For decades, it has been believed in Russian and foreign scientific and technical literature that conventional thin-layer chromatography (TLC) cannot be used for the determination of volatile compounds. Experiments have shown that the version of TLC with a closed adsorbent layer proposed recently at the Topchiev Institute, Russian Academy of Sciences, is applicable to the investigation of the group content of aromatic hydrocarbons in gasoline. It has been found that the best resolution of analyte groups of compounds can be achieved by means of circular chromatography and sample introduction into a chromatographic system, using the frontal variant of chromatography.