supported by the Special Scientific Research Funds for Environment Protection Commonweal Section (Nos.201409003,201309011);the National Natural Science Foundation of China (No.41375132);the CAS Strategic Priority Research Program (No.XDB05030400);the National Basic Research Program of China (No.2014CB441203);the Beijing Municipal Science and Technology Plan (No.Z131100006113013)
To elucidate the air pollution characteristics of northern China, airborne PM_10(atmospheric dynamic equivalent diameter ≤ 10 μm) and PM_(2.5)(atmospheric dynamic equivalent diameter ≤ 2.5 μm) were sampled i...