Determination of cobalt in low-alloy steels using laser-induced breakdown spectroscopy combined with laser-induced fluorescence

Jiaming Li, Lianbo Guo, Nan Zhao, Xinyan Yang, Rongxing Yi, Kuohu Li, Qingdong Zeng, Xiangyou Li, Xiaoyan Zeng, Yongfeng Lu

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

Cobalt element plays an important role for the properties of magnetism and thermology in steels. In this work, laser-induced breakdown spectroscopy combined with laser-induced fluorescence (LIBS-LIF) was studied to selectively enhance the intensities of Co lines. Two states of Co atoms were resonantly excited by a wavelength-tunable laser. LIBS-LIF with ground-state atom excitation (LIBS-LIFG) and LIBS-LIF with excited-state atom excitation (LIBS-LIFE) were compared. The results show that LIBS-LIFG has analytical performance with LoD of 0.82 μg/g, R2 of 0.982, RMSECV of 86 μg/g, and RE of 9.27%, which are much better than conventional LIBS and LIBS-LIFE. This work provided LIBS-LIFG as a capable approach for determining trace Co element in the steel industry.

Original languageEnglish (US)
Pages (from-to)234-238
Number of pages5
JournalTalanta
Volume151
DOIs
StatePublished - May 1 2016

Keywords

  • Cobalt
  • Laser-induced breakdown spectroscopy
  • Laser-induced fluorescence
  • Steel

ASJC Scopus subject areas

  • Analytical Chemistry

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