Volume 66 Issue 12
Feb.  2023
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FANG Xu, LI Qi, ZHANG Zhengdong, LI Ke, LI Qingwu, YU Yaqin, LI Shuo, SHU Hui. Analysis of Methanol Content in Methanol Gasoline Based on Calibration of Portable Raman Spectrometer[J]. Metrology Science and Technology, 2022, 66(12): 21-26. doi: 10.12338/j.issn.2096-9015.2022.0189
Citation: FANG Xu, LI Qi, ZHANG Zhengdong, LI Ke, LI Qingwu, YU Yaqin, LI Shuo, SHU Hui. Analysis of Methanol Content in Methanol Gasoline Based on Calibration of Portable Raman Spectrometer[J]. Metrology Science and Technology, 2022, 66(12): 21-26. doi: 10.12338/j.issn.2096-9015.2022.0189

Analysis of Methanol Content in Methanol Gasoline Based on Calibration of Portable Raman Spectrometer

doi: 10.12338/j.issn.2096-9015.2022.0189
  • Received Date: 2022-07-30
  • Accepted Date: 2022-08-22
  • Available Online: 2022-09-26
  • Publish Date: 2022-12-18
  • As an alternative fuel to gasoline, methanol gasoline is economical and environmentally friendly, and its methanol concentration has a significant effect on calorific value, explosion resistance, and combustion efficiency. As a nondestructive, rapid, portable, easy-to-operate, and low-cost analytical method, portable Raman spectroscopy has been applied to the analysis of the methanol content of methanol gasoline. However, the nonlinear Raman frequency-shift demonstration error of portable Raman spectrometers affects the accuracy of analytical modeling. A method for methanol content analysis of methanol gasoline with portable Raman spectrometer calibration is proposed. The polystyrene Raman frequency-shifted reference material is used for multi-point calibration, and a peak detection algorithm is used for the calibration of Raman spectra. Based on two characteristic peaks of methanol, a binary linear regression method is proposed to establish a quantitative analysis model. The prediction results and evaluation indexes of the model show that this method can predict the methanol content more accurately.
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