On-line photodecomposition for the determination of antimony species
On‐line UV photooxidation by peroxodisulfate was coupled to ion chromatography hydride generation atomic fluorescence spectroscopy (IC‐UV‐HG‐AFS) for the speciation of inorganic antimony [Sb(III) and Sb(V)] and methylated species. Several parameters (UV lamp, irradiation time and peroxodisulfate con...
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Published in | Applied organometallic chemistry Vol. 20; no. 1; pp. 12 - 19 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Chichester, UK
John Wiley & Sons, Ltd
01.01.2006
Wiley |
Subjects | |
Online Access | Get full text |
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Summary: | On‐line UV photooxidation by peroxodisulfate was coupled to ion chromatography hydride generation atomic fluorescence spectroscopy (IC‐UV‐HG‐AFS) for the speciation of inorganic antimony [Sb(III) and Sb(V)] and methylated species. Several parameters (UV lamp, irradiation time and peroxodisulfate concentration) that greatly influence the sensitivity of these three antimony species were investigated in depth. Under optimized conditions, photodecomposition resulted in an improvement in methylantimony species sensitivity. Dilution in di‐ammonium tartrate medium was necessary in order to ensure short‐term stability of Sb(III) at the µg l−1 concentration level. Furthermore, the efficiency of irradiation was strongly dependent on the chemical composition of the measured solution. Detection limits of 0.04 µg l−1 for Sb(V), 0.03 µg l−1 for Me3SbCl2 and 0.03 µg l−1 for Sb(III) as well as repeatability and reproducibility better than 4 and 8% RSD, respectively, were obtained. The proposed methodology was applied for antimony speciation in terrestrial plant sample extracts. Copyright © 2005 John Wiley & Sons, Ltd.
On‐line UV photooxidation by peroxodisulfate was coupled to ion chromatography hydride generation atomic fluorescence spectrometry (IC‐UV‐HG‐AFS) for the speciation of antimony. Under optimised conditions, the photodecomposition resulted in an improvement in methylantimony species sensitivity. |
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Bibliography: | ark:/67375/WNG-RPLLZ81K-3 DGICYT - No. BQU2003-02951. ArticleID:AOC1007 istex:F8E0950FC56F3D8C685C3DA61933D514E25584FD ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0268-2605 1099-0739 |
DOI: | 10.1002/aoc.1007 |