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Concentration of black carbon (BC) in PM2.5 was measured continuously with an aethalometer during January 2010 and December 2011 at an urban site in Shanghai, China. The impact of the emission control measures for the 2010 World Expo and the World Expo event itself on the concentration and temporal variation of BC in Shanghai was discussed. The annually averaged BC concentrations in 2010 and 2011...
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