Effect of particle size distribution in laser-induced breakdown spectroscopy analysis of mesoporous V–SiO2 catalysts

Pouzar, Miloslav; Kratochvíl, Tomáš; Kaski, Saara; Kaiser, Jozef; Knotek, Petr; Čapek, Libor; Černohorský, Tomáš

doi:10.1039/c1ja10167f

Cited by 11 publications

(6 citation statements)

References 20 publications

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“…Since the glass powder samples were collected from the entire volume of the bulk piece of the glasses, it is assumed that the analyzed powder samples are reasonably representative of the total volume of the glasses. Additionally, it has been reported that the particle size influences the LIBS signal; however, without any significant relationship or clear correlation 48 . In fact, the authors in ref 48 .…”

Section: Methodsmentioning

confidence: 97%

“…Additionally, it has been reported that the particle size influences the LIBS signal; however, without any significant relationship or clear correlation. 48 In fact, the authors in ref. 48 did not observe a significant correlation between statistical particle size distribution and LIBS signal intensity.…”

Section: Libs Analysismentioning

confidence: 99%

“…48 In fact, the authors in ref. 48 did not observe a significant correlation between statistical particle size distribution and LIBS signal intensity. According to a recent study published in ref.…”

Section: Libs Analysismentioning

confidence: 99%

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Fluorine loss determination in bioactive glasses by laser‐induced breakdown spectroscopy (LIBS)

Pablos-Martín

Jaimes

Wahl

et al. 2021

Int J of Appl Glass Sci

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Fluoride‐containing bioactive glasses and glass‐ceramics in the SiO2‐P2O5‐CaO‐CaF2 system are of great interest for dental applications, where the precipitation of fluorapatite supports tooth remineralization. Fluorine quantification in those glasses is key to estimate thermal properties and crystallization tendency. This work presents a study on fluorine determination by laser induced breakdown spectroscopy (LIBS) in four melt‐derived glass powders with varying P2O5 concentrations. LIBS enables fluorine quantification with a reduced analysis time, minimal to no sample preparation, and high spatial resolution. The fluorine calibration curve was obtained from CaF2 and SiO2 mixtures as reference samples, and the fluorine loss upon glass melting has been determined as a function of P2O5 content. The P2O5‐free glass shows the lowest fluorine loss (13%), with HF volatilization likely being responsible for the loss. By contrast, the glass with the highest P2O5 content (11.33 wt%) exhibits the largest fluorine loss (55%), owing to additional mechanisms involving the volatilization of phosphorus species like POF3.

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Section: Methodsmentioning

confidence: 97%

Section: Libs Analysismentioning

confidence: 99%

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Fluorine loss determination in bioactive glasses by laser‐induced breakdown spectroscopy (LIBS)

Pablos-Martín

Jaimes

Wahl

et al. 2021

Int J of Appl Glass Sci

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“…Particle size inhomogeneity is one of the major matrix effects in the measurement of particle flow. The influence can be broadly classified into two types: (1) the uneven distribution of element depended on the particle diameter; 20 , 21 (2) the size effect to the plasma–particle interaction 22 , 23 . In this paper, to evaluate the size effect in spark plasma, quartz sands with different diameters were tested to exclude influence of compositional dependence on the particle diameter.…”

Section: Resultsmentioning

confidence: 99%

Optimizing critical parameters for the directly measurement of particle flow with PF-SIBS

Yao

Zhang

et al. 2018

Sci Rep

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A novel measurement technology named as particle flow-spark induced breakdown spectroscopy (PF-SIBS) was reported for real-time measurement of solid materials. Critical measurement parameters of PF-SIBS were optimized and a set of fly ashes with different carbon content were measured for evaluation of measurement performance. Four electrode materials, tungsten, copper, molybdenum and platinum, were compared in the aspects of signal stability, line interference and electrode durability. Less line interference and better signal stability were obtained with W and Cu electrode, while W electrode has better durability. Quartz sand with diameters from 48 μm to 180 μm were tested to investigate the influence of particle size. As the particle diameter increased, the intensity of Si 288.16 nm line decreased while that of ambient air constituents increased. To reduce the particle effect, the sum intensity from sample and ambient air were introduced to correct. The RSD of line intensity between the five diameters were reduced from 67.30% to 16.59% with Cu electrodes and from 63.21% to 13.64% with W electrodes. With the optimal measurement parameters and correction, fly ash samples with different carbon content were tested and the correlation coefficients R2 of multivariate calibration achieved 0.987.

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“…Therefore, although interesting in terms of the catalytic application, these papers were largely ignored for the purposes of this review. Two papers with a specific analytical focus were reported by Hussain and Siddiqa 318 and Pouzar et al 319 The former described the effect of particle distribution in LIBS analysis of mesporous vanadium-silica, whilst the latter detailed XPS, SIMS, TGA, FTIR and SEM studies of nickel-copper-aluminium modified supported nanocatalysts. The remainder of this review has categorized papers on catalysts and catalyst function as follows: petroleum/petroleum products, automotive catalysts, alternative fuels/fuel cells, photocatalysts and oxidative reactions.…”

Section: Catalystsmentioning

confidence: 99%

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

Carter

Fisher

Hinds

et al. 2012

J. Anal. At. Spectrom.

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Effect of particle size distribution in laser-induced breakdown spectroscopy analysis of mesoporous V–SiO2 catalysts

Cited by 11 publications

References 20 publications

Fluorine loss determination in bioactive glasses by laser‐induced breakdown spectroscopy (LIBS)

Fluorine loss determination in bioactive glasses by laser‐induced breakdown spectroscopy (LIBS)

Optimizing critical parameters for the directly measurement of particle flow with PF-SIBS

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

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