Ionic liquids as mobile phase additives for determination of thiocyanate and iodide by liquid chromatography
作者： Ge Cui , Hong Yu , Ya‐jie Ma
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摘要: An analytical method was developed for the simultaneous determination of thiocyanate and iodide by reversed-phase liquid chromatography with UV detection using imidazolium ionic liquids as mobile phase additives. The chromatographic behaviors two anions on a C18 column were studied compared four types reagents including liquids, pyridinium 4-aminophenol hydrochloride tetrabutylammonium effects concentrations organic solvents wavelength separation investigated. role retention rules mechanisms discussed. performed reserved-phase acetonitrile-0.3 mmol/L 1-amyl-3-methylimidazolium tetrafluoroborate (10:90, v/v) phase, temperature 35°C, flow rate 1 mL/min 210 nm. Under these conditions, can be completely separated within 6 min. limits 0.05 mg/L. applied in samples drugs, spiked recoveries ranged from 97 to 101%. is simple, accurate meets requirements quantitative analysis iodide.
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