| Size Distributions and Elemental Compositions of Particulate Matter on Clear,Hazy and Foggy days in Beijing,China |
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| 作者姓名： | YANG Yongjie WANG Yuesi HUANG Weiwei HU Bo WEN Tianxue ZHAO Yanan |
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| 作者单位： | 大气物理研究所,Institute of Atmospheric Physics,,,, |
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| 基金项目： | The National Basic Research Program of China (973 Program) |
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| 摘 要： | Total suspended particulates(TSP)samples were collected using low pressure impactors(Andersen Series 20-800,USA)on typical clear,hazy and foggy days in Beijing in order to investigate the characteristics of size distributions and elemental compositions of particulate matter(PM)in different weather conditions. The concentrations of sixteen elements,including Na,Mg,Al,K,Ca,Mn,Fe,Ni,Cu,Zn,As,Se,Cd,Ba,Tl and Pb were detected using inductively coupled plasma mass spectrometry(ICP-MS).The results showed that Ca,Al,Fe,Mg and Ba on foggy days were 2.0-2.6 times higher than on clear days,and 2.3-2.9 times higher than on hazy days.Concentrations of Cu,Zn,As,Se and Pb on foggy days were 163.5,1186.7,65.9,32.0 and 708.2 ng m-3,respectively,in fine particles,and 68.1,289.5,19.8,1.6 and 103.8 ng m-3,respectively,in coarse particles.This was 1.0-8.4 times higher and 1.4-7.4 times higher than on clear and hazy days,respectively.It is then shown that Mg,Al,Fe,Ca and Ba were mainly associated with coarse particles,peaking at 4.7-5.8μm;that Cd,Se,Zn,As,Tl and Pb were most dominant in fine particles,peaking at 0.43-1.1μm;and that Na,K,Ni,Cu and Mn had a multi-mode distribution,with peaks at 0.43-1.1μm and 4.7-5.8μm.The enrichment factors indicated that coal combustion along with vehicle and industry emissions may be the main sources of pollution elements.
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| 关 键 词： | 细颗粒物 元素组成 尺寸分布 雾日 北京 电感耦合等离子体质谱 清除 中国 |
| 收稿时间： | 13 February 2008 |
| 修稿时间： | 6/8/2009 12:00:00 AM |
Size Distributions and Elemental Compositions of Particulate Matter on Clear, Hazy and Foggy days in Beijing, China |
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| YANG Yongjie,WANG Yuesi,HUANG Weiwei,HU Bo,WEN Tianxue,ZHAO Yanan.Size Distributions and Elemental Compositions of Particulate Matter on Clear,Hazy and Foggy days in Beijing,China[J].Advances in Atmospheric Sciences,2010,27(3):663-675. |
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| Authors: | YANG Yongjie WANG Yuesi HUANG Weiwei HU Bo WEN Tianxue and ZHAO Yanan |
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| Institution: | State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, National Research Center for Environmental Analysis and Measurement, Beijing 100029,State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Beijing Huafeng Group of Meteorogical Audio and Video Information, Meteorological Administration, Beijing 100081,State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
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| Abstract: | Total suspended particulates (TSP) samples were collected using low pressure impactors (Andersen Series 20–800, USA) on typical
clear, hazy and foggy days in Beijing in order to investigate the characteristics of size distributions and elemental compositions
of particulate matter (PM) in different weather conditions. The concentrations of sixteen elements, including Na, Mg, Al,
K, Ca, Mn, Fe, Ni, Cu, Zn, As, Se, Cd, Ba, Tl and Pb were detected using inductively coupled plasma mass spectrometry (ICP-MS).
The results showed that Ca, Al, Fe, Mg and Ba on foggy days were 2.0–2.6 times higher than on clear days, and 2.3–2.9 times
higher than on hazy days. Concentrations of Cu, Zn, As, Se and Pb on foggy days were 163.5, 1186.7, 65.9, 32.0 and 708.2 ng
m?3, respectively, in fine particles, and 68.1, 289.5, 19.8, 1.6 and 103.8 ng m?3, respectively, in coarse particles. This was 1.0–8.4 times higher and 1.4–7.4 times higher than on clear and hazy days, respectively.
It is then shown that Mg, Al, Fe, Ca and Ba were mainly associated with coarse particles, peaking at 4.7–5.8 μm; that Cd,
Se, Zn, As, Tl and Pb were most dominant in fine particles, peaking at 0.43–1.1 μm; and that Na, K, Ni, Cu and Mn had a multi-mode
distribution, with peaks at 0.43–1.1 μm and 4.7–5.8 μm. The enrichment factors indicated that coal combustion along with vehicle
and industry emissions may be the main sources of pollution elements. |
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| Keywords: | particulate matter size distribution enrichment factor |
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