Chemical vapor generation: Atomic absorption by Ag, Au, Cu, and Zn following reduction of aquo ions with sodium tetrahydroborate (III)

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DOIResolve DOI: http://doi.org/10.1021/ac000221n
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TypeArticle
Journal titleAnalytical Chemistry
ISSN00032700
Volume72
IssueAugust 1 15
Pages35233531; # of pages: 9
AbstractVolatile species of Ag, Au, Cu, Zn, Cd, and As were generated at room temperature by the addition of sodium tetrahydroborate(III) to an acidified solution of the analytes. The vapor-phase species were rapidly transported to a heated quartz tube atomizer (QTA) for detection by atomic absorption spectrometry. A univariate approach was used to achieve optimized conditions and derive analytical figures of merit. The analytes are released from solution as molecular species (likely as metal hydrides) and are (partially) atomized in the QTA under nonoptimized conditions. Detection limits range from 1.8 (Zn) to 420 ng (Au). The efficiency of the generation process is estimated to be 92 ± 4% for Au. Loss of analyte during transport to the QTA was minimized through use of the minimum length of narrow-bore Teflon transfer line possible.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10308271
NRC number139
NPARC number8896867
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Record identifierad16649a-c932-4228-b759-74e7cc88f647
Record created2009-04-22
Record modified2016-05-09
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