Liquid chromatography-hydride generation-atomic fluorescence spectrometry hybridation for antimony speciation in environmental samples |
| |
Authors: | Viñas Pilar López-García Ignacio Merino-Meroño Beatriz Hernández-Córdoba Manuel |
| |
Institution: | Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, Campus of Espinardo, E-30071 Murcia, Spain |
| |
Abstract: | Atomic fluorescence spectrometry was used as an element-specific detector in hybridation with liquid chromatography (LC) and hydride generation for the speciation of Sb(III), Sb(V) and trimethylantimony dichloride (TMSbCl2). The three species were poorly resolved in a single chromatogram but good results were obtained by anion-exchange chromatography, using a mobile phase with 20 mM EDTA and 8 mM hydrogenphthalate to separate Sb(III) and Sb(V) and 1 mM carbonate at pH 10 to separate Sb(V) and TMSbCl2. Calibration graphs were linear between 2 and 100 μg l−1. Detection limits were 0.9, 0.5 and 0.7 μg l−1 for Sb(III), Sb(V) and TMSbCl2, respectively. The method was applied to the speciation of antimony in environmental samples. |
| |
Keywords: | Antimony speciation Liquid chromatography Hydride generation-atomic fluorescence spectrometry Environmental samples |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|