Chemical vapour generation of silver: reduced palladium as permanent reaction modifier for enhanced performance

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DOIResolve DOI: http://doi.org/10.1039/b403189j
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TypeArticle
Journal titleJournal of Analytical Atomic Spectrometry
ISSN0267-9477
Volume19
Issue8
Pages10141016; # of pages: 3
AbstractPermanent modification of the surface of a continuous flow system by reduced metals was studied for chemical vapour generation (CVG) of silver. Both nickel and palladium were found to be active, but only palladium has sufficient stability and chemical resistance for routine use. Single introduction of the modifier to the CVG system is sufficient to avoid long conditioning periods following cleaning and to achieve permanent stabilization of the sensitivity for Ag at a value 3–4-fold higher than in a clean system prior to modification. A possible mechanism responsible for improvement is proposed: the modifier catalyzes the reaction of residual NaBH4 in the reaction mixture, necessary for the final phases of volatile compound formation and/or its release from solution.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10391186
NRC number662
NPARC number8899596
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Record identifierb74d8731-46b1-480c-a6bd-9ee2c7b341e2
Record created2009-04-22
Record modified2016-05-09
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