| 光谱学与光谱分析 |
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| Rapid Quantitative Analysis of Content of the Additive in Gasoline for Motor Vehicles by Near-Infrared Spectroscopy |
| RONG Hai-teng1, SONG Chun-feng1*, YUAN Hong-fu1, LI Xiao-yu1, HU Ai-qin1, XIE Jin-chun1, YAN De-lin2 |
1. College of Materials Science and Engineering，Beijing University of Chemical Technology，Beijing 100029，China
2. SINOPEC Beijing Oil Products Company, Beijing 100023, China |
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Abstract A new rapid quantitative method for the determination of oxygenates and the compounds not included in the national standard in gasoline using near-infrared spectroscopy is raised by this paper. This method combine near-infrared spectroscopy with oblique projection. This experiment choose four different types of gasoline, including reconcile gasoline, FCC refined gasoline, reformed gasoline and desulfurizing gasoline. Prepare series gasoline samples containing different concentrations and different types of compounds. Using FTIR spectrometer to measure those samples and got transmission spectrums. Oblique projection method could separate quantity spectral signal from mixed spectrum signal, and using projection to calculate and analyze the separated signal to obtain the content of measured component. The deviation between this method and the real content is low, the absolute error is less than 0.8 and the relative error is less than 8%. For the actual gasoline samples, compare results of this method with gas chromatography, the absolute error are less than 0.85 and the relative error are less than 6.85%. This method solves the problem of general multivariate calibration methods. It is very significant for the development of rapid detection technology using NIR suitable for on-site and the improvement of the quality of gasoline.
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Received: 2014-07-10
Accepted: 2014-11-21
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Corresponding Authors:
SONG Chun-feng
E-mail: cfsong@mail.buct.edu.cn
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