Determination of boron with molecular emission using laser-induced breakdown spectroscopy combined with laser-induced radical fluorescence

L. B. Guo, Z. H. Zhu, J. M. Li, Y. Tang, S. S. Tang, Z. Q. Hao, X. Y. Li, Y. F. Lu, X. Y. Zeng

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Boron is an essential element for industry, but it is hard to accurately and rapidly determine high boron content with conventional laser-induced breakdown spectroscopy (LIBS), due to the matrix and self-absorption effect. Using molecular emission is an alternative method for boron content analysis, but its weak spectra are major challenges. Here, boron monoxide (BO) radicals were used to establish calibration assisted by LIBS and laser-induced radical fluorescence (LIBS-LIRF). Two types of BO radical excitations, vibrational ground state excitation (LIRFG) and vibrational excited state excitation (LIRFE), were compared. The results showed that LIRFG achieved better sensitivity with a limit of detection of 0.0993 wt.%, while the LIRFE was more accurate with a root mean square error of cross validation of 0.2514 wt.%. In conclusion, this work provided a potential approach for molecular emission analysis with LIBS-LIRF.

Original languageEnglish (US)
Pages (from-to)2634-2642
Number of pages9
JournalOptics Express
Volume26
Issue number3
DOIs
StatePublished - Feb 5 2018
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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