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Volume 16, issue 4
Atmos. Chem. Phys., 16, 2641–2657, 2016
https://doi.org/10.5194/acp-16-2641-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Chem. Phys., 16, 2641–2657, 2016
https://doi.org/10.5194/acp-16-2641-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 03 Mar 2016

Research article | 03 Mar 2016

Nucleation and growth of sub-3 nm particles in the polluted urban atmosphere of a megacity in China

Huan Yu et al.

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Anttila, T., Kerminen, V.-M., Kulmala, M., Laaksonen, A., and O'Dowd, C. D.: Modelling the formation of organic particles in the atmosphere, Atmos. Chem. Phys., 4, 1071–1083, https://doi.org/10.5194/acp-4-1071-2004, 2004.
Asmi, E., Sipilä, M., Manninen, H. E., Vanhanen, J., Lehtipalo, K., Gagné, S., Neitola, K., Mirme, A., Mirme, S., Tamm, E., Uin, J., Komsaare, K., Attoui, M., and Kulmala, M.: Results of the first air ion spectrometer calibration and intercomparison workshop, Atmos. Chem. Phys., 9, 141–154, https://doi.org/10.5194/acp-9-141-2009, 2009.
Brus, D., Neitola, K., Hyvärinen, A.-P., Petäjä, T., Vanhanen, J., Sipilä, M., Paasonen, P., Kulmala, M., and Lihavainen, H.: Homogenous nucleation of sulfuric acid and water at close to atmospherically relevant conditions, Atmos. Chem. Phys., 11, 5277–5287, https://doi.org/10.5194/acp-11-5277-2011, 2011.
Chan, C. K. and Yao, X.: Air pollution in mega cities in China, Atmos. Environ., 42, 1–42, https://doi.org/10.1016/j.atmosenv.2007.09.003, 2008.
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New particle formation is an important source of atmospheric aerosols. We conducted size- and time-dependent nucleation rate and growth rate measurements of sub-3 nm particles in the urban atmosphere. We observed that growth rate could be very high between 1 and 3 nm and did not increase monotonically with particle size. This was interpreted as the solvation effect of organic vapor in inorganic nuclei. The growth rate behavior gives new insight into cluster dynamics in polluted environments.
New particle formation is an important source of atmospheric aerosols. We conducted size- and...
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