| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1230768 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2013 | 6 Pages |
•We collect a total of 330 crude oil samples.•We presented a fast analytical tool for rapid identification of crude oil type.•Compared with NIR, IR method can distinguish highly similar mixed crude oils given in the study.•We study parameters of the moving window correlation coefficient method in the paper.
Based on attenuated total reflectance mid-infrared spectroscopy and moving window correlation coefficient method, a efficient analytical tool is presented for rapid identification of crude oil type. Spectra between highly similar crude oils can be easily distinguished by the spectral searching method. Compared with NIR, IR method can distinguish highly similar mixed crude oils given in the study. Parameters of the moving window correlation coefficient method are studied in the paper.
Graphical abstractTwo similar crude oils (Arab middle crude oil and Arab heavy crude oil) were selected from the MIR spectral library according to their detailed assay data. The moving window correlation coefficients of the two very similar crude oils were calculated using the parameters established. It can be seen that some MWR values are less than 0.9450 in the region of 700–720 and 760–770 cm−1, the two similar crude oils have been distinguished, although the Q value was 0.9988, and the correlation coefficient of the full spectra as one was near 0.9990. The result shows that the moving window correlation coefficient method can distinguish the MIR spectra of very similar crude oils.Figure optionsDownload full-size imageDownload as PowerPoint slide
