Elemental analysis of coal by tandem laser induced breakdown spectroscopy and laser ablation inductively coupled plasma time of flight mass spectrometry

The capabilities and analytical benefits of combined LIBS and LA-ICP-MS were evaluated for the analysis of coal samples. The ablation system consisted of a Nd:YAG laser operated 213nm. A Czerny-turner spectrograph with ICCD detector and time-of-flight based mass spectrometer were utilized for LIBS a...

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Bibliographic Details
Published in:Spectrochimica acta. Part B: Atomic spectroscopy 2015-07, Vol.109 (C), p.44-50
Main Authors: Dong, Meirong, Oropeza, Dayana, Chirinos, José, González, Jhanis J., Lu, Jidong, Mao, Xianglei, Russo, Richard E.
Format: Article
Language:English
Subjects:
Ablation
Aluminum
Coal
Coal analysis
Detectors
Emission analysis
Inductively coupled plasma mass spectrometry
Laser ablation
Laser-induce breakdown spectroscopy
Mathematical analysis
Quantitative analysis
Tandem
Trace elements
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Summary:The capabilities and analytical benefits of combined LIBS and LA-ICP-MS were evaluated for the analysis of coal samples. The ablation system consisted of a Nd:YAG laser operated 213nm. A Czerny-turner spectrograph with ICCD detector and time-of-flight based mass spectrometer were utilized for LIBS and ICP-MS detection, respectively. This tandem approach allows simultaneous determination of major and minor elements (C, Si, Ca, Al, Mg), and trace elements (V, Ba, Pb, U, etc.) in the coal samples. The research focused on calibration strategies, specifically the use of univariate and multivariate data analysis on analytical performance. Partial least square regression (PLSR) was shown to minimize and compensate for matrix effects in the emission and mass spectra improving quantitative analysis by LIBS and LA-ICP-MS, respectively. The correlation between measurements from these two techniques demonstrated that mass spectral data combined with LIBS emission measurements by PLSR improved the accuracy and precision for quantitative analysis of trace elements in coal. •Tandem LIBS LA-ICP-MS•Simultaneous determination of major and minor elements and trace elements in the coal samples.•Extended Dynamic Range•Correlation between LIBS with LA-ICP-MS demonstrated improved the accuracy and precision for quantitative analysis of coal.
ISSN:0584-8547
1873-3565
DOI:10.1016/j.sab.2015.04.008