Sequestration of volatile element hydrides by platinum group elements for graphite furnace atomic absorption

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DOIResolve DOI: http://doi.org/10.1016/0584-8547(89)80065-5
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TypeArticle
Journal titleSpectrochimica Acta Part B: Atomic Spectroscopy
ISSN05848547
Volume44
Issue7
Pages667682; # of pages: 16
AbstractEfficient trapping of the volatile hydrides of As, Sb, Se, Bi and Sn on μg masses of Pd and other platinum group metals (PGM) reduced in the graphite furnace occurs at a relatively low temperature (200°C). Analytical figures of merit are improved over hydride trapping on the bare tube wall. Conditions are established for multielement sequestration. Absolute limits of detection (3σ) range between 8 pg (Se) and 43 pg (As). The catalytic reactivity of PGM's promotes low temperature deposition of the hydrides by dissociative chemisorption. Thermal desorption of all analytes from the PGM's is first order. Arrhenius energies were used to characterize all analyte-substrate interactions.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedNo
Identifier10274169
NRC number1228
NPARC number8898837
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Record identifier2ba1c54e-5ff2-45a8-82b4-23ece4225f6e
Record created2009-04-22
Record modified2016-05-09
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