title: Ion mobility spectrometry for monitoring high-purity oxygen.
abstract: The ability of the ion mobility spectrometry (IMS) technique with a negative corona discharge (CD) ion source to detect trace amounts of impurities in high-purity O(2) has been explored. The processes of the formation of negative ions in negative CD IMS have been studied using the ion mobility spectrometry/mass spectrometry (IMS/MS) technique. The CD IMS and CD IMS/MS spectra of 5.0 and 6.0 oxygen with and without additional purification (CO(2) and H(2)O removal) have been measured. It has been proven that the trace amounts of N(2) in high-purity O(2) can be monitored using the CD IMS and/or CD IMS/MS technique.
authors.affiliation: Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynska dolina F2, 842 48 Bratislava, Slovakia.
authors.forename: Martin
authors.initials: M
authors.lastname: Sabo
authors.forename: Štefan
authors.initials: Š
authors.lastname: Matejčík