微量沥青族组份的TLC/FID分离分析方法

APPLICATION OF TLC/FID GROUP COMPOSITIONAL ANALYSIS OF MICRO-AMOUNTS OF EXTRACT

余至清

Yu Zhiqing

地质矿产部石油地质中心实验室

Central Laboratory of Petroleum Geology, Ministry of Geology and Mineral Resources

TLC/FID方法的建立,主要根据现行沥青族组份分离过程中的某些局限性,采用薄层色谱(TLC)与氢火焰离子化检测器(FID)相结合,以硅胶或氧化铝吸附剂涂制于TLC烧结棒,点样和色谱展开,在棒架上以恒定的速度移动通过检测器火焰,各组份被自动扫描。该方法简便快速准确,几乎适应于所有低挥发有机化合物的分离分析,特别适用于沥青含量极低的碳酸盐岩样品的分析。

There are certain limitations in present column chromatography for the group compositional analysis of extract.In order to get it improved, a new method which combines Thin Layer Chromatography(TLC)with hydrogen Flame Ionization Detector(FID)was adopted.TLC sintered bar is coated with silica gel or alumina as absorbent. After repeated chromatographic developments, the bar moves through flame detector at a constant rate, and each component is automatcally scanned. This method is quick,precise and especially applicable to the analysis of carbonate rock sample with low extract content. Furthermore, because TLC bar has been burnt on hydrogen flame, the absorbent is reactivated, so that it needn't to be recoated. The sintered bar can be repeatedly used for about 50-100 times.

https://doi.org/10.11781/sysydz198603193