Method for rapidly analyzing detailed composition of light oil fraction

The invention discloses a method for rapidly analyzing detailed components of light oil fractions, and relates to the technical field of petroleum product analysis, and the method comprises the following steps: establishing a chromatographic rapid analysis method for 15-30 minutes; establishing a sample database according to a chromatographic analysis method, a standard analysis method and GC-MS data; establishing a gasoline type classifier, and screening characteristic molecules when the classifier is constructed; constructing a data set according to the input spectrogram and the sample type; counting the average retention time and retention indexes of the n-alkanes and the characteristic molecules and respective standard deviations from the standard database; a method for automatically identifying detailed monomer hydrocarbon of an unknown gasoline sample according to a chromatogram is established, and a molecular identification result is obtained. By optimizing the chromatographic analysis method, the anal