【摘要】 本文研究了EPMB液晶大孔径毛细管柱与短光管FTIR的联用。实验表明,大孔径毛细管柱与短光管FTIR是完全匹配的,在光管尾吹量为零时,系统可获得最佳分辨。大孔径液晶毛细管柱对芳烃异构体的选择性高,柱容量和载气流量大,因而,特别适用于与FTIR联用分离鉴定芳烃异构体。本文使用的高温液晶EPMB大孔径毛细管柱,能在较低柱温下工作,与FTIR联用成功地分离鉴定了一些单环、双环、三环及四环的芳烃异构体。更多还原

【Abstract】 The coupling of wide bore capillary column using EPMB liquid crystal as stationary phase with Fourier Transform-Infrared of short light-pipe interface is studied. It is shwon that the optimum sensitivity of the system is achieved when no make-up gas of light-pipe is added. The liquid crystalline stationary phases have very gcod selectivity for aromaticisomers. Compared with the convenient capillary column, wide bore liquid crystal capillary column has higher column capacity and higher carrier gas flow. Therefore, good separation of aromatic isomer mixtures can be maintained when the injection volume is increased, which is particularly helpful for the GC/FT-IR system to separate and identify aromatic isomer mixtures.更多还原