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《Environmental Science & Technology》 2013-05
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Characteristics of Chemical Elements in Atmospheric PM_(2.5) during the Spring Festival in Chengdu

TANG Xin-ying1,LUO Lei1,CAO Jun-ji2,WANG Qi-yuan3(1.Chengdu Institute of Plateau Meteorology,China Meteorology Administration,Chengdu 610071,China; 2.Key Laboratory of Aerosol,Institute of Earth Environment,Chinese Academy of Sciences,Xi'an 710075,China; 3.Department of Environmental Science and Engineering,Xi'an Jiaotong University,Xi'an 710049,China)  
Ambient PM2.5 samples were collected during Spring Festival at a site in Chengdu to investigate characteristics of firework displays.Concentrations of 23 elements were determined by X-ray fluorescence.Results indicated that PM2.5 mass concentrations during the New Year's Eve and Lantern Festival were 137.9 μg/m3 and 287.5 μg/m3 respectively,concentrations of S,K,Cl,Al,Ba,Mg,Pb and Cu in the New Year's Eve and Lantern Festival were 1.44~14.27 times higher than other sampling time.Enrichment factor analysis showed that S,Cl,K,Zn,As,Br,Sr,Cd,Sn,Ba,Pb,Cu were mainly caused by human activities.Principal component analysis demonstrated that main sources of elements during Spring Festival were fireworks discharge,motor vehicle emission and coal-fired emission,followed by metallurgical and machinery manufacturing emission.
【Fund】: 四川省气象局重点科研和应用开发项目(2010-青年-10 2007-4);; 公益性行业科研专项(GYHY201206041);; 中国气象局成都高原气象研究所科研费专项经费项目(BROP201018 BROP201014 BROP201121 BROP200806)
【CateGory Index】: X831
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