The invention relates to a method for purifying a gas mixture G-0 containing dinitrogen monoxide, at least comprising: the absorption of the gas mixture G-0 in an organic solvent, followed by; the desorption of a gas mixture G-1 from the loaded organic solvent; the absorption of the gas mixture G-1 in water and subsequently; the desorption of a gas mixture G-2 from the loaded water, and to the use of a purified gas mixture containing dinitrogen monoxide that can be obtained according to a method of the aforementioned type as oxidizing agents for olefins.
