冷柱头进样-高温气相色谱法测定重烷基苯中烷基苯的含量

介绍了一种分析、测定烷基化副产物——重烷基苯中烷基苯含量的新方法。该方法采用冷柱头进样方式,利用一根长30 m的HT-5毛细管色谱柱将样品充分分离,采用外标法对重烷基苯中烷基苯进行定性、定量。实验结果表明,该方法的收率为96.40%,标准偏差为1.54,变异系数为3.60%,这些分析数据具有较好的准确度和可信度;同时,该分析方法也不失为一种实用、有效的测定重组分液体石油产品组成的方法。

Cold on-column injection - high temperature GC method analysing LAB's contents in HAB

A method of High Temperature Gas chromatographic （HTGC）was used for analyzing the contents of LAB in HAB. Samples can be completely separated in condition of a capillary column of HT - 5 combined with injection of cold on - column . External standard method was used for qualitativing and quantitativing analysis. Experi ments of relative standard deviation （RSD） and average recovery rate （ARR） for accuracy of the method were carried out and showed that RSD was 0. 0028% and ARR 98.8%, Which means that this method is practically satisfactory.