Determination of fluorine in copper ore using laser-induced breakdown spectroscopy assisted by the SrF molecular emission band. Issue 4 (25th February 2020)

• Record Type: Journal Article
• Authors: Tang, Zhiyang; Zhou, Ran; Hao, Zhongqi; Zhang, Wen; Li, Qingzhou; Zeng, Qingdong; Li, Xiangyou; Zeng, Xiaoyan; Lu, Yongfeng
• Is Part Of: Journal of analytical atomic spectrometry. Volume 35:Issue 4(2020)
• Page Start: 754
• Page End: 761
• Publication Date: 2020-02-25
• Subjects: Atomic spectra -- Periodicals; Atomic absorption spectroscopy -- Periodicals; 543.0858
• DOI: 10.1039/c9ja00407f
• Languages: English
• ISSNs: 0267-9477

Abstract

Abstract : The SrF molecular band as an alternative to the fluorine atomic line was proposed to detect fluorine in copper ore using LIBS technology in air. 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 ( R 2 = 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.