Detection of fluorine using laser-induced breakdown spectroscopy and Raman spectroscopy

Pořízka, Pavel; Kaski, Saara; Hrdlička, Aleš; Modlitbová, Pavlína; Sládková, Lucia; Häkkänen, Heikki; Procházka, David; Novotný, Jan; Gadas, Petr; Čelko, Ladislav; Novotný, Karel; Kaiser, Jozef

doi:10.1039/c7ja00200a

Cited by 35 publications

(19 citation statements)

References 32 publications

(29 reference statements)

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“…Such techniques as micro‐FTIR (Chen et al, 2015; Stokkan et al, 2017), laser‐induced breakdown spectroscopy (Gondal et al, 2011; Labutin et al, 2014; Quarles et al, 2014; Álvarez Llamas et al, 2016; Bonta et al, 2017; Porizka et al, 2017; Davari et al, 2019), glow discharge optical emission spectroscopy (GDOES) (Gonzalez‐Gago et al, 2014; Butler et al, 2017) and inductively coupled plasma optical emission spectrometry (ICP‐OES) (Wuilloud & Altamirano, 2006; Vogt et al, 2017) are mainly limited by relatively high detection limits, matrix effects, and interferences. Molecular absorption spectrometry with graphite furnace solid sampling was also suggested for halogen quantification based on molecular spectra of halogen‐metal compounds (de Moraes Flores et al, 2007; Bücker, Hoffmann, & Acker, 2014; Pereira et al, 2014; Pereira et al, 2015; Cadorim et al, 2018; MacHado et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Mass Spectrometry‐based Techniques for Direct Quantification of High Ionization Energy Elements in Solid Materials—challenges and Perspectives

Gubal

Chuchina

Sorokina

et al. 2020

Mass Spectrometry Reviews

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The determination of nonmetals, first of all, the most electronegative ones—nitrogen, oxygen, fluorine, chlorine, and bromine, poses the highest challenge for element analysis. These elements are characterized by high reactivity, volatility, high ionization energy, and the absence of intensive spectral lines in the optical spectral range. Conventional techniques of their quantification include considerable “wet chemistry” stages so the application of these techniques for the solid sample is highly laborious and prone to uncontrollable uncertainties. Additionally, current development in material science and other areas requires the quantification of the elements at lower levels with good sensitivity. Owing to their robustness and flexibility, mass spectrometry techniques provide vast possibilities for the quantification, spatial and isotopic analysis, including the solutions for direct analysis of solids. The current review focuses on the application of major mass spectrometric techniques for the quantification of N, O, F, Cl, and Br in solid samples. The following techniques are mainly considered: thermal ionization mass spectrometry (TIMS), isotope‐ratio MS (IRMS), secondary ion MS (SIMS), inductively coupled plasma MS (ICP‐MS), and glow discharge MS (GDMS); as the most accessible and widely applied for the purpose. General ionization issues, advantages, limitations, and novel methodological solutions are discussed. © 2020 John Wiley & Sons Ltd.

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Section: Introductionmentioning

confidence: 99%

Mass Spectrometry‐based Techniques for Direct Quantification of High Ionization Energy Elements in Solid Materials—challenges and Perspectives

Gubal

Chuchina

Sorokina

et al. 2020

Mass Spectrometry Reviews

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“…Fluorine detection with the LIBS in solid samples is a challenging task. The strongest and the most persistent emission lines of neutral fluorine within the spectral range of 200-900 nm are laying at around 685 and 703 nm [36]. The upper energy levels of transition for these lines are at 14.5 and 14.7 eV, respectively.…”

Section: Qualitative Analysismentioning

confidence: 92%

“…The direct determination of fluorine with the LIBS is a challenging task owing to the fact of its low excitation efficiency. Based on elemental and molecular band emission criteria, many research groups have attempted to detect and quantify fluorine using LIBS and chemometric techniques [35][36][37][38]. Contrary to the molecular band emission, LIBS analysis shows some strong spectral lines that may be employed for the detection of fluorine but with relatively weak emission intensity.…”

