Peng Chen, Chao Qi, Renwei Liu, Zhenzhen Wang, Han Luo, Junjie Yan, Jiping Liu, Yoshihiro Deguchi. Quantitative Analysis of Carbon Content in Fly Ash Using LIBS Based on Support Vector Machine Regression[J]. Acta Optica Sinica, 2022, 42(9): 0930003
- Acta Optica Sinica
- Vol. 42, Issue 9, 0930003 (2022)
Fig. 1. Schematic of LIBS experimental system
Fig. 2. LIBS spectra of sample GD_0 at different resolutions. (a) Resolution is 0.075 nm/pixel; (b) resolution is 0.012 nm/pixel
Fig. 3. Calibration curves of carbon content in fly ash under different methods. (a) Traditional calibration method; (b) internal standard method
Fig. 4. Effects of c and g on MSE. (a) Training results of RBF kernel function; (b) training results of polynomial kernel function
Fig. 5. Quantitative analysis of carbon content based on characteristic spectra of internal standard elements
Fig. 6. Quantitative analysis of carbon content based on full spectrum
Fig. 7. Quantitative analysis of carbon content based on characteristic spectra of major elements
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Table 1. Carbon content of fly ash samples
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Table 2. Information of main characteristic lines
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Table 3. Evaluation index of carbon content under three inputs
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