A numerical study of expected accuracy and precision in Calibration-Free Laser-Induced Breakdown Spectroscopy in the assumption of ideal analytical plasma

Tognoni, E.; Cristoforetti, G.; Legnaioli, Stefano; Palleschi, Vincenzo; Salvetti, A.; Mueller, Marvin M.; Panne, Ulrich; Gornushkin, Igor B.

doi:10.1016/j.sab.2007.10.005

Cited by 210 publications

(118 citation statements)

References 28 publications

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“…A second -less common -application is laser ablation mass spectrometry (LAMS) [27,28], where the ions formed during the ablation process are directly transferred into a mass spectrometer for analysis. Both former approaches are somewhat limited for quantitative analysis of samples, where matrix-matched calibration standards are not readily available [29][30][31]. Matrix-assisted laser desorption and ionization (MALDI) [32] may be considered an approach similar to LAMS.…”

Section: Fundamental Aspects Of Laser Ablationmentioning

confidence: 99%

Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA‐ICPMS)

Hattendorf

Günther

2014

Handbook of Spectroscopy

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In laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) the aerosol analyzed by ICPMS is generated by evaporating (ablating) a solid sample by means of a high-energy pulsed laser beam, which is focused on the sample surface. The ability to concentrate laser energy into an area as small as 4 μm in diameter for current equipment enables spatially resolved elemental analysis of major, minor, and trace elements and isotope ratio measurements in almost any solid material [1][2][3][4][5]. The development of this technique started in 1985 when Alan Gray presented the very first attempt at quantitative analysis of geological materials using LA-ICPMS [6]. The general setup of LA-ICPMS has not undergone fundamental changes since this initial configuration, while technical improvements of laser sources, beam delivery optics, and ICPMS instrumentation led to better performance and an increasing range of applications until today. These applications range from geochemical studies over material sciences and technology into biochemical and even medical applications. Forensic studies of many kinds are routinely carried out, and quality control of production processes is an increasing field where this technique is employed. In general, LA-ICPMS is a valuable tool in elemental trace and ultra trace analysis whenever spatially resolved determinations are required or when sample consumption shall be minimized. Even for bulk analysis, LA-ICPMS may be considered as it eliminates the need for sample digestion and minimizes the occurrence of solvent-based spectral interferences, which can be a severe limitation in ICPMS when using conventional solution nebulization.LA-ICPMS basically consists of the following components:• The laser source and beam delivery. Different pulsed lasers are currently available for LA-ICPMS, which primarily differ in wavelength, pulse duration, and pulse energy as well as in beam geometry and energy distribution. The beam delivery in most cases consists of energy adjustment, steering and shaping elements, and an objective for focusing and observation. Beam shaping is carried out toHandbook of Spectroscopy, Second Edition. Edited by Günter Gauglitz and David S. Moore.

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Section: Fundamental Aspects Of Laser Ablationmentioning

confidence: 99%

Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA‐ICPMS