Section: Introductionmentioning

confidence: 99%

Chemical Analysis of Thermoluminescent Colorless Topaz Crystal Using Laser-Induced Breakdown Spectroscopy

et al. 2021

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We present results of calibration-free laser-induced breakdown spectroscopy (CF-LIBS) and energy-dispersive X-ray (EDX) analysis of natural colorless topaz crystal of local Pakistani origin. Topaz plasma was produced in the ambient air using a nanosecond laser pulse of width 5 ns and wavelength 532 nm. For the purpose of detection of maximum possible constituent elements within the Topaz sample, the laser fluences were varied, ranging 19.6–37.6 J·cm−2 and optical emission from the plasma was recorded within the spectral range of 250–870 nm. The spectrum obtained has shown the presence of seven elements viz. Al, Si, F, O, H, Na and N. Results shows that the fluorine was detected at laser fluence higher than 35 J·cm−2 and plasma temperature of >1 eV. Al and Si were found as the major compositional elements in topaz crystals. The ratios of concentrations of Al and Si were found as 1.55 and 1.59 estimated by CF-LIBS and EDX, respectively. Furthermore, no impurity was found in the investigated colorless topaz samples.

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“…Recently also some works focused on how to merge LIBS spectra and Raman spectra in classification. [ 30–37 ] Even though these merging methods of two kinds of spectra have been used in analyzing renal calculi, [ 30 ] geologically mixed samples, [ 31 ] plastics, [ 32 ] Mars mineralogy, [ 33,34 ] fluorine, [ 35 ] and bacteria, [ 36,37 ] parts of these works focus on using elemental or molecular information reflected by LIBS and Raman spectra separately, not the comprehensive processing of these information. Even though some methods preformed comprehensive data processing using chemometrics and machine learning methods, these works only merged the spectral information in data fusion level.…”

Section: Introductionmentioning

confidence: 99%

Feature‐level fusion of laser‐induced breakdown spectroscopy and Raman spectroscopy for improving support vector machine in clinical bacteria identification

Teng

Wang

Cui

et al. 2021

J Raman Spectroscopy

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In clinical field, the diagnosis of many diseases and their development stages depend on the detection of the corresponding bacteria. Raman spectroscopy and laser‐induced breakdown spectroscopy (LIBS) are two novel spectral diagnostic technologies for clinical bacteria identification. Both of them have been used in clinical detection combined with optimized support vector machine (SVM). In this paper, two feature‐level fusion methods (before feature selection fusion [BFSF] and after feature selection fusion [AFSF]) were proposed to improve the performance of SVM classifier and reduce the analyzing time (including the parameter tuning, model training, and testing time) simultaneously by combining data of LIBS and Raman spectroscopy. Using the most important 10 feature lines as the inputs of the optimized classifier, the analyzing time could be reduced to 1 to 2 min and the correct classification rate (CCR) achieved 95.67%. Without optimizing SVM parameters, the two proposed methods could achieve rapid and accurate classification of pathogenic bacteria further. The AFSF method showed better results with less fusion features while the BFSF method achieved higher CCR at 100% with more features. Both two methods costed around 0.2 s for analysis. These indicate that the proposed feature‐level fusion methods can improve the performance of SVM for bacteria detection. Maintaining the highest diagnostic accuracy, they can achieve the minimum analyzing time.

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Detection of fluorine using laser-induced breakdown spectroscopy and Raman spectroscopy

Abstract: In this work we investigate the relationship of the F line and CaF bands with varying Ca and F contents.

Cited by 35 publications

References 32 publications

Mass Spectrometry‐based Techniques for Direct Quantification of High Ionization Energy Elements in Solid Materials—challenges and Perspectives

Mass Spectrometry‐based Techniques for Direct Quantification of High Ionization Energy Elements in Solid Materials—challenges and Perspectives

Chemical Analysis of Thermoluminescent Colorless Topaz Crystal Using Laser-Induced Breakdown Spectroscopy

Feature‐level fusion of laser‐induced breakdown spectroscopy and Raman spectroscopy for improving support vector machine in clinical bacteria identification

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