Determination of Aroihaties in Diesel by Charge Coupled Device-Near-Infrared Spectroscopy
Xu Guangtong, Yuan Hongfu, Lu Wanzben ( Research Institute of Petroleum Processing, Beijing 100083)
A chaige-coupled-device-near-Infrared spectrometer ( CCD-NIR) was used to determine aromatics content in diesel in short wave near infrared spectral region (700 -1100 nm) with partial least square regression. Considering the effect of diesel color on the spectroscopy, the spectral region used to calibration was optimized and the baseline was treated by different methods. The effect of light radiation time on the diesel was also studied. The result predicted by CCD-NIR to unknown samples was compared with that by FT-NIR in long wave spectral region (1000 - 2000 nm) and that by high performance liquid chromatography. The relative standard deviation of the method was 0.2%.
【CateGory Index】： O657.33