Determination of trace metals in seawater by graphite furnace atomic absorption following on-line separation and preconcentration

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DOIResolve DOI: http://doi.org/10.1016/0584-8547(93)80010-R
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TypeArticle
Journal titleSpectrochimica Acta Part B: Atomic Spectroscopy
ISSN05848547
Volume48
IssueJanuary 1
Pages9198; # of pages: 8
AbstractA discontinuous microscale preconcentration system, based on the chelation of trace metals by a 20 μl column of silica-immobilized 8-hydroxyquinoline, was interfaced with a graphite furnace atomic absorption spectrometer. Volume-based loading of 835-5000 μl sample loops, followed by elution of the sequestered elements directly into the furnace in 48 μl of acid, provided quantitative recovery of Fe, Cd, Zn, Cu, Ni, Mn and Pb from open ocean seawater with a frequency of 10–20 per hour. Absolute detection limits were 0.3, 6.9, 4.2, 1.8, 10.2, 5.7 and 1.8 pg for Cd, Cu, Fe, Mn, Ni, Pb and Zn, respectively. The sensitivity of the graphite furnace technique is enhanced up to 250-fold compared to a standard 20 μl injection volume. Results are presented for the analysis of these elements in NRCC seawater Reference Materials NASS-3 and CASS-2 using simple calibration curves for quantitation.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedNo
Identifier10274169
NRC number1234
NPARC number8896955
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Record identifierb7c54466-ac24-407d-b002-a0128148b1be
Record created2009-04-22
Record modified2016-05-09
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