Abstract
Selective procedures for determination of As(iii), As(v), DMA and MMA directly by HG-ICP OES were evaluated.
Highlights
Arsenic may exist in various chemical forms, having different toxicities ranging from highly hazardous inorganic arsenicals, i.e. arsenite [As(III)] and arsenate [As(V)], to relatively harmless organic forms (o-As), i.e. monomethylarsonate (MMA) and dimethylarsinate (DMA)
The most popular strategy for speciation of toxic As forms is based on their chromatographic separation and detection using spectrometric detectors, i.e. inductively coupled plasma mass spectrometry (ICP MS), ICP optical emission spectrometry (ICP OES), atomic absorption spectrometry (AAS) or atomic uorescence spectrometry (AFS), Wroclaw University of Technology, Faculty of Chemistry, Division of Analytical Chemistry and Chemical Metallurgy, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland
To investigate the suitability of hydride generation (HG)-ICP OES for As speciation, the signals acquired for the As(III), As(V), DMA and MMA single-species standard solutions were monitored under various HG reaction conditions related to the combined NaBH4–acid system
Summary
Arsenic may exist in various chemical forms, having different toxicities ranging from highly hazardous inorganic arsenicals (iAs), i.e. arsenite [As(III)] and arsenate [As(V)], to relatively harmless organic forms (o-As), i.e. monomethylarsonate (MMA) and dimethylarsinate (DMA). Application of HG in the sample introduction step can satisfy
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