Levels, Chemical Compositions, and Sources of PM2.5 of Rural and Urban Area under the Impact of Wheat Harvest

Wheat harvesting significantly alters the characteristics of PM2.5 in both rural regions and the adjacent urban areas. We conducted a systematic PM2.5 sampling campaign at two sites, one rural (ARS) and the other urban (UA), in the center of the Beijing-Tianjin-Hebei megalopolis during and after the...

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