4.4 Article

Portable fiber-optic laser-induced breakdown spectroscopy system for the quantitative analysis of minor elements in steel

期刊

PLASMA SCIENCE & TECHNOLOGY
卷 21, 期 3, 页码 -

出版社

IOP PUBLISHING LTD
DOI: 10.1088/2058-6272/aadede

关键词

laser-induced breakdown spectroscopy; optical fiber; quantitative analyses; minor element

资金

  1. National Natural Science Foundation of China [61705064, 11647122]
  2. Natural Science Foundation of Hubei Province [2018CFB773, 2018CFB672]
  3. Project of the Hubei Provincial Department of Education [T201617]

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In this paper, we developed a portable laser-induced breakdown spectroscopy (LIBS) using an optical fiber to deliver laser energy and used it to quantitatively analyze minor elements in steel. The R-2 factors of calibration curves of elements Mn, Ti, V, and Cr in pig iron were 0.9965, 0.9983, 0.9963, and 0.991, respectively, and their root mean square errors of cross-validation were 0.0501, 0.0054, 0.0205, and 0.0245 wt%, respectively. Six test samples were used for the validation of the performance of the calibration curves established by the portable LIBS. The average relative errors of elements Mn, Ti, V, and Cr were 2.5%, 11.7%, 13.0%, and 5.6%, respectively. These results were comparable with most results reported in traditional LIBS in steel or other matrices. However, the portable LIBS is flexible, compact, and robust, providing a promising prospect in industrial application.

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