Abstract

A calibration method based on homogeneous material for correcting laser-induced breakdown spectroscopy (LIBS) measurement-error bias in the case of dust pollution under laboratory conditions is proposed. The measured plasma spectra of the sample can be corrected by measuring the spectral integral of the homogeneous material. Thus, we can effectively minimize the dust pollution effect on LIBS and guarantee its precision. Results show that the mean absolute errors of CaO, MgO, ${\mathrm{Fe}}_2{\mathrm{O}}_3$, ${\mathrm{Al}}_2{\mathrm{O}}_3$, and ${\mathrm{SiO}}_2$ in cement samples are decreased notably from 1.02%, 0.06%, 0.15%, 0.57%, and 0.80% to 0.41%, 0.02%, 0.04%, 0.35%, and 0.39%, respectively. Combination of this calibration method with the traditional optical dustproof methods will significantly extend the LIBS equipment maintenance cycle and make preliminary preparations for the next practical industrial application.

© 2017 Optical Society of America

Detection of heavy metal Cd in polluted fresh leafy vegetables by laser-induced breakdown spectroscopy

Mingyin Yao, Hui Yang, Lin Huang, Tianbing Chen, Gangfu Rao, and Muhua Liu
Appl. Opt. 56(14) 4070-4075 (2017)

On-stream analysis of iron ore slurry using laser-induced breakdown spectroscopy

Xiao Cheng, Xinyan Yang, Zhihao Zhu, Lianbo Guo, Xiangyou Li, Yongfeng Lu, and Xiaoyan Zeng
Appl. Opt. 56(33) 9144-9149 (2017)

Application of a mobile laser-induced breakdown spectroscopy system to detect heavy metal elements in soil

Deshuo Meng, Nanjing Zhao, Mingjun Ma, Li Fang, Yanhong Gu, Yao Jia, Jianguo Liu, and Wenqing Liu
Appl. Opt. 56(18) 5204-5210 (2017)

Simultaneous analysis of Cr and Pb in contaminated pork by laser-induced breakdown spectroscopy

Mingyin Yao, Gangfu Rao, Lin Huang, Muhua Liu, Hui Yang, Jinyin Chen, and Tianbing Chen
Appl. Opt. 56(29) 8148-8153 (2017)

Comparative study of calibration-free laser-induced breakdown spectroscopy methods for quantitative elemental analysis of quartz-bearing limestone

Muhammad Fahad, Zahid Farooq, and Muhammad Abrar
Appl. Opt. 58(13) 3501-3508 (2019)