[1] Ge Y M. Comparison of different measurement methods of aluminum oxide in ores[J]. Contemporary Chemical Industry, 45, 2041-2043(2016).

[2] Chen Z S, Yang L Q, Xie L et al. An improved method for potassium dichromate determination of total iron in iron ore[J]. Chinese Journal of Inorganic Analytical Chemistry, 5, 41-44(2015).

[3] Zuo P, Hu Z M. Quick determination of aluminum content in iron ore by EDTA volumetric method[J]. Metal Mine, 77-79, 83(2008).

[4] Hu J P, Wang R Z, Du B H et al. Determination of silver, copper, lead and zinc in sulfide ores by flame atomic absorption spectrometry and inductively coupled plasma-optical emission spectrometry[J]. Rock and Mineral Analysis, 37, 388-395(2018).

[5] Guo X R, Sun Q L, Zhang H L et al. Determination of trace silver in uranium-niobium-lead polymetallic ore by high resolution continuum source flame atomic absorption spectrometry[J]. Metallurgical Analysis, 39, 1-7(2019).

[6] Zhang J. Aqua regia digestion-inductively coupled plasma-atomic emission spectrometric method for simultaneously determines copper, lead and zinc of copper-lead-zinc ores[J]. Geology of Chemical Minerals, 35, 111-115, 124(2013).

[7] Jia J W, Fu H B, Wang H D et al. Improvement of beam shape modification on stability of laser induced breakdown spectroscopy[J]. Chinese Journal of Lasers, 46, 0311004(2019).

[8] Huang W H, He C J, Zhao W Q et al. Development of confocal LIBS microscope[J]. Acta Optica Sinica, 40, 2430002(2020).

[9] Huang J, Lu J Q, Yang H et al. Quantitative analysis on coal calorific value using nanosecond, femtosecond, and dual-pulse laser-induced breakdown spectroscopy[J]. Laser & Optoelectronics Progress, 56, 193002(2019).

[10] Vadillo J M, Laserna J J. Laser-induced breakdown spectroscopy of silicate, vanadate and sulfide rocks[J]. Talanta, 43, 1149-1154(1996).

[11] McMillan N J, Harmon R S, de Lucia F C et al. Laser-induced breakdown spectroscopy analysis of minerals: carbonates and silicates[J]. Spectrochimica Acta Part B: Atomic Spectroscopy, 62, 1528-1536(2007).

[12] Sheng L W, Zhang T L, Niu G H et al. Classification of iron ores by laser-induced breakdown spectroscopy (LIBS) combined with random forest (RF)[J]. Journal of Analytical Atomic Spectrometry, 30, 453-458(2015).

[13] Yang Y W, Hao X J, Zhang L L et al. Application of scikit and keras libraries for the classification of iron ore data acquired by laser-induced breakdown spectroscopy (LIBS)[J]. Sensors, 20, 1393(2020).

[14] Álvarez J, Velásquez M, Myakalwar A K et al. Determination of copper-based mineral species by laser induced breakdown spectroscopy and chemometric methods[J]. Journal of Analytical Atomic Spectrometry, 34, 2459-2468(2019).

[15] Lu Y Z, Wang J S, Li W L et al. Quantitative analysis of Si and Mg in ore samples using laser-induced breakdown spectroscopy[J]. Chinese Journal of Lasers, 36, 2109-2114(2009).

[16] Rifai K, Özcan L, Doucet F et al. Quantification of copper, nickel and other elements in copper-nickel ore samples using laser-induced breakdown spectroscopy[J]. Spectrochimica Acta Part B: Atomic Spectroscopy, 165, 105766(2020).

[17] Wang C, Zhang X M, Zhu X P et al. Data denoising method for rock identification based on LIBS technology[J]. Acta Photonica Sinica, 48, 1030001(2019).

[18] Luo W F, Zhao X X, Sun Q B et al. Characteristics of the aluminum alloy plasma produced by a 1064 nm Nd∶YAG laser with different irradiances[J]. Pramana, 74, 945-959(2010).

[19] Deng X X, Yang G, Zhang H et al. Accurate quantification of alkalinity of sintered ore by random forest model based on PCA and variable importance (PCA-VI-RF)[J]. Applied Optics, 59, 2042(2020).

[20] Xu X J, Li A Z, Wang X S et al. The high-accuracy prediction of carbon content in semi-coke by laser-induced breakdown spectroscopy[J]. Journal of Analytical Atomic Spectrometry, 35, 984-992(2020).

[21] Li A. The mechanism of signal enhancement by confinement and discharge assisted in laser induced breakdown spectroscopy[D], 28-33(2018).

[22] Xu X J, Wang X S, Li A Z et al. Fast classification of tea varieties based on laser-induced breakdown spectroscopy[J]. Chinese Journal of Lasers, 46, 0311003(2019).