Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 16, issue 13
Articles | Volume 16, issue 13
https://doi.org/10.5194/acp-16-8081-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-16-8081-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 16, issue 13
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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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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