A mathematical model previously developed by us for the absorption of NOx into nitric acid solutions containing hydrogen peroxide at 20 degrees C was adapted to take the effect of temperature into account. It was used to determine at 10 and 30 degrees C the overall kinetic parameters relative to the absorption of the different NOx species, for increasing HNO3 molarities (up to 2 M) and a low concentration of H2O2 (0.02 M), from test runs performed in a small packed column. The interpretation of the experimental. results obtained at 10 and 30 degrees C according to the model confirmed the previous findings : hydrolysis is the main controlling step for tetravalent nitrogen oxides, and nitrous acid is likely to contribute for the most part to the absorption of trivalent species.