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