1 PM2.5 Pollution Characteristics of Key Cities in Beijing-Tianjin-Hebei Region
1.1 Overview
1.2 Sampling program
1.2.1 Sampling sites
1.2.2 Sampling method and equipment
1.2.3 Chemical analysis and methods
1.3 PM2.5 and its component characteristics in different city of region
1.3.1 The characteristics of elements and water soluble ions
1.3.2 OC and EC pollution characteristics
1.3.3 PM2.5 chemical balance
1.4 PM2.5 chemical composition analysis in different functional subdivisions in Tangshan
1.4.1 The variations of PM2s mass concentration
1.4.2 Characterization of inorganic elements in PM2.5
1.4.3 Secondary water soluble ions (SWSI)
1.4.4 Carbon species in PM2.5 samples
1.4.5 PM2.5 mass balance
1.5 Conclusions
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