【摘要】 现行石油沥青的柱色谱族组成分析方法存在某些局限性.为使其改进,采用薄层色谱(TLC)与氢火焰离子化检测器(FID)相结合的新方法.以硅胶或氧化铝吸附剂涂制于TLC烧结棒上,然后点样色谱展开,烧结棒以恒定速度通过检测器火焰,各组分被自动扫描.该法快速、准确,特别适合于低沥青含量样品的分析.此外,由于(TLC)棒在氢火焰上燃烧,吸附剂被活化,不需重涂制.烧结棒可重复使用约50～100次.更多还原

【Abstract】 There are certain limitatons in the present column chromatography for group compositional analysis of asphalt.To avoid them,a new alternate method which combines thin layer chromatography(TLC)with hydrogen flame ionization detector(FID)is 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 automatically scanned.This method is rapid,precise and especially applicable to the analysis of low asphalt content samples.Furthermore,because TLC bar has been burnt on hydrogen flame,the absorbent is reactivated,so that it necd not to be recoated.The sintered bar can be repeatedly used for aboat 50～100 times.更多还原