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Measurement of gas kinetic temperatures for polyatomic ions in inductively coupled plasma-mass spectrometry: Validation and refinements

TitleMeasurement of gas kinetic temperatures for polyatomic ions in inductively coupled plasma-mass spectrometry: Validation and refinements
Publication TypeJournal Article
Year of Publication2011
AuthorsMcIntyre SM, Ferguson JW, Witte TM, Houk RS
Journal TitleSpectrochimica Acta Part B-Atomic Spectroscopy
Volume66
Pages248-254
Date Published03
ISBN Number0584-8547
Accession NumberWOS:000292361600005
Abstract

The general method of comparing measured ion ratios to calculated ion ratios to determine a gas kinetic temperature (T(gas)) is reviewed. Various mathematical refinements to the calculated partition functions are examined for their effect on the determined T(gas). It is found that (a) excited electronic states should be included for ArO(+), neutral NO, and O(2); (b) a 10% error in solvent load, sample gas flow rate, vibrational constant (omega), rotational constant (B) or measured ion ratio produces only a 1 to 3% error in T(gas); (c) a 10% error in dissociation energy (D(o)) creates nearly a 10% error in T(gas); and (d) high temperature corrections to the partition functions produce minimal change and can generally be neglected. (C) 2011 Elsevier B.V. All rights reserved.
DOI10.1016/j.sab.2011.02.003