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Comparisons of Urinary Arsenic Analysis by Pre-reductant for Preconditioning via the FI-HG-AAS Method
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 Title & Authors
Comparisons of Urinary Arsenic Analysis by Pre-reductant for Preconditioning via the FI-HG-AAS Method
Choi, Seung-Hyun; Choi, Jae Wook; Cho, YongMin; Bae, Munjoo;
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 Abstract
Objectives: The method of analyzing urinary arsenic by flow injection hydride generation atomic absorption spectrometry (FI-HG-AAS) is generally used because it shows relatively greater sensitivity, low detection limits, low blocking action, and is simple to operate. In this study, the results of analysis according to three pre-reductants commonly used in the FI-HG-AAS method were compared with each other. Methods: To analyze urinary arsenic, nineteen urine samples were collected from adults aged 43-79 years old without occupational arsenic exposure. Analysis equipment was FI-HG-AAS (AAnalyst 800/FIAS 400, Perkin- Elmer Inc., USA). The three pre-reductants were potassium iodide (KI/AA), C3H7NO2S (L-cysteine), and a mixture of KI/AA and L-cysteine (KI/AA&L-cysteine). Results: In the results of the analysis, the recovery rate of the method using KI/AA was 82.3%, 95.7% for Lcysteine, and 123.5% for KI/AA and L-cysteine combined. When compared with the results by use of high performance liquid chromatography inductively-coupled plasma mass spectrometry (HPLC-ICP-MS), the method using L-cysteine was the closest to those using HPLC-ICP-MS ( for HPLC-ICP-MS; for L-cysteine; for KI/AA and L-cysteine; for KI/AA) and were significantly correlated (R2
 Keywords
Hydride Generation atomic absorption spectrometry;KI/ascorbic acid;L-cysteine;Pre-reductant;Urinary arsenic;
 Language
Korean
 Cited by
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