Evaluation of electrochemical hydride generation for the determination of total antimony in natural waters by electrothermal atomic absorption spectrometry with in situ concentration

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DOIResolve DOI: http://doi.org/10.1039/JA9961100225
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TypeArticle
Journal titleJournal of Analytical Atomic Spectrometry
ISSN0267-9477
Volume11
Issue3
Pages225230; # of pages: 6
AbstractA continuous-flow (timed injection) electrochemical hydride generation system was developed for the determination of total Sb in river water and sea-water. Lead was used as cathode material for the production of stibine. Both SbIII and Sbv were equally converted into their hydrides by electrochemical means with 92 ± 4% efficiency. The hydride was trapped in a Pd-coated graphite furnace prior to atomization. An absolute detection limit of 45 pg (3sblank) and a concentration detection limit of 0.02 µg l–1 were obtained using 2 ml sample volumes. The precision of replicate measurements at the 0.2 µg l–1 level (0.5 ng absolute mass level) was better than 6% relative standard deviation. The accuracy of the approach was verified through the analysis of National Research Council of Canada certified reference materials SLRS-2 and SLRS-3 River Water and NASS-4 Open Ocean Sea-water.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedNo
Identifier10391186
NRC number1272
NPARC number8899713
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Record identifierb7944cf5-3408-4ba0-9ca8-c5b79911998f
Record created2009-04-22
Record modified2016-05-09
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