A METHOD FOR MEASURING THE CONCENTRATION OF IMPURITIES IN NITROGEN, HYDROGEN AND OXYGEN BY MEANS OF ION MOBILITY SPECTROMETRY

摘要

A method for the quantitative analysis of the impurities content in nitrogen, hydrogen or oxygen by means of ion mobility spectrometry is described. The method involves using pure argon or a mixture, having no impurities, containing argon and the gas to be analyzed, as a counterflow gas in the separation zone of the ion mobility spectrometer.