Determination of fluorine in copper ore using laser-induced breakdown spectroscopy assisted by the SrF molecular emission band

Zhiyang Tang; Ran Zhou; Zhongqi Hao; Wen Zhang; Qingzhou Li; Qingdong Zeng; Xiangyou Li; Xiaoyan Zeng; Yongfeng Lu

doi:10.1039/C9JA00407F

Determination of fluorine in copper ore using laser-induced breakdown spectroscopy assisted by the SrF molecular emission band

Zhiyang Tang,

^a Ran Zhou,^a Zhongqi Hao,

^ab Wen Zhang,^a Qingzhou Li,^a Qingdong Zeng,

^c Xiangyou Li,

*^a Xiaoyan Zeng^a and Yongfeng Lu

Author affiliations

* Corresponding authors

^a Wuhan National Laboratory for Optoelectronics (WLNO), Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, PR China
E-mail: xyli@mail.hust.edu.cn

^b School of Measuring and Optical Engineering, Nanchang Hangkong University, Nanchang, Jiangxi 330063, P. R. China

^c School of Physics and Electronic-information Engineering, Hubei Engineering University, Xiaogan 432000, P. R. China

Abstract

The widely applied copper metal is mainly produced by smelting copper ore, in which fluorine (F) is one of the harmful elements. Therefore, the F content has become a mandatory test index for copper ore. The low excitation efficiency, complex and serious spectral interference makes it difficult to detect F element in copper ore using atomic emission spectroscopy of laser-induced breakdown spectroscopy (LIBS). To address this issue, SrF molecular emission bands were investigated to improve the analytical capabilities of LIBS for the determination of trace F in copper ore. The results demonstrated that the SrF molecular emission band produces a significantly accurate calibration model (R² = 0.9933), with high detection sensitivity (5 ppm), high analytical accuracy (RMSECV = 0.0049 wt%), and high analytical precision (6.64 wt%) for detection of F in copper ore. SrF molecular emission bands in LIBS show great potential for F determination in the copper ore industry. Furthermore, the mechanism behind the emission spectrum for the SrF molecule was also discussed.

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DOI: https://doi.org/10.1039/C9JA00407F
Article type: Paper
Submitted: 01 Dec 2019
Accepted: 14 Jan 2020
First published: 15 Jan 2020

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J. Anal. At. Spectrom., 2020,35, 754-761

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Determination of fluorine in copper ore using laser-induced breakdown spectroscopy assisted by the SrF molecular emission band

Z. Tang, R. Zhou, Z. Hao, W. Zhang, Q. Li, Q. Zeng, X. Li, X. Zeng and Y. Lu, J. Anal. At. Spectrom., 2020, 35, 754 DOI: 10.1039/C9JA00407F

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Journal of Analytical Atomic Spectrometry

Determination of fluorine in copper ore using laser-induced breakdown spectroscopy assisted by the SrF molecular emission band

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Determination of fluorine in copper ore using laser-induced breakdown spectroscopy assisted by the SrF molecular emission band

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