Open AccessDetermination of boron with molecular emission using laser-induced breakdown spectroscopy combined with laser-induced radical fluorescence
Author(s) -
Lianbo Guo,
Zhihao Zhu,
Jiaming Li,
Yun Tang,
Shisong Tang,
Zhongqi Hao,
Xiangyou Li,
Yongfeng Lu,
Xiaoyan Zeng
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.002634
Subject(s) - laser induced breakdown spectroscopy , boron , laser induced fluorescence , materials science , excited state , spectroscopy , emission spectrum , fluorescence , analytical chemistry (journal) , radical , laser , absorption spectroscopy , ground state , excitation , fluorescence spectroscopy , spectral line , atomic physics , chemistry , optics , physics , electrical engineering , organic chemistry , quantum mechanics , astronomy , chromatography , engineering
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.