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PM2.5 was collected at Shanghai urban and suburban sites from April 2005 to March 2006. ICP-AES (inductively coupled plasma-atomic emission spectrum) was used to investigate mass concentration of 17 elements (K, Na, Ca, Mg , As, Cu, Zn, Pb, Cd, Cr, Al, Fe, Mn, Ba, Sr, Ni, Se) in whole sample and soluble fraction of Shanghai PM2.5. Our results claimed total elements in Shanghai PM2.5 increased gradually...
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