A procedure for correcting self-absorption in calibration free-laser induced breakdown spectroscopy

Bulajic, D.; Corsi, M.; Cristoforetti, G.; Legnaioli, Stefano; Palleschi, Vincenzo; Salvetti, A.; Tognoni, E.

doi:10.1016/s0584-8547(01)00398-6

Cited by 309 publications

(173 citation statements)

References 22 publications

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“…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%

Laser Induced Breakdown Spectroscopy

Pasquini¹,

Cortez²,

Silva³

et al. 2007

J. Braz. Chem. Soc.

342

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%

Laser Induced Breakdown Spectroscopy

Pasquini¹,

Cortez²,

Silva³

et al. 2007

J. Braz. Chem. Soc.

342

195

View full text Add to dashboard Cite

show abstract

“…22 The resulting spectra sometimes suffer from self-absorption and thus have a pronounced non-linearity in the calibration function at increasing concentration. 23,24 In Fig. 11, calibration curves for Ni I 341.476-nm and Ni I 352.454-nm lines are bended downwards, due to selfabsorption.…”

Section: Surface Structure Of the Ablated Fe-cr Alloysmentioning

confidence: 99%

Fundamental Study on Ablation Sampling of Fe-based Binary Alloys in Laser-induced Breakdown Optical Emission Spectrometry

2017

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“…Each kind of atom has some different energy levels which determine the wavelength of the line. Besides the identification of the elements in the sample, the calculation of the amount of each element in the sample from the line intensities is possible taking in account different necessary conditions fixed by local thermodynamic equilibrium (LTE condition) or problems related with matrix effects which can reduce the accuracy of quantitative analysis [8,9].…”

Section: Laser Ablation and Plasma Physics Of Libsmentioning

confidence: 99%

Laser-Induced Breakdown Spectroscopy: Fundamentals, Applications, and Challenges

2012

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Laser-induced breakdown spectroscopy (LIBS) is a technique that provides an accurate in situ quantitative chemical analysis and, thanks to the developments in new spectral processing algorithms in the last decade, has achieved a promising performance as a quantitative chemical analyzer at the atomic level. These possibilities along with the fact that little or no sample preparation is necessary have expanded the application fields of LIBS. In this paper, we review the state of the art of this technique, its fundamentals, algorithms for quantitative analysis or sample classification, future challenges, and new application fields where LIBS can solve real problems.

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A procedure for correcting self-absorption in calibration free-laser induced breakdown spectroscopy

Cited by 309 publications

References 22 publications

Laser Induced Breakdown Spectroscopy

Laser Induced Breakdown Spectroscopy

Fundamental Study on Ablation Sampling of Fe-based Binary Alloys in Laser-induced Breakdown Optical Emission Spectrometry

Laser-Induced Breakdown Spectroscopy: Fundamentals, Applications, and Challenges

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