Sensitivity improvement in the detection of v and Mn elements in steel using laser-induced breakdown spectroscopy with ring-magnet confinement

Zhongqi Hao, Lianbo Guo, Changmao Li, Meng Shen, Xiaoheng Zou, Xiangyou Li, Yongfeng Lu, Xiaoyan Zeng

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

To improve the detection sensitivity of vanadium (V) and manganese (Mn) elements in steel using laser-induced breakdown spectroscopy (LIBS), a ring magnet was employed to spatially and magnetically confine plasmas produced from steel samples using an Nd:YAG laser. The results showed that the optical emission and signal-to-noise ratios (SNRs) for both V I 437.92 nm and Mn I 403.08 nm lines were enhanced by the ring-magnet confinement. The enhancements were found to be due to an increase in the plasma temperature and electron density as a result of both spatial and magnetic confinement. The calibration curves of V I 437.92 nm and Mn I 403.08 nm with/without confinement were established. The 3σ-limits of detection (LoDs) for V and Mn in steels were 11 and 30 ppm with the ring magnet, lower than the 18 and 41 ppm with a degaussed magnet and the 41 and 56 ppm in open air, respectively.

Original languageEnglish (US)
Pages (from-to)2309-2314
Number of pages6
JournalJournal of Analytical Atomic Spectrometry
Volume29
Issue number12
DOIs
StatePublished - Dec 1 2014

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Laser induced breakdown spectroscopy
Steel
Manganese
Magnets
Plasmas
Vanadium
Carrier concentration
Signal to noise ratio
Calibration
Lasers
Air
Temperature

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Sensitivity improvement in the detection of v and Mn elements in steel using laser-induced breakdown spectroscopy with ring-magnet confinement. / Hao, Zhongqi; Guo, Lianbo; Li, Changmao; Shen, Meng; Zou, Xiaoheng; Li, Xiangyou; Lu, Yongfeng; Zeng, Xiaoyan.

In: Journal of Analytical Atomic Spectrometry, Vol. 29, No. 12, 01.12.2014, p. 2309-2314.

Research output: Contribution to journalArticle

Hao, Zhongqi ; Guo, Lianbo ; Li, Changmao ; Shen, Meng ; Zou, Xiaoheng ; Li, Xiangyou ; Lu, Yongfeng ; Zeng, Xiaoyan. / Sensitivity improvement in the detection of v and Mn elements in steel using laser-induced breakdown spectroscopy with ring-magnet confinement. In: Journal of Analytical Atomic Spectrometry. 2014 ; Vol. 29, No. 12. pp. 2309-2314.
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AU - Shen, Meng

AU - Zou, Xiaoheng

AU - Li, Xiangyou

AU - Lu, Yongfeng

AU - Zeng, Xiaoyan

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