Flow-Injection Spectrophotometric Determination of Cysteine in Biologically Active Dietary Supplements
| Autor: | Koji Nakano, Leonid Moskvin, Andrey Bulatov, A. B. Vishnikin, Ryoichi Ishimatsu, Toshihiko Imato, Anastasiia V. Petrova |
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| Rok vydání: | 2016 |
| Předmět: |
Detection limit
Flow injection analysis Analyte Chromatography medicine.diagnostic_test 010401 analytical chemistry Biological activity 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences High-performance liquid chromatography 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound chemistry Spectrophotometry medicine Ammonium 0210 nano-technology Cysteine |
| Zdroj: | Journal of Analytical Chemistry. 71:172-178 |
| ISSN: | 1608-3199 1061-9348 |
| DOI: | 10.1134/s1061934816020118 |
| Popis: | A procedure is developed for the flow-injection spectrophotometric determination of cysteine in dietary supplements based on the formation of a reduced phosphomolybdic complex by the analyte in mixing a sample solution with a solution of ammonium 18-molybdophosphate. For the flow-injection determination of cysteine, a polymethyl methacrylate chip is fabricated, in the channels of which the analytical form was obtained and detected. The detection limit for cysteine is 3 × 10–6 M and the throughput is 240 determinations per hour. The procedure was tested in the analysis of different samples of dietary supplements; the results obtained were verified by HPLC. |
| Databáze: | OpenAIRE |
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