Double-Pulse Remote Laser-Induced Breakdown Spectroscopy Analysis of Magnesium Alloys

Qi, Lifeng; Sun, Lanxiang; Cong, Zhaotong; Xin, Yong; Li, Yang

doi:10.4236/jcc.2013.17009

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…It can be used for simultaneous and multi-elemental analysis by capturing the emission spectrum which contains information about the elements present in the target material. However, LIBS is not suitable for isotopic analysis due to poor resolution of the spectral shift in atomic and ionic spectra from isotopes, especially in atmospheric pressure laser plasma [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Isotopic and elemental analysis by electrostatic energy analyzer laser ablated time-of-flight mass spectrometer

Shah¹,

Qureshi²,

Alvi³

et al. 2023

Laser Phys.

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In this work, we present a modified setup of the time of flight (TOF) mass spectrometer. It consists of a laser ablation source, and a Q-switched Nd:YAG laser (532 nm, 100 mJ, 7 ns) integrated with a linear TOF mass spectrometer coupled with an electrostatic energy analyzer (EEA). Ions are detected by a channeltron electron multiplier assembled with EEA. The main objective of this work is to resolve the ion’s initial energy problem and improve the reproducibility of the results. Employing this newly developed setup the elemental analysis of a known sample was performed for different laser energies and found no shift in the position of the ions signals on the time scale. In addition to elemental analysis, isotopic compositions of lithium, titanium, copper, and silver samples have been also derived. Our results are in good agreement with their natural abundance. The design parameters of the instrument were optimized. The mass calibration was achieved by measuring the flight time of various ions; Li+, Ti+, Cu+, and Ag+.

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Section: Introductionmentioning

confidence: 99%

Isotopic and elemental analysis by electrostatic energy analyzer laser ablated time-of-flight mass spectrometer

Shah¹,

Qureshi²,

Alvi³

et al. 2023

Laser Phys.

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A review of the LIBS analysis for the plasma-facing components diagnostics

Maurya

Marín-Roldán

Veis

et al. 2020

Journal of Nuclear Materials

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Simultaneous analysis of Cr and Pb in contaminated pork by laser-induced breakdown spectroscopy

et al. 2017

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Laser-induced breakdown spectroscopy (LIBS) as a rapid and green method was used to detect heavy metals Cr and Pb in pork contaminated in the lab. The laser-induced plasma was generated by a Q-switched Nd:YAG laser, and the LIBS signal was collected by a spectrometer with a charge-coupled device detector. The traditional calibration curves (CC) and multivariate partial least squares (PLS) algorithm were applied and compared to validate the accuracy in predicting the content of heavy metals in samples. The results demonstrated that the correlation coefficient of CC is poor by the classical univariate calibration method, so the univariate calibration analysis cannot effectively serve the quantitative purpose in analyzing heavy metals' residue in pork with a complex matrix. The analysis accuracy was improved effectively by the PLS method, and the correlation coefficient is 0.9894 for Cr and 0.9908 for Pb. The concentration of Cr and Pb in samples from a prediction set was obtained using the PLS calibration method, and the average relative errors for the 21 samples in the prediction set are lower than 6.53% and 7.82% for Cr and Pb, respectively. The investigated results display that the matrix effect would be reduced effectively during the quantitative analysis of pork by a LIBS-combined PLS model, and the predictive accuracy would be improved greatly compared to traditional univariate analysis.

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Double-Pulse Remote Laser-Induced Breakdown Spectroscopy Analysis of Magnesium Alloys

Cited by 3 publications

References 13 publications

Isotopic and elemental analysis by electrostatic energy analyzer laser ablated time-of-flight mass spectrometer

Isotopic and elemental analysis by electrostatic energy analyzer laser ablated time-of-flight mass spectrometer

A review of the LIBS analysis for the plasma-facing components diagnostics

Simultaneous analysis of Cr and Pb in contaminated pork by laser-induced breakdown spectroscopy

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