0181193 - UFCH-W 20010107 RIV US eng J - Journal Article
Španěl, Patrik - Smith, D.
On-line Measurement of the Absolute Humidity of Air, Breath and Liquid Headspace Samples by Selected Ion Flow Tube Mass Spectrometry.
Rapid Communications in Mass Spectrometry. Roč. 15, - (2001), s. 563-569. ISSN 0951-4198. E-ISSN 1097-0231
R&D Projects: GA ČR GA203/00/0632
Grant - others:EPSRC(GB) GR/M89195/01
Institutional research plan: CEZ:AV0Z4040901
Keywords : SIFT-MS * hydrated hydronium ions * trace gas analysis
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 2.478, year: 2001

Selected ion flow tube mass spectrometry, SIFT-MS, can be used to determine the absolute humidity of air, breath and liquid headspace samples. This involves the determination of the relative count rates of the H3O+ ions and those H3O+. (H2O)1,2,3 hydrate ions that form in the helium carrier gas when humid samples are being analysed by SIFT-MS using H3O+ precursor ions.
Permanent Link: http://hdl.handle.net/11104/0001871