New Procedure for Quantitative Elemental Analysis by Laser-Induced Plasma Spectroscopy

Ciucci, A.; Corsi, M.; Palleschi, Vincenzo; Rastelli, S.; Salvetti, A.; Tognoni, E.

doi:10.1366/0003702991947612

Cited by 754 publications

(407 citation statements)

References 29 publications

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“…For instance, it has been demonstrated that the analysis of 9 elements in an aluminum alloy can be carried out by employing the spectral line intensities detected from all constituents of the sample over a wide spectral wavelength range and plotting a family of Boltzmann curves. 40 An improved procedure was developed to account for line self absorption (a effect that induces non-linearity to the analytical curve) and applied to the analysis of steel, with even more success. 41 Research in the field of calibration-free LIBS will certainly continue to grow and it represents a very interesting aspect of the technique with respect to overcoming one of its drawbacks related to severe matrix effects the characteristics of the sample can impose on the emission spectra.…”

Section: Theoretical Studies and Calibration-free Libsmentioning

confidence: 99%

“…The calibration-free method was used for spectra analyses. 40 The use of this method allowed the quantification of the concentrations of all alloy elements (major and trace elements), even when present in concentrations below the usual LIBS detection limits. Values near to the nominal concentrations were encountered with errors lower than 1% and RSD about 0.1%.…”

Section: Alloys and Metallurgic Samplesmentioning

confidence: 99%

“…However, no significant increase of temperature between single and double-pulse plasmas was observed. Employing the calibration-free method, 40 it was possible to detected elements that could not be detected by the single-pulse configuration at the same laser pulse energy (e.g. Cr, Ni and Pb).…”

Section: Environmental Applicationsmentioning

confidence: 99%

See 2 more Smart Citations

Laser Induced Breakdown Spectroscopy

Pasquini¹,

Cortez²,

Silva³

et al. 2007

J. Braz. Chem. Soc.

326

195

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Esta revisão descreve os aspectos fundamentais, a instrumentação, as aplicações e tendências futuras de uma técnica analítica que se encontra em seu estágio de consolidação e que está em vias de estabelecer o seu nicho entre as técnicas espectrofotométricas modernas. A técnica é denominada Espectroscopia de Emissão em Plasma Induzido por Laser (em inglês, Laser Induced Breakdown Spectroscopy, LIBS) e sua principal característica está no uso de pulsos de laser como fonte de energia para vaporizar a amostra e excitar a emissão de radiação eletromagnética, a partir de seus elementos e/ou fragmentos moleculares. A radiação emitida é analisada por meio de instrumentos ópticos de alta resolução e as suas intensidades são medidas, usualmente com detectores rápidos de estado sólido. Em conjunto, esses dispositivos permitem a geração e a medida de um espectro de emissão de faixa ampla do fenômeno induzido pelo pulso de laser. O espectro registrado contém informação qualitativa e quantitativa que pode ser correlacionada com a identidade da amostra ou empregada na determinação da quantidade de seus constituintes. Essa revisão é dividida em quatro partes. A primeira aborda aspectos históricos da técnica e os conceitos teóricos relevantes associados com LIBS; então, os aspectos práticos de diversas abordagens experimentais e instrumentais empregadas na implementação da técnica são revistos de forma crítica; as aplicações encontradas na literatura, incluindo aquelas que empregam quimiometria, são classificadas e exemplificadas por meio de trabalhos relevantes recentemente publicados. Finalmente, uma tentativa de estabelecer uma avaliação global e as perspectivas futuras para a técnica é apresentada.This review describes the fundamentals, instrumentation, applications and future trends of an analytical technique that is in its early stages of consolidation and is establishing its definitive niches among modern spectrometric techniques. The technique has been named Laser Induced Breakdown Spectroscopy (LIBS) and its main characteristic stands in the use of short laser pulses as the energy source to vaporize samples and excite the emission of electromagnetic radiation from its elements and/or molecular fragments. The emitted radiation is analyzed by high resolution optics and the intensities are recorded, usually by fast triggered solid state detectors. Together, these devices allow producing and registering a wide ranging emission spectrum of the short-lived phenomenon induced by the laser pulse. The spectrum contains qualitative and quantitative information which can be correlated with sample identity or can be used to determine the amount of its constituents. This review is divided in four parts. First, the relevant historical and theoretical concepts associated with LIBS are presented; then the main practical aspects of the several experimental and instrumental approaches employed for implementation of the technique are critically described; the applications related in the literature, including those making use of chemometri...

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Section: Theoretical Studies and Calibration-free Libsmentioning

confidence: 99%

Section: Alloys and Metallurgic Samplesmentioning

confidence: 99%

See 1 more Smart Citation

Laser Induced Breakdown Spectroscopy

Pasquini¹,

Cortez²,

Silva³

et al. 2007

J. Braz. Chem. Soc.

326

195

View full text Add to dashboard Cite

show abstract

“…The concentrations of beryllium and tungsten were determined quantitatively for the Be-W sample in figure 3b using the calibration-free LIBS (CF-LIBS) method [5]. CF-LIBS relies on determining the temperature of the plasma from a Saha-Boltzmann plot [6] drawn for each emitting species in the plasma plume.…”

Section: Quantitative Studies By Calibration-free Libsmentioning

confidence: 99%

Development of laser-induced breakdown spectroscopy for analyzing deposited layers in ITER

et al. 2014

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Laser-induced breakdown spectroscopy (LIBS) experiments on different ITER-relevant berylliumtungsten mixtures were performed to develop LIBS towards tokamak applications. Some of the samples were doped or implanted with deuterium to simulate fuel retention. The results indicate that beryllium and tungsten have a number of distinguishable spectral lines for diagnostics purposes, but detection of deuterium is challenged by its low concentration and low fluences used. By studying the depth profiles of the coatings, the removal rates of the layers were observed to depend on the thickness, composition, and deuterium content of the coating. Quantitative studies of the compositions were made by CF-LIBS, and the results agreed well with those given by ion-beam methods.

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“…The procedure of CF-LIBS has been described in detail by Ciucci et al [18]; therefore, we only introduce the basic characteristics of this method for better depicting the procedure of IRSAC. Assuming the plasma is optically thin and in local thermodynamic equilibrium (LTE) in the temporal window of signal acquisition, the measured integral line intensity can be expressed as:…”

Section: Calibration-free Libsmentioning

confidence: 99%