Articles | Volume 18, issue 7
https://doi.org/10.5194/acp-18-5115-2018
https://doi.org/10.5194/acp-18-5115-2018
Research article
 | 
16 Apr 2018
Research article |  | 16 Apr 2018

Hygroscopic behavior of atmospheric aerosols containing nitrate salts and water-soluble organic acids

Bo Jing, Zhen Wang, Fang Tan, Yucong Guo, Shengrui Tong, Weigang Wang, Yunhong Zhang, and Maofa Ge

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Cited articles

Badger, C. L., George, I., Griffiths, P. T., Braban, C. F., Cox, R. A., and Abbatt, J. P. D.: Phase transitions and hygroscopic growth of aerosol particles containing humic acid and mixtures of humic acid and ammonium sulphate, Atmos. Chem. Phys., 6, 755–768, https://doi.org/10.5194/acp-6-755-2006, 2006.
Booth, A. M., Murphy, B., Riipinen, I., Percival, C. J., and Topping, D. O.: Connecting bulk viscosity measurements to kinetic limitations on attaining equilibrium for a model aerosol composition, Environ. Sci. Technol., 48, 9298–9305, https://doi.org/10.1021/es501705c, 2014.
Boreddy, S. K. R., Kawamura, K., and Jung, J.: Hygroscopic properties of particles nebulized from water extracts of aerosols collected at Chichijima Island in the western North Pacific: An outflow region of Asian dust, J. Geophys. Res.-Atmos., 119, 167–178, https://doi.org/10.1002/2013jd020626, 2014a.
Boreddy, S. K. R. and Kawamura, K.: Hygroscopic growth of water-soluble matter extracted from remote marine aerosols over the western North Pacific: Influence of pollutants transported from East Asia, Sci. Total. Environ., 557, 285–295, https://doi.org/10.1016/j.scitotenv.2016.03.096, 2016.
Boreddy, S. K. R., Kawamura, K., Mkoma, S., and Fu, P.: Hygroscopic behavior of water-soluble matter extracted from biomass burning aerosols collected at a rural site in Tanzania, East Africa, J. Geophys. Res.-Atmos., 119, 12233–12245, https://doi.org/10.1002/2014jd021546, 2014b.
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The nitrate/organic acid mixed aerosols exhibit varying phase behavior and hygroscopic growth depending upon the type of components in the particles. Our results reveal that the coexisting organic acid has considerable impacts on the phase and morphology of nitrate particles in the low and medium RH range, which thus result in obvious enhancement or suppression of water uptake with increasing RH. This new information provided here has important implications for atmospheric chemistry.
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