Arsenic speciation in beverages by direct injection-ion chromatography hydride generation atomic fluorescence spectrometry

Author： Moreno E.   Corns W. T.   Bryce D. W.   Stockwell P. B.  

Publisher： Taylor & Francis Ltd

ISSN： 1464-5068

Source： Journal of Automated Methods & Management in Chemistry, Vol.22, Iss.2, 2000-03, pp. : 33-39

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Abstract

The procedure developed allows the direct speciation of arsenic in these samples with good sensitivity, selectivity, precision and accuracy. Detection limits determined using the optimized conditions were found to be between 0.16 and 2.9ng ml–1 for arsenite, dimethylarsinic acid, monomethylarsonic acid and arsenate, while standard addition studies showed that the procedure is free from matrix interferences. As no certified reference materials are available for these analytes or matrices, validation was carried out by studying spike recoveries and by comparison of results with an alternative technique.

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