用傅里叶变换红外光谱测定汽油有关性质

用傅里叶变换红外光谱仪（FTIR），在1550－660cm^-1波数范围内，采用化学计量学的偏最小二乘法（PLS），测定汽油的辛烷值（RON）、密度、馏程（50％、90％）、芳烃、烯烃等质量性质。 试验结果表明，实验室标准方法测定的真值和红外光谱预测值的相关性好，检验结果符合国家标准方法的再现性要求。

Determination of Gasoline Properties by Fourier Transform Infr ared Spectroscopy

Combinedined with the partial least square regression, the octane number (RON), density, temperature evaporate (50%,90% ), aromatics and olefin concentration of gasoline were determined by the Fourier transform infrared spectroscopy at the wavenumber region of 1550 - 660cm-1. The experimental results showed that the actual values measured by the standard method were agree with the prediction values by the proposed method.