Kinetics of HOBr uptake on NaBr and NaCl surfaces at varying relative humidity

The uptake kinetics of HOBr on NaBr and NaCl particle film surfaces are studied in a flow reactor coupled with a differentially pumped quadrupole mass spectrometer. The results are interpreted in terms of the mechanism HOBr(ad) + NaX -> BrX + NaOH, which involves the adsorption of HOBr on the surface with the reactions occurring mainly on a NaX surface domain without water coverage at low RH.