PAH VOC As As in PM10 Black smoke C6H6 Ca++ Cd Cd in PM10 Cl- Co in PM10 Cr in PM10 Cu in PM10 EC in PM10 HNO3+NO3 Hg0 + Hg-reactive K+ Mg++ Mn in PM10 NH3+NH4 NO2 NOX as NO2 Na+ Ni Ni in PM10 O3 OC in PM10 PM10 PM2.5 Pb Pb in PM10 SO2 SO4 (H2SO4 aerosols) (SO4--) V in PM10 Zn in PM10