Steel Analysis with Laser-Induced Breakdown Spectrometry in the Vacuum Ultraviolet

Sturm, Volker; Péter, László; Noll, Reinhard

doi:10.1366/0003702001951183

Cited by 172 publications

(101 citation statements)

References 3 publications

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“…Sturm et al 196,197 and Vrenegor et al 198 investigated the use of the multi-pulse excitation LIBS in steel alloys. Triple laser pulses were generated by one laser source (modified to produce three separate lasers pulses) 196 or by two lasers sources (one producing double-pulses and other producing a single-pulse).…”

Section: Alloys and Metallurgic Samplesmentioning

confidence: 99%

“…Triple laser pulses were generated by one laser source (modified to produce three separate lasers pulses) 196 or by two lasers sources (one producing double-pulses and other producing a single-pulse).…”

Section: Alloys and Metallurgic Samplesmentioning

confidence: 99%

“…198 The main components of the LIBS systems were one 196,197 or two Q-switched Nd:YAG lasers 198 operating at 1064 nm with a pulse duration on the order of nanoseconds. The sample chamber was flushed with argon gas.…”

Section: Alloys and Metallurgic Samplesmentioning

confidence: 99%

See 2 more Smart Citations

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: Alloys and Metallurgic Samplesmentioning

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.

342

195

View full text Add to dashboard Cite

show abstract

“…7,8 The plasma commonly yields the most intense radiation just after the breakdown but the background intensity also becomes high, which requires to set criteria under consideration of the background strength. 9,10 Also, if an internal standard line is selected, it should exhibit a similar temporal variation in the intensity to that of the analytical line. A time interval for measuring the emission intensity (gate width) and a waiting time to start the measurement after the breakdown (delay time) are important experimental factors.…”

Section: Methodsmentioning

confidence: 99%

Metallurgical Consideration on the Calibration Curve for Binary Alloy Samples in Low-pressure Argon Laser-induced Plasma Spectrometry

2011

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“…At present, the conventional techniques used for elemental analysis in steelmaking plants are still off-line methods that require solidified samples to be transported to an adjacent laboratory for analysis. Common measurement methods such as spark source optical emission spectrometry (Spark-OES), X-ray fluorescence (XRF) spectrometry and inductively coupled plasma optical emission spectrometry (ICP-OES) are not easily applied to real-time and in situ analysis because of the need for sample pre-treatment [1]. Under optimum conditions, the total time required for analysis, including the sample pre-treatment time, is still greater than 3 min.…”

Section: Introductionmentioning

confidence: 99%