Articles | Volume 16, issue 2
Atmos. Chem. Phys., 16, 1123–1138, 2016
https://doi.org/10.5194/acp-16-1123-2016
Atmos. Chem. Phys., 16, 1123–1138, 2016
https://doi.org/10.5194/acp-16-1123-2016

Research article 01 Feb 2016

Research article | 01 Feb 2016

Particle hygroscopicity and its link to chemical composition in the urban atmosphere of Beijing, China, during summertime

Z. J. Wu et al.

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Cited articles

Achtert, P., Birmili, W., Nowak, A., Wehner, B., Wiedensohler, A., Takegawa, N., Kondo, Y., Miyazaki, Y., Hu, M., and Zhu, T.: Hygroscopic growth of tropospheric particle number size distributions over the North China Plain, J. Geophys. Res.-Atmos., 114, D00G07, https://doi.org/10.1029/2008JD010921, 2009.
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Arnott, P., Moosmüller, H., Fred Rogers, C., Jin, T., and Bruch, R.: Photoacoustic spectrometer for measuring light absorption by aerosol: instrument description, Atmos. Environ., 33, 2845–2852, https://doi.org/10.1016/S1352-2310(98)00361-6, 1999.
Bhattu, D. and Tripathi, S. N.: CCN closure study: Effects of aerosol chemical composition and mixing state, J. Geophys. Res.-Atmos., 120, 766–783, https://doi.org/10.1002/2014JD021978, 2015.
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Short summary
Most pre-existing measurements lack a linkage between particle hygroscopicity and chemical composition with a high time resolution in China. Our work provided a general overview of particle hygroscopicity and its closure with chemical composition on the basis of HTDMA and AMS measurements. An increase in particle hygroscopicity with increasing air pollution level was found, as well as a quick transformation from external mixtures to internal mixtures for pre-existing particles during NPF events.
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