10123–10132, 2018

Research article 17 Jul 2018

Research article | 17 Jul 2018

Particle acidity and sulfate production during severe haze events in China cannot be reliably inferred by assuming a mixture of inorganic salts

Gehui Wang et al.


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Gehui Wang on behalf of the Authors (29 May 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (31 May 2018) by Zhanqing Li
RR by Anonymous Referee #1 (25 Jun 2018)
ED: Publish as is (02 Jul 2018) by Zhanqing Li
Short summary
Several studies using thermodynamic models estimated pH and sulfate formation rate during pollution periods in China are highly conflicting. Here we show distinct sulfate formation for organic seed particles from that of (NH4)2SO4 seeds, when the particles are exposed to SO2, NO2, and NH3 at high RH. Our results reveal that the pH value of ambient organics-dominated aerosols is sufficiently high to promote efficient SO2 oxidation by NO2 with NH3 neutralization under polluted conditions in China.
Final-revised paper