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

FANG Xu; LI Qi; ZHANG Zhengdong; LI Ke; LI Qingwu; YU Yaqin; LI Shuo; SHU Hui

doi:10.12338/j.issn.2096-9015.2022.0189

Volume 66 Issue 12

Feb. 2023

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Article Navigation > Metrology Science and Technology > 2022 > 66(12): 21-26

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

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

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

doi: 10.12338/j.issn.2096-9015.2022.0189

FANG Xu^{1, 2
,},
LI Qi^{2
,
,},
ZHANG Zhengdong²,
LI Ke²,
LI Qingwu²,
YU Yaqin²,
LI Shuo²,
SHU Hui²

1.
Hefei University of Technology, Hefei 230009, China
2.
National Institute of Metrology, Beijing 100029, China

Received Date: 2022-07-30
Accepted Date: 2022-08-22

Available Online: 2022-09-26

Publish Date: 2022-12-18

Abstract

Abstract

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.
- methanol gasoline,
- portable Raman spectrometer,
- Raman spectrum correction,
- peak detection algorithm,
- quantitative analysis model

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References(19)

References

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