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《Environmental Science & Technology》 2013-S1
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Analysisof the Water-soluble Anion in PM_(10)&PM_(2.5) in Optics Valley, Wuhan

ZENG Fan1,HU Hui1,GAO Shang-peng1,LIANG Sheng-wen2,WANF Jian-min2(1.Schlool of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;2.Wuhan Environmental Monitoring Center,Wuhan 430015,China)  
PM10 and PM2.5 samples were collected from January 2009 to December 2011 at two sites(site G and site H) in business area of Optics Valley,Wuhan.Mass concentration of PM10 PM2.5 was analyzed.Four kinds of water-soluble anions of PM2.5 in haze days were determined by ion chromatography.The results showed that the annual average concentration of PM10 and PM2.5 at site G exceeded 1.48 to 1.73 times and 1.94 to 2.4 times,respectively,compared with limit value of Class Ⅱ(GB3095-2012).While the concentration at site H exceeded 1.16 to 1.4 times and 1.26 to 1.86 times,respectively.NO3-、 SO42-、NO2-and Cl-were the major water-soluble anions in particulate matter during haze days.The ratio of 4 water-soluble anions in total water-soluble anions in PM2.5at site G was 20.29%,10.16%,9.51% and 4.62%,respectively.While it was 14.41%,30.12%,6.64% and 3.83% at site H.The concentration of NOx-was approximate three times of SO42-at site G,while the concentration of SO42-was about 1.5 times of NOx-at site H.The discrepancy between the two ions indicated that the main pollution sources of the two sampling sites were different,and the traffic volume and vegetation coverage may be the reasons of concentration difference.
【Fund】: 江汉大学工业烟尘和粉尘污染控制湖北省重点实验室开放基金(HBIK2012-2);; 湖北省环境保护厅基金(2012HB05)
【CateGory Index】: X831
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