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[Wiley数据库][2011]Novel approach to improve the detection of colchicine via online coupling of ionic l
发布时间:2016-01-25 15:45:37 阅读次数:
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题名
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[Wiley数据库][2011]Novel approach to improve the detection of colchicine via online coupling of ionic liquidbased single-drop microextraction with capillary electrophoresis
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参考引用方式
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Qing Wang, Hongdeng Qiu, Jing Li, Haifeng Han, Xia Liu, Shengxiang Jiang. J. Sep. Sci. 2011, 34, 594–600594
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研究机构
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中国科学院兰州化学物理研究所
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所涉及离子液体
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研究领域
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秋水仙素检测；基于离子液体的单液滴微萃取；毛细管电泳
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论文摘要
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A novel approach based on ionic liquid-single-drop microextraction (IL-SDME) online coupling with capillary electrophoresis (CE) was used to determine a toxic alkaloid – colchicine. The IL-SDME procedure was optimized by extraction solvent, drop volume controlling, sample volume and pH, extraction time, and ionic strength. Under optimum conditions, enrichment factor was as much as 41-fold with a relative standard deviation of 2.8% (n53). Linear range of response was observed from 1 to 100 mg/mL, with detection limit of 0.25mg/mL and correlation coefficient (R2) of 0.9994. The extraction of colchicine from spiked Lanzhou lily sample was performed and obtaining good result with an average recovery rate of 102.4 and 98.8% at 5 and 50mg/mL, respectively. Comparing with the previous methods, IL-SDME-CE is really a convenient, economical, and environmentally benign way for determining colchicine.
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关键词
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capillary electrophoresis / colchicine / ionic liquid / online coupling / single-drop microextraction
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