Evaluation of high-performance liquid chromatography for the separation and determination of arsenic species by on-line high-performance liquid chromatographic-hydride generation-atomic absorption spectrometry |
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| Affiliation: | 1. Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran;2. Extremophiles Laboratory, Department of Microbiology, Faculty of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Iran;3. Dietary Supplement and Probiotic Research Center, Alborz University of Medical Sciences, Karaj, Iran;1. Fisheries College, Jimei University, Xiamen, 361021, China;2. Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China;3. College of Life Sciences, Hebei University, Baoding, 071000, China;1. Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA;2. Department of Environmental Health & Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA;3. Fundación Investigación Clínico de Valencia-INCLIVA, Area of Cardiometabolic and Renal Risk, Valencia, Valencia, Spain;4. University of Valencia, Department of Statistics and Operational Research, Valencia, Valencia, Spain;5. MedStar Health Research Institute, Hyattsville, MD, USA;6. Department of Medicine, Georgetown University School of Medicine, Washington, DC, USA;7. Missouri Breaks Industries Research, Inc., Eagle Butte, SD, USA;8. Institute of Chemistry – Analytical Chemistry, University of Graz, Austria;9. Baylor Scott & White Research Institute, Dallas, TX, USA;10. Texas Biomedical Research Institute, San Antonio, TX, USA;11. College of Public Health and Health Professions and the College of Medicine at the University of Florida, Gainesville, FL, USA;1. Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China;2. School of Chemistry and Environment, Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou, 363000, China;3. Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, United States |
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| Abstract: | An on-line high-performance liquid chromatographic-microwave assisted oxidation-hydride generation-atomic absorption spectrometric (HG-AAS) system (using columns of different kinds) has been developed for the determination of arsenite, arsenate, dimethylarsinate (DMA), monomethylarsonate (MMA), arsenobetaine (AsB) and arsenocholine (AsC) in environmental samples. Ion-pair reversed-phase chromatography using tetrabutylammonium phosphate as the ion-pair reagent and anion-exchange chromatography were evaluated and the analytical performances of each are reported. The detection limits were 97–143 and 10–30 μg l−1 for ion-pair reversed-phase and anion-exchange chromatography, respectively. The Hamilton PRP-X 100 anionic column was proposed for the determination of the six species; AsB can be quantitated independently of AsC by taking the difference between readings at pH 6 and pH 10.7. The proposed methods were applied to water samples and sediments and their potential for future application was demonstrated. |
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