[1] Hong JIA, Fusheng LU, Bin HAO. China titanium industry development report 2020. Titanium Industry Progress, 38, 34-41(2021).

[2] Hexi JIN, Kexiang WEI, Jianming LI et al. Research progress of titanium alloy for aviation. Transactions of Nonferrous Metals Society of China, 25, 280-292(2015).

[3] Zhongxian MA, Junning FENG, Zhijie HU. Research progress of titanium and titanium alloy profiles. World Nonferrous Metal, 52-53(2016).

[4] Jiaming GUO, Jinglong LIANG, Haitao SHEN et al. Preparation methods and application progress of biomedical titanium alloy materials. Hot Working Technology, 30-34(2021).

[5] Lianbo GUO, Deng ZHANG, Lanxiang SUN et al. Development in the application of laser-induced breakdown spectroscopy in recent years: a review. Frontiers of Physics, 16, 1-25(2021).

[6] Yang YU, Zhongqi HAO, Changmao LI et al. Application of support vector machine algorithm in plastic identification by laser-induced breakdown spectroscopy. Chinese Journal of Physics, 62, 215201(2013).

[7] Zhenlin HU, Feng CHEN, Deng ZHANG et al. A method for improving the accuracy of calibration-free laser-induced breakdown spectroscopy by exploiting self-absorption. Analytica Chimica Acta, 1183, 339008(2021).

[8] Yaxiong HE, Wenqi ZHOU, Chuan KE et al. Review of laser induced breakdown spectroscopy in gas detection. Spectroscopy and Spectral Analysis, 41, 2681-2687(2021).

[9] Shixiang MA, Yun TANG, Yuyang MA et al. The pH effect on the detection of heavy metals in wastewater by laser-induced breakdown spectroscopy coupled with a phase transformation method. Journal of Analytical Atomic Spectrometry, 35, 198-203(2020).

[10] Jingjun LIN, Xiaomei LIN, Lianbo GUO et al. Identification accuracy improvement for steel species using a least squares support vector machine and laser-induced breakdown spectroscopy. Journal of Analytical Atomic Spectrometry, 33, 1545-1551(2018).

[11] Jiasen WU, Qing GAO, Gongxiang WEI et al. Optical properties and laser-induced breakdown spectroscopy analysis of Al-or co-doped CuO thin films prepared on glass by radio-frequency magnetron sputtering. Thin Solid Films, 722, 138572(2021).

[12] Yanwu CHU, Shisong TANG, Shixiang MA et al. Accuracy and stability improvement for meat species identification using multiplicative scatter correction and laser-induced breakdown spectroscopy. Optics Express, 26, 10119-10127(2018).

[13] Zhifang ZHAO, Hanyue YU, Siyu ZHANG et al. Visualization accuracy improvement of spectral quantitative analysis for meat adulteration using Gaussian distribution of regression coefficients in hyperspectral imaging. Optik, 212, 164737(2020).

[14] Dacheng ZHANG, Zhongqi FENG, Kuan WEI et al. Remote laser-induced breakdown spectroscopy and its application (invited). Acta Photonica Sinica, 50, 1030001(2021).

[15] V C COSTA, SANTOS FERREIRA SDOS , L N SANTOS et al. Qualitative and quantitative analysis of soils using laser-induced breakdown spectroscopy and chemometrics tools. Journal of Applied Spectroscopy, 87, 378-386(2020).

[16] Lianbo GUO, Weinan ZHENG, Feng CHEN et al. Meat species identification accuracy improvement using sample set portioning based on joint x-y distance and laser-induced breakdown spectroscopy. Applied Optics, 60, 5826-5831(2021).

[17] S SUNGHO, M YOUNGMIN, L E E JAEPIL et al. Signal processing for real-time identification of similar metals by laser-induced breakdown spectroscopy. Plasma Science and Technology, 21, 034011(2018).

[18] S M ABERKANE, M ABDELHAMID, F MOKDAD et al. Sorting zamak alloys via chemometric analysis of their LIBS spectra. Analytical Methods, 9, 3696-3703(2017).

[19] A M OLLILA, J LASUE, H E NEWSOM et al. Comparison of two partial least squares-discriminant analysis algorithms for identifying geological samples with the ChemCam laser-induced breakdown spectroscopy instrument. Applied Optics, 51, B130-B142(2012).

[20] Kai LIU, Qianqian WANG, Hua ZHAO et al. Application of laser induced breakdown spectroscopy in plastic classification. Spectroscopy and Spectral Analysis, 31, 1171-1174(2011).

[21] Lianbo GUO, Yong ZHANG, Zhongqi HAO et al. Quantitative detection of vanadium and titanium in steel by laser-induced breakdown spectroscopy. Spectroscopy and Spectral Analysis, 34, 217-220(2014).

[22] Zhonghan ZHOU, Xueyong TIAN, Lanxiang SUN et al. Fiber-LIBS technology combined with SVM to identify aluminum alloy brand. Laser & Optoelectronics Progress, 55, 063002(2018).

[23] Lijian PAN, Weifang CHEN, Rongfang CUI et al. Quantitative analysis of aluminum alloy based on laser induced breakdown spectroscopy and radial basis function neural network. Laser & Optoelectronics Progress, 57, 193002(2020).

[24] Xiaotao YAN, Xinying PENG, Yuzhi QIN et al. Classification of plastics using laser-induced breakdown spectroscopy combined with principal component analysis and K nearest neighbor algorithm. Results in Optics, 4, 100093(2021).