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A general method for the calculation of absolute trace gas concentrations in air and breath from selected ion flow tube mass spectrometry data
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SYSNO ASEP 0078415 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title A general method for the calculation of absolute trace gas concentrations in air and breath from selected ion flow tube mass spectrometry data Title Obecná metoda výpočtu koncentrací stopových látek ve vzduchu a dechu z dat hmotnostní spektrometrie v proudové trubici s vybranými ionty Author(s) Španěl, Patrik (UFCH-W) RID, ORCID
Dryahina, Kseniya (UFCH-W) RID, ORCID
Smith, D. (GB)Source Title International Journal of Mass Spectrometry. - : Elsevier - ISSN 1387-3806
249-250, - (2006), s. 230-239Number of pages 10 s. Language eng - English Country NL - Netherlands Keywords selected ion flow tube ; mass spectrometry ; SIFT-MS ; trace gas analysis Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA202/03/0827 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40400503 - UFCH-W (2005-2011) Annotation A complete description is presented of a numerical method that allows the calculation, in real time, of absolute concentrations of trace gases, including volatile organic compounds and water vapour, from selected ion flow tube mass spectrometry, SIFT-MS, data. No assumptions are made concerning the SIFT-MS instrument size or its configuration and thus the calculation can be applied to the currently available, relatively large instruments and the anticipated new generation of smaller SIFT-MS instruments. This numerical method clearly distinguishes those parameters that are obviously specific to a particular instrument, including flow tube geometry, degree of mass discrimination in the analytical mass spectrometer and flow tube reaction time, from general fundamental processes, in particular the differential diffusive loss of ions along the flow tube that is dependent on the properties of those ions involved in the determination of the concentrations of particular trace gases. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2007
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