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高效液相色谱－毛细管气相色谱的联机技术(LC－GC)具有对样品进行净化、富集、预分离和高效分离的功能.这种二维色谱与傅里叶变换红外光谱的联用技术(LC－GC/FTIR)可明显提高常规GC/FTIR系统对复杂有机混合物中微量组分的分析检测能力.该文报道了在一种以带有早期溶剂蒸气出口的保留间隙技术和阀切换以及定量管样品转移技术为LC－GC接口的LC－GC/FTIR系统上,以正己烷/二氯甲烷(85/15)为LC流动相,在溶剂蒸发温度75℃,进样压力0.20MPA等条件下对丙二酸二乙酯中二乙烯苯类污染物的分析.“,”In some cases,the use of conventional GC/FTIR technique is limited due to its lower detectability to micro components in organic mixtues in comparison to GC/MS In this paper, an integration of LG/GC using retention gap technique with partially concurrent solvent evaporation,as a efficient chromatographic system for sample preconcentration and preseparation, was coupled into FTIR system in order to overcome the detectability problems of GC/FTIR...