分析测试学报Issue(9)：1026-1031,6.DOI:10.3969/j.issn.1004-4957.2014.09.007
以咪唑离子液体为紫外吸收试剂的高效液相色谱/间接紫外检测法分离测定烷基磺酸盐
Determination of Alkyl Sulfonates by High Performance Liquid Chromatography/Indirect Ultraviolet Detection with Imidazolium Ionic Liquids as Ultraviolet Absorption Reagent
摘要
Abstract
A novel analytical method was developed for the determination of alkyl sulfonates by high performance liquid chromatography -indirect ultraviolet detection using imidazolium ionic liquid as the background ultraviolet absorption reagent without ultraviolet absorption. Chromatographic separa-tion was performed on a reversed-phase C18 column using imidazolium ionic liquid-organic solvent as mobile phase. Effects of detection wavelength,kinds and concentrations of organic solvents and imi-dazolium ionic liquids,and other parameters on the separation and determination of alkyl sulfonates were investigated. The retention rules of the alkyl sulfonates under different chromatographic condi-tions were discussed and the chromatographic conditions were optimized. The successful separation and detection of two alkyl sulfonates( sodium pentanesulfonate and sodium heptanesulfonate)were a-chieved using the optimized mobile phase of 0. 7 mmol/L 1-ethyl-3-methyl-imidazolium tetrafluorobo-rate( pH 3. 0 , adjusted with 2 mmol/L monosodium phosphate - phosphoric acid )- methanol (55 : 45)at a flow rate of 1. 0 mL/min,a detection wavelength of 210 nm and a column temperature of 30 ℃. Under the optimal conditions,two alkyl sulfonates could be successfully separated in 10 min. The calibration curves showed good linearities in the ranges of 0. 8-200 mg/L and 2. 5-200 mg/L for two alkyl sulfonates,respectively,with correlation coefficients above 0. 999. The detection limits of two alkyl sulfonates were 0. 24 mg/L and 0. 75 mg/L,respectively. The method was applied in the determination of environmental water samples,with spiked recoveries of 98. 3% -99. 1% and relative standard deviations less than 1. 5% . The method was simple,accurate and reliable,and could meet the requirements for quantitative analysis.关键词
高效液相色谱法/间接紫外检测/烷基磺酸盐/咪唑离子液体Key words
high performance liquid chromatography/indirect ultraviolet detection/alkyl sulfonates/imidazolium ionic liquids分类
化学化工引用本文复制引用
郑秀荣,马亚杰,于泓..以咪唑离子液体为紫外吸收试剂的高效液相色谱/间接紫外检测法分离测定烷基磺酸盐[J].分析测试学报,2014,(9):1026-1031,6.基金项目
黑龙江省自然科学基金（B201307）；黑龙江省教育厅科学技术研究项目 （）
