The classification of hydrocarbons with factor analysis and the PONA analysis of gasoline

The feasibility of classification of hydrocarbons by factor analysis was studied. The difference between the retention indices of 191 hydrocarbons on stationary phases DB-1 and DB-5 at the same temperature and their temperature coefficients on each column were processed with Varimax orthogonal rotation and Promax oblique rotation. The hydrocarbons were successfully classified into paraffins (P), olefins (O), naphthenes (N) and aromatics (A). A gasoline sample was analyzed and the PONA value was obtained with the above method. The correctness of this method was fully proved by gas chromatography-mass spectrometry.