Citation: LI Meng, YU Hong, ZHENG Xiurong. Simultaneous analysis of iodate, iodide, bromate and bromide by ion chromatography with ultraviolet detection[J]. Chinese Journal of Chromatography, ;2014, 32(3): 299-303. doi: 10.3724/SP.J.1123.2013.11002 shu

Simultaneous analysis of iodate, iodide, bromate and bromide by ion chromatography with ultraviolet detection

1.
College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China

Corresponding author: YU Hong,
Received Date: 4 November 2013
Available Online: 12 December 2013
Fund Project: 黑龙江省教育厅科学技术研究项目(12531192). (12531192)

An analytical method of ion chromatography with ultraviolet detection has been developed and applied for the simultaneous determination of iodate, iodide, bromate and bromide. The separation was performed on a quaternary ammonium type anion exchange column with citric acid and acetonitrile as mobile phase. The effects of the detection wavelength, the kind and concentration of the mobile phase and other parameters on separation and detection of the four ions were investigated. The retention rules were studied and the chromatographic conditions were optimized. Under the conditions of 210 nm as detection wavelength, 0.9 mL/min as flow rate, 40 ℃ as column temperature, and 1.0 mmol/L citric acid-acetonitrile (85:15, v/v; pH 5.0) as mobile phase, the four ions were completely separated and the system peaks and other common anions didn't interfere with the determination. The detection limits of the four ions (S/N=3) were 0.07-0.16 mg/L. The relative standard deviations of the retention times and peak areas obtained by determining samples five times continuously were below 1%. The spiked recoveries of the four anions were from 98.0% to 102%. This method has been successfully used to determine ionic liquids synthesized by chemistry laboratory and underground water samples. The results were accurate and reliable.
- ion chromatography (IC),
- ultraviolet detection (UV),
- iodate,
- iodide,
- bromate,
- bromide,
- ionic liquid
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沈阳化工大学材料科学与工程学院沈阳 110142