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《Environmental Science & Technology》 2017-06
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Size Distributions of Elements in Atmospheric Particulates of the Typical Background Region

WANG Shenbo;YU Fei;YAN Qishe;WANG Qun;JIANG Nan;YIN Shasha;ZHANG Ruiqin;College of Chemistry and Molecular Engineering, Zhengzhou University;  
In order to investigate the characteristics of metal elements in atmospheric particulates of rural area, the samples were collected using a four-stage cascade impactor(1 μm, 1~2.5 μm, 2.5~10 μm, 10~18 μm) in Zhongmu County, Henan Province during winter in 2014. The concentrations of 23 elements were analyzed by ICP-MS, and pollution sources of ele-ments were identified by enrichment factor(EF) and principal component analysis(PCA). The results showed that the metal elements concentrations were higher than Shanghai and Beijing and presented a distinctly variation in different sizes. Se, Cd,Ag, Sb, Pb, Sn, Zn, Cr, Cu and As were significantly influenced by anthropogenic emissions, while Ca, Sr, Ba, Be, Mn, Mg,K, V, Fe, Al and Ti were mainly from natural sources. The main sources of elements included crust, coal combustion, vehicle emission, industry, incineration and construction dust. The results can help government make efficient policies to air quality.
【Fund】: 环境保护部公益项目(201409010)
【CateGory Index】: X513
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