The absorption spectrum in the near-infrared region is obtained by transmission or reflection using the doubling or combined frequency of the stretching vibration of the chemical bond of the hydrogen-containing group, and the ethanol gasoline for vehicles is established through modern chemometrics methods such as principal component regression and partial least squares method. (E10) The linear or nonlinear relationship (calibration model) between the near-infrared spectrum of the product and its quality index, thereby realizing the use of spectral information to study the octane number, motor octane number, ethanol content, and other organic matter of the sample to be tested. Rapid analysis of oxygenate content, benzene content, aromatics content and olefin content.
T/CPCIF 0186-2022 history
2022T/CPCIF 0186-2022 Rapid analysis method of motor vehicle ethanol gasoline（E10）— Near infrared spectrometry