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Journal of Automated Methods and Management in Chemistry
Volume 22, Issue 2, Pages 33-39
http://dx.doi.org/10.1155/S1463924600000043

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

1University of Complutense, Madrid, Spain
2PS Analytical, Arthur House, Crayfields Industrial Estate, Main Road Orpington, Kent BR5 3HP, UK

Copyright © 2000 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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 2.9 ng 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.