METHOD FOR MEASURING THE CONCENTRATION OF WATER IN ARGON, HYDROGEN, NITROGEN AND HELIUM BY MEANS OF IONIZATION MOBILITY SPECTROMETRY

摘要

It is a kind of by ionization mobility spectroscopy measure higher concentration water in argon gas, hydrogen, nitrogen and helium, be characterized in that including following operating procedure: being added to and enter IMS instruments (10) and reflux amount ofpure gases with reflux pure gas gas to be analyzed; It obtains signal (19) and passes through the IMS instruments (10) ion detector (14) detected in time and variable number proportional ion; - two time intervals (A, B group) correspond to the IMS instruments (10) of drift time H30+ and) 2 (H 20? + ion; Obtain the peak value of the signal (19) two determining time intervals (, B; It calculates about in water concentration gas to be analyzed, according to the intensity ratio signal (19) at two peaks obtained in 15.