[1] R YAN, H J ZHU, C G ZHENG, M H XU. Emissions of organic hazardous air pollutants during Chinese coal combustion. Energy, 27, 485-503(2002).

[2] D REVEL. BP Statistical review of world energy 2021. The Catalyst Review Newsletter, 34(2021).

[3] S H LEE, S J YOON, H W RA et al. Gasification characteristics of coke and mixture with coal in an entrained-flow gasifier. Energy, 35, 3239-3244(2010).

[4] A B ROSS, J M JONES, S CHAIKLANGMUANG et al. Measurement and prediction of the emission of pollutants from the combustion of coal and biomass in a fixed bed furnace. Fuel, 81, 571-582(2002).

[5] S NAZARI, O SHAHHOSEINI, A SOHRABI-KASHANI et al. Experimental determination and analysis of CO₂， SO₂ and NO_x emission factors in Iran’s thermal power plants. Energy, 35, 2992-2998(2010).

[6] [6] 6潘越， 曾哲， 张恩瑜. 基于MATLAB和图像灰度值对X射线探测煤矸识别的研究［J］. 煤炭技术， 2017， 36（11）：307-309. doi: 10.13301/j.cnki.ct.2017.11.117PANY， ZENGZH， ZHANGE Y. Research on X ray detection of coal gangue recognition based on MATLAB and image gray value［J］. Coal Technology， 2017， 36（11）：307-309.（in Chinese）. doi: 10.13301/j.cnki.ct.2017.11.117

[7] Y S LI, W Y LU, J B ZHAO et al. Detection of caloric value of coal using laser-induced breakdown spectroscopy combined with BP neural networks. Spectroscopy and Spectral Analysis, 37, 2575-2579(2017).

[8] T B YUAN, Z WANG, S L LUI et al. Coal property analysis using laser-induced breakdown spectroscopy. Journal of Analytical Atomic Spectrometry, 28, 1045-1053(2013).

[9] Z Y HOU, Z WANG, T B YUAN et al. A hybrid quantification model and its application for coal analysis using laser induced breakdown spectroscopy. Journal of Analytical Atomic Spectrometry, 31, 722-736(2016).

[10] T A LABUTIN, A M POPOV, S N RAIKOV et al. Determination of chlorine in concrete by laser-induced breakdown spectroscopy in air. Journal of Applied Spectroscopy, 80, 315-318(2013).

[11] M T BONA, J M ANDRéS. Coal analysis by diffuse reflectance near-infrared spectroscopy： hierarchical cluster and linear discriminant analysis. Talanta, 72, 1423-1431(2007).

[12] J M ANDRéS, M T BONA. Analysis of coal by diffuse reflectance near-infrared spectroscopy. Analytica Chimica Acta, 535, 123-132(2005).

[13] J M ANDRéS, M T BONA. ASTM clustering for improving coal analysis by near-infrared spectroscopy. Talanta, 70, 711-719(2006).

[14] Y S WANG, M YANG, G WEI et al. Improved PLS regression based on SVM classification for rapid analysis of coal properties by near-infrared reflectance spectroscopy. Sensors and Actuators B： Chemical, 193, 723-729(2014).

[15] D G HICKS, J E O’REILLY, D W KOPENAAL. On the rapid estimation of % ash in coal from silicon content obtained via FNAA， XRF， or Slurry-injection AA(1981).

[16] [16] 16王清亚. 基于XRF的土壤重金属定量分析方法研究及应用［D］. 抚州： 东华理工大学.WANGQ Y. Research and Application of Quantitative Analysis Method of Soil Heavy Metals Based on XRF［D］. Fuzhou： East China Institute of Technology. （in Chinese）

[17] MA K F， Experimental study on determination of major elements in coal ash by X-ray fluorescence spectrometry. Coal Quality Technology, 2, 32-35(2019).

[18] X L LI, L ZHANG, Z H TIAN et al. Ultra-repeatability measurement of the coal calorific value by XRF assisted LIBS. Journal of Analytical Atomic Spectrometry, 35, 2928-2934(2020).

[19] S C YAO, H Q QIN, Q WANG et al. Optimizing analysis of coal property using laser-induced breakdown and near-infrared reflectance spectroscopies. Spectrochimica Acta Part A： Molecular and Biomolecular Spectroscopy, 239, 118492(2020).

[20] [20] 20褚小立， 袁洪福， 陆婉珍. 近红外分析中光谱预处理及波长选择方法进展与应用［J］. 化学进展， 2004， 16（4）： 528-542. doi: 10.3321/j.issn:1005-281X.2004.04.008CHUX L， YUANH F， LUW ZH. Progress and application of spectral data pretreatment and wavelength selection methods in NIR analytical technique［J］. Progress in Chemistry， 2004， 16（4）： 528-542.（in Chinese）. doi: 10.3321/j.issn:1005-281X.2004.04.008

[21] R G BRERETON. Introduction to multivariate calibration in analytical chemistry. Analyst, 125, 2125-2154(2000).