| Tests for individual Sulfate－Containing Particles in Urban Atmosphere in Beijing |
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| 作者姓名： | Zhang Daizhou Tang Xiaoyan Qin Yu Yasunobu Iwasak Gai Xiuzhen |
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| 作者单位： | Zhang Daizhou ; Tang Xiaoyan(Center for Environmental Sciences of Peking University，Beijing 100871)Qin Yu (Geophysics Department of Peking University，Beijing 100871)Yasunobu Iwasaka (Solar Terrestrial Environment Laboratory，Nagoya University，Toyokawa |
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| 摘 要： | 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 mi-croscope meshes according to two size ranges: coarse particles (r>0.5μm) and fine particles (0.5μm≥r≥0.1μm) by using a two-stage impactor. It was found fiat 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 domi-nated by crustal particles and construction dust.
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| 收稿时间： | 26 December 1994 |
Tests for individual sulfate-containing particles in urban atmosphere in Beijing |
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| Zhang Daizhou,Tang Xiaoyan,Qin Yu,Yasunobu Iwasak,Gai Xiuzhen.Tests for individual sulfate-containing particles in urban atmosphere in Beijing[J].Advances in Atmospheric Sciences,1995,12(3):343-350. |
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| Authors: | Zhang Daizhou Tang Xiaoyan Qin Yu Yasunobu Iwasaka Gai Xiuzhen |
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| Affiliation: | Center for Environmental Sciences of Peking University, Beijing 10087,Center for Environmental Sciences of Peking University, Beijing 10087,Geophysics Department of Peking University, Beijing 100871,Solar Terrestrial Environment Laboratory, Nagoya University, Toyokawa 442, Japan,Electron Microscope Laboratory of Peking University, Beijing 100871 |
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| 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.
This work is supported by the National Post-Doctor Science Foundation. |
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| Keywords: | Individual sulfate-containing particles Thin film method Morphological analysis X ray energy dispersive analysis |
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