METHOD AND DEVICE FOR DETERMINING THE TOTAL OXYGEN CONTENT AND/OR THE TOTAL CARBON CONTENT IN AMMONIA

摘要

The invention relates to a method for determining the total oxygen content and the total carbon content in ammonia, wherein ammonia is firstly cleaved into nitrogen and hydrogen, then the oxygen still contained in the ammonia reacted with hydrogen to give water and the carbon still contained in the ammonia reacted with hydrogen to give methane, essentially to completion. In a subsequent step, the water content and the methane content of the gas are determined. Finally the determinations of the total oxygen content from the water content and the total carbon content from the methane content are carried out. The invention further relates to a device for carrying out the methods, comprising a cracker for cleaving the ammonia and for reacting the compounds containing oxygen and/or carbon and at least one cavity ring-down spectrometer for recording the water content and/or carbon content. The cracker and the at least one spectrometer and all devices and connector lines between the cracker and the spectrometer are blanketed in an inert gas.