Ultra-trace determination of Se in sediments by electrothermal vaporizer-inductively coupled plasma-mass spectroscopy: Use of the ETV as a thermochemical reactor

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DOIResolve DOI: http://doi.org/10.1016/S0584-8547(98)00255-9
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TypeArticle
Journal titleSpectrochimica Acta Part B: Atomic Spectroscopy
ISSN05848547
Volume54
IssueApril 5
Pages443453; # of pages: 11
AbstractThe performance of electrothermal vaporization inductively coupled plasma mass spectrometry (ETV-ICP-MS) was evaluated for the ultra-trace determination of total selenium in sediment reference materials. Citric acid, when combined with an appropriate thermal program, promoted the early release of Se in a molecular form from the graphite surface, effecting a separation of the analyte from the concomitant matrix, thereby demonstrating the use of the ETV as a thermochemical reactor. No special sample pretreatment is needed and an absolute detection limit of 10 pg was achieved. Concentrations of Se in different sediment CRMs were determined and results obtained by both isotope dilution (ID) and standard addition (SA) methodologies were compared and evaluated. Mass bias effects prevented accurate application of ID techniques.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10274169
NRC number178
NPARC number8898921
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Record identifier44448800-742f-4f34-8e8a-50e8f7a6f821
Record created2009-04-22
Record modified2016-05-09
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