Influence of plasma gas composition on analyte ionization in furnace atomization plasma emission spectrometry

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DOIResolve DOI: http://doi.org/10.1039/a900273a
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TypeArticle
Journal titleJournal of Analytical Atomic Spectrometry
ISSN0267-9477
Volume14
Issue6
Pages901912; # of pages: 12
AbstractTemporally and spatially integrated measurements of the intensities of a number of atomic and ionic lines of several elements (Cr, Mn, Mg, Co, Fe, Cd and Zn) were used to calculate their degree of ionization in He, Ar and He-Ar mixed gas plasmas in a radiofrequency (rf) furnace atomization plasma emission spectrometry (FAPES) source. The effects of rf power and plasma gas flow rate were also investigated. The emission intensities of ionic and atomic lines and the degree of analyte ionization are enhanced as Ar is added to the He plasma. Maximum degrees of ionization of 99, 80, 81, 72, 76, 12 and 38% for Cr, Mn, Mg, Co, Fe, Cd and Zn, respectively, were obtained in pure Ar. The mechanism of analyte ionization and excitation is discussed.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10391186
NRC number193
NPARC number5764272
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Record identifier4fc70e89-6010-414e-9a48-494e0bc032c0
Record created2009-03-29
Record modified2016-05-09
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