Journal of Automated Methods and Management in Chemistry 
Volume 22 (2000), Issue 2, Pages 33-39
doi:10.1155/S1463924600000043

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

E. Moreno,1 C Cámara,1 W. T. Corns,2 D. W. Bryce,2 and P. B. Stockwell2

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

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.