| 高效液相色谱-间接紫外检测法分析吡咯烷离子液体阳离子的研究 |
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| 基金项目:黑龙江省自然科学基金(B201307)；哈尔滨师范大学硕士研究生创新项目(HSDSSCX2018-14)；哈尔滨师范大学实践创新团队项目 |
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| 中文摘要:采用反相C18色谱柱和紫外检测器，建立了吡咯烷离子液体阳离子的高效液相色谱-间接紫外检测分析方法。咪唑离子液体作为流动相的添加剂，既是背景紫外吸收试剂，又是改善分析物分离效果的有效组分。流动相中加入离子对试剂庚烷磺酸钠，可较好地改善吡咯烷离子液体阳离子的分离效果。在最佳色谱条件下，3种吡咯烷离子液体阳离子(［MEPy］+、［MPPy］+和［MBPy］+ )可在13 min内得到有效的分离检测,［MEPy］+、［MPPy］+、［MBPy］+的线性范围分别为0.6~100 mg/L、1.3~230 mg/L和3.6~250 mg/L,相关系数(r)均大于0.999，检出限分别为0.2、0.4、1.1 mg/L。将该方法应用于实验室合成的同系物吡咯烷离子液体样品的检测，加标回收率为92.2%~96.7%。该方法准确、可靠，是一种有效分离和检测吡咯烷离子液体阳离子的实用方法。 |
| 中文关键词:高效液相色谱法 间接紫外检测 吡咯烷阳离子 离子对试剂 咪唑离子液体 |
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| Study on Analysis of Pyrrolidinium Ionic Liquid Cations by High Performance Liquid Chromatography with Indirect Ultraviolet Detection |
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| Abstract:A high performance liquid chromatography with indirect ultraviolet detection was developed for the determination of pyrrolidinium ionic liquid cations by using reversed phase C18 column and UV detector.As an additive of mobile phase,imidazolium ionic liquid is not only a background ultraviolet absorption reagent,but also an effective component for improving the separation of the analytes.The addition of the ion pairing reagent sodium heptanesulfonate to the mobile phase could better improve the separation of cations in the pyrrolidinium ionic liquid.Under the optimal chromatographic conditions,the three pyrrolidinium ionic liquid cations(［MEPy］+,［MPPy］+ and ［MBPy］+) could be effectively separated and detected within 13 min.The linear ranges for ［MEPy］+,［MPPy］+ and ［MBPy］+ were 0.6-100 mg/L,1.3-230 mg/L and 3.6-250 mg/L,respectively,with their correlation coefficients(r) more than 0.999.The detection limits for three analytes were 0.2,0.4,1.1 mg/L,respectively.The method was applied in the detection of homologue pyrrolidinium ionic liquid samples synthesized in laboratory with spiked recoveries of 92.2%-96.7%.The method is accurate and reliable,and is suitable for the separation and detection of pyrrolidinium ionic liquid cations. |
| Key Words:high performance liquid chromatography indirect ultraviolet detection pyrrrolidinium cations ion pair reagents imidazolium ionic liquids |
| 引用本文：温欣竹，张小东，安莹，于泓.高效液相色谱-间接紫外检测法分析吡咯烷离子液体阳离子的研究[J].分析测试学报,2019,38(1):97-101. |
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