CENTRIFUGAL THIN LAYER CHROMATOGRAPHY OF GROUP ANALYSIS OF CRUDE OILS AND EXTRACTS

In view of the present problems existing in column chromatography of the group analysis of crude oils and extracts,the author applied centrifugal thin layer chromatography.Samples are well separated by centrigualization.It is proved that this method has several advantages,such as clear and visible cutting points,good separating effects,etc.Furthermore,because of sectional cutting of aromatic hydrocarbons,chromatic circles are quite clear.