The HCl+ClONO2 reaction rate on various water ice surfaces
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The reaction ClONO2+HCl → Cl2+HNO3 on ice surfaces was investigated using a fast flow reactor coupled to a chemical ionization mass spectrometer. Rough and relatively smooth ice surfaces and single-crystal ice particles were employed to investigate the effect of the different surface morphologies on the reaction mechanism. Large reaction probabilities (γ>0.1), independent of HCl partial pressure in the range from 2×10-7 to 8×10-6 Torr, were measured on these three ice surfaces. These results are consistent with an ionic reaction mechanism involving HCl solvation on a liquid-like surface layer.
author list (cited authors)
Lee, S., Leard, D. C., Zhang, R., Molina, L. T., & Molina, M. J.