Figure 2
From: Mineral dust and NOx promote the conversion of SO2 to sulfate in heavy pollution days
Comparison of integral infrared peak area of sulfate when NO2+SO2 was exposed to the surface of CaO with pure N2 (black solid squares) and synthetic air (80%N2+20%O2) (red hollow squares) as carrier gas.
Reaction conditions: total flow = 100 mL/min; concentrations of SO2 and NO2 both 200 ppm; T = 303 K.
