异丙基甲苯异构体的快速气相色谱分析

RAPID ANALYSIS OF CYMENE ISOMERS BY GAS CHROMATOGRAPHY

用气相色谱分离 ,热导池检测器测定了甲苯介质中异丙基甲苯同分异构体 ,难分离物质对的分离度大于1 ,分析时间小于 6min。对实际样品进行了测定 ,与其它方法结果相符 ,异丙基甲苯含量 68.65%的试样测定8次 ,计算其 RSD为 0 .6%。

Cymenes have been separated from the tuluene medium by GC and determined with a TCD detecter. The resolution for the most difficult separated subject pair is bigger than 1. The analytical time is shortter than 6min. The method has been applied to the analysis of real samples, the results obtained were in agreement with other methods. The RSD (n=8) for a sample containing 68.85% cymenes was 0.6%.