Spectroscopy and Spectral Analysis, Volume. 42, Issue 11, 3435(2022)
LIBS Quantitative Analysis of Calorific Value of Straw Charcoal Based on XY Bivariate Feature Extraction Strategy
Figures & Tables(8)
Fig. 3. Threshold selection of regression coefficient method
(a): Full band PLSR model regression coefficient; (b): Model results with different regression coefficient thresholds
Fig. 4.
(a):
Fig. 5. Optimization of GA and Adaboost parameters
(a): GA parameter optimization; (b): Adaboost parameter optimization
Table 1. Statistical results of CV and main element content
View tableView in ArticleTable 1. Statistical results of CV and main element content
元素组成及特性 样本数 范围 均值±标准偏差 N/(g·kg-1) 79 0.63~1.41 1.01±0.22 C/(g·kg-1) 79 39.94~60.2 51.43±4.22 S/(g·kg-1) 79 0.2~0.71 0.28±0.07 H/(g·kg-1) 79 0.49~2.4 1.45±0.56 O/(g·kg-1) 79 36.23~57.15 45.83±4.56 CV/(MJ·kg-1) 79 15.68~21.17 18.73±1.3 K/(g·kg-1) 79 4.62~13.42 9.09±2.81 Na/(g·kg-1) 79 0.34~5.64 2.57±1.38 Ca/(g·kg-1) 79 2.02~10.78 5.75±2.04 Mg/(g·kg-1) 79 0.8~7.41 3.96±1.9 Pb/(mg·kg-1) 79 1.11~11.53 5.69±2.89 Cr/(mg·kg-1) 79 2.79~28.51 12.51±6.51 Cu/(mg·kg-1) 79 6.67~19.06 11.9±3.48 Zn/(mg·kg-1) 79 27.01~624.2 84.25±101.28 P/(mg·kg-1) 79 1.47~2.91 2.17±0.38
Table 2. Correlation analysis between CV and elements
View tableView in ArticleTable 2. Correlation analysis between CV and elements
N C S H O K Na Ca Mg Pb Cr Cu Zn P CV 0.1 0.85b -0.22 0.46b -0.84b 0.25a -0.33b -0.29a -0.17 -0.16 -0.22a -0.07 -0.17 0.03
Tools
Get Citation
Copy Citation Text
Hong-wei DUAN, Mei GUO, Rong-guang ZHU, Qi-jian NIU. LIBS Quantitative Analysis of Calorific Value of Straw Charcoal Based on XY Bivariate Feature Extraction Strategy[J]. Spectroscopy and Spectral Analysis, 2022, 42(11): 3435
Paper Information
Category: Research Articles
Received: Sep. 23, 2021
Accepted: --
Published Online: Nov. 23, 2022
The Author Email: Hong-wei DUAN (dhwsg123@ujs.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20