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Determination of major antimony species in seawater by continuous flow injection hydride generation atomic absorption spectrometry

Abstract : The capabilities and limitations of the continuous flow injection hydride generation technique, coupled to atomic absorption spectrometry, for the speciation of major antimony species in seawater, were investigated. Two pre-concentration techniques were examined. After continuous flow injection hydride generation and collection onto a graphite tube coated with iridium, antimony was determined by graphite furnace atomic absorption spectrometry. The low detection limits obtained (∼5ngl-1 for Sb(III) and ∼10ngl-1 for Sb(V) for 2.5ml seawater samples) permitted the determination of Sb(III) and total antimony in seawater with the use of selective hydride generation and on-line UV photooxidation. The number of samples that can be analyzed is about 15 per hour for Sb(III) determinations and 10 per hour for total antimony determinations. The analysis of seawater samples showed that Sb(V) was the predominant species, even in the presence of important biological activity. © 2003 Elsevier B.V. All rights reserved.
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Submitted on : Wednesday, April 11, 2018 - 2:58:35 PM
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Jean Yves Cabon, C.L. Madec. Determination of major antimony species in seawater by continuous flow injection hydride generation atomic absorption spectrometry. Analytica Chimica Acta, Elsevier Masson, 2004, 504 (2), pp.209-215. ⟨10.1016/j.aca.2003.10.048⟩. ⟨hal-01763878⟩

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