Method for measuring character data of gasoline from near infrared light spectrum

A method for the gasoline property data determined by infrared spectroscopy, comprising the steps of: (1) Measurement of near infrared spectroscopy test gasoline samples, the following calculated spectrum peak areas corresponding to the respective absorption bands: ① the absorption section benzene CH , 872.8-879.8nm; ② meth CH absorption stage, 904.8-907.8nm, 909.8-916.8nm; ③ methylene CH absorption stage, 931.8-934.8nm; ④ alkenyl group CH absorption stage, 894.8-898.8nm; by peak area calculated for each segment code values ​​of the sample, (2) comparing the code values ​​encoding the test sample value and the sample in the sample database, the nature of the data obtained from the sample to be tested with the corresponding properties of the sample database. The method without establishing calibration model sample, the nature of the data can be accurately sample-octane gasoline and the like, rapid analysis, forecasting, analysis applies to the production line, the control.