Abstract
Thin film methods and X ray energy dispersive technique were applied to analyze sulfate-containing particles in Beijing in order to examine their features and sources. Atmospheric aerosol particles were collected on electron microscope meshes according to two size ranges: coarse particles (r>05μm) and fine particles (0.5μm>r>0.1μm) by using a two-stage impactor. It was found that more than seventy percent of the fine particles and about twenty percent of the coarse particles were sulfate-containing particles. These particles were formed mainly through heterogeneous nucleation. The element composition analyses revealed that the atmospheric aerosol particles in Beijing were dominated by crustal particles and construction dust.
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This work is supported by the National Post-Doctor Science Foundation.
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Daizhou, Z., Xiaoyan, T., Yu, Q. et al. Tests for individual sulfate-containing particles in urban atmosphere in Beijing. Adv. Atmos. Sci. 12, 343–350 (1995). https://doi.org/10.1007/BF02656983
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DOI: https://doi.org/10.1007/BF02656983