Articles | Volume 16, issue 13
https://doi.org/10.5194/acp-16-8081-2016
https://doi.org/10.5194/acp-16-8081-2016
Research article
 | 
04 Jul 2016
Research article |  | 04 Jul 2016

Heterogeneous reactions of NO2 with CaCO3–(NH4)2SO4 mixtures at different relative humidities

Fang Tan, Shengrui Tong, Bo Jing, Siqi Hou, Qifan Liu, Kun Li, Ying Zhang, and Maofa Ge

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Maofa Ge on behalf of the Authors (26 May 2016)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (03 Jun 2016) by Yafang Cheng
RR by Anonymous Referee #2 (07 Jun 2016)
ED: Publish as is (13 Jun 2016) by Yafang Cheng
AR by Maofa Ge on behalf of the Authors (17 Jun 2016)  Author's response   Manuscript 
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Short summary
The heterogeneous reactions of NO2 with CaCO3–(NH4)2SO4 mixtures were markedly dependent on RH. Calcium nitrate was formed under both dry and wet conditions; bassanite, gypsum, and koktaite were produced depending on RH. The heterogeneous uptake of NO2 on the CaCO3–(NH4)2SO4 mixtures was similar to that on pure CaCO3 particles under the dry condition, whereas the mixtures exhibited a promotive effect on the heterogeneous uptake of NO2 and the formation of nitrate, especially at medium RHs.
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