A β-cyclodextrin derivative, perbenzyl-β-cyclodextrin, was prepared and used as a chiral stationary phase for capillary gas chromatography. Using FID detector and the column temperature between 70 and 80℃, the chir...A β-cyclodextrin derivative, perbenzyl-β-cyclodextrin, was prepared and used as a chiral stationary phase for capillary gas chromatography. Using FID detector and the column temperature between 70 and 80℃, the chiral separations of racemic 3-phenyl-1, 2-epoxyethane and 1-phenyl-1-propanol on a 14m×0.23mm I. D. fused silica column with the β-cyclodextrin derivative were carried out and the optical purities of optically active 1-phenyl-1-propanol samples prepared by asymmetric synthesis were determined.展开更多
利用热导检测器（TCD）的原理,将改装后的GC3900T气相色谱仪与SPB-1毛细管柱联用,对尾吹流量、线速度等影响因素进行研究。以氦气作载气,分别利用正庚烷、硝基苯、苯酚、苯胺、乙酸丁酯以及正丁醇作为试样测定联用系统的最佳线速度,并...利用热导检测器（TCD）的原理,将改装后的GC3900T气相色谱仪与SPB-1毛细管柱联用,对尾吹流量、线速度等影响因素进行研究。以氦气作载气,分别利用正庚烷、硝基苯、苯酚、苯胺、乙酸丁酯以及正丁醇作为试样测定联用系统的最佳线速度,并用正庚烷研究了尾吹流量对柱效、信号的影响以及桥流与响应值之间的关系。结果显示,其最佳载气线速范围在15～18 cm/s,合适的尾吹流量为13～14 m L/min,并验证了响应值与桥流的三次方成正比。联用系统已应用于对氢火焰检测器（FID）无响应或响应极小的三氯氢硅和乙烯基三氯硅烷的检测。展开更多
文摘A β-cyclodextrin derivative, perbenzyl-β-cyclodextrin, was prepared and used as a chiral stationary phase for capillary gas chromatography. Using FID detector and the column temperature between 70 and 80℃, the chiral separations of racemic 3-phenyl-1, 2-epoxyethane and 1-phenyl-1-propanol on a 14m×0.23mm I. D. fused silica column with the β-cyclodextrin derivative were carried out and the optical purities of optically active 1-phenyl-1-propanol samples prepared by asymmetric synthesis were determined.
文摘利用热导检测器（TCD）的原理,将改装后的GC3900T气相色谱仪与SPB-1毛细管柱联用,对尾吹流量、线速度等影响因素进行研究。以氦气作载气,分别利用正庚烷、硝基苯、苯酚、苯胺、乙酸丁酯以及正丁醇作为试样测定联用系统的最佳线速度,并用正庚烷研究了尾吹流量对柱效、信号的影响以及桥流与响应值之间的关系。结果显示,其最佳载气线速范围在15～18 cm/s,合适的尾吹流量为13～14 m L/min,并验证了响应值与桥流的三次方成正比。联用系统已应用于对氢火焰检测器（FID）无响应或响应极小的三氯氢硅和乙烯基三氯硅烷的检测。
