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首页> 外文会议>2011 International Symposium on Water Resource and Environmental Protection >Preconcentration and separation of trace acetylspiramycin in environmental samples by use of ionic liquid-(NH4)2SO4 aqueous two-phase flotation system
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Preconcentration and separation of trace acetylspiramycin in environmental samples by use of ionic liquid-(NH4)2SO4 aqueous two-phase flotation system

机译：离子液体-（NH 4 ） 2 SO 4 水溶液两相浮选法对环境样品中的痕量乙酰螺旋霉素进行富集和分离

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Ionic liquid aqueous two-phase flotation (ILATPF) consisting of ionic liquid aqueous two-phase system (ILATPS) and solvent sublation (SS), which is a novel, non-toxic and green sample pretreatment technique coupled with molecular fluorescence spectrophotometry, was developed for the simultaneous separation, enrichment and rapid analysis of acetylspiramycin. In this ILATPF system of 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4)/(NH4)2SO4, the effects of the solution pH, condition for phase separation, sublation time and gas flow rate were investigated and discussed in details, and the optimal conditions for ILATPF were obtained. Under the optimum conditions, this method was successfully applied to analysis of acetylspiramycin in environmental samples with the recovery of 85.8–90.4%, the detection limit of 0.04 µg/mL, and the relative standard deviation of 4 µg/mL for 10 parallel determination was lower than 0.33%. This method showed to be promising for separation and enrichment of trace acetylspiramycin as well as other substances in the environment.
机译：开发了一种由离子液体水两相系统（ILATPS）和溶剂升华（SS）组成的离子液体水两相浮选（ILATPF），这是一种新颖的，无毒的绿色样品预处理技术，并结合了分子荧光分光光度法用于同时分离，富集和快速分析乙酰螺旋霉素。在此ILATPF系统中，四氟硼酸1-丁基-3-甲基咪唑鎓（[Bmim] BF 4 ）/（NH 4 ） 2 SO 4 ，详细讨论了溶液pH值，相分离条件，升华时间和气体流速的影响，并获得了ILATPF的最佳条件。在最佳条件下，该方法成功地用于环境样品中的乙酰螺旋霉素的分析，回收率为85.8–90.4％，检出限为0.04 µg / mL，10次平行测定的相对标准偏差为4 µg / mL。低于0.33％。该方法显示出对环境中痕量乙酰螺旋霉素以及其他物质的分离和富集的前景。

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