Determination of cadmium in environmental samples by hydride generation with in situ concentration and atomic absorption detection

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DOIResolve DOI: http://doi.org/10.1039/a606747f
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TypeArticle
Journal titleAnalyst
ISSN0003-2654
Volume122
IssueApril 4
Pages331336; # of pages: 6
AbstractA volatile Cd species (presumed to be the hydride) was generated from aqueous solutions by merging sample and tetrahydroborate reductant in a continuous-flow system. The gaseous analyte was transferred onto the inner wall of a graphite tube furnace for in situ preconcentration at 200 °C. Calibration was achieved via the method of standard additions. An absolute detection limit (3ς blank ) of 10 pg was obtained using KBH 4 as reductant. The precision of the determination was 12% (RSD) for a Cd concentration of 0.2 ng ml - 1 using KBH 4 . The method was successfully applied to the determination of Cd in several certified environmental reference materials (soil, sediment, sea-water, biological samples) following pressure digestion of the samples by microwave heating in a mixture of acids.
Publication date
LanguageEnglish
AffiliationNRC Institute for National Measurement Standards; National Research Council Canada
Peer reviewedNo
Identifier10306407
NRC number854
NPARC number8899781
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Record identifier03221f1e-0d11-4026-9c04-3898d578f5ca
Record created2009-04-22
Record modified2016-05-09
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