Weizhe Ma, Meirong Dong, Yongru Huang, Qi Tong, Liping Wei, Jidong Lu. Quantitative analysis method of unburned carbon content of fly ash by laser-induced breakdown spectroscopy[J]. Infrared and Laser Engineering, 2021, 50(9): 20200441
- Infrared and Laser Engineering
- Vol. 50, Issue 9, 20200441 (2021)
Fig. 1. Schematic diagram of LIBS system
Fig. 2. LIBS spectrum of fly ash sample（#1）
Fig. 3. Cross validation results of carbon content in fly ash based on MLR model 1 (a), 2 (b), 3 (c)
Fig. 4. Cross validation results of carbon content in fly ash based on PLSR model 1 (a), 2 (b), 3 (c)
Fig. 5. Cross validation results of carbon content in fly ash based on ELM model 1 (a), 2 (b), 3 (c)
Fig. 6. Cross validation results of carbon content in fly ash based on SVR model 1 (a), 2 (b), 3 (c)
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Table 1. Unburned carbon content of twenty fly ash samples
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Table 2. Characteristic spectral lines of fly ash samples
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Table 3. Prediction results of fly ash carbon content based on MLR and PLSR models
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Table 4. Prediction results of carbon content in fly ash based on ELM and SVR models
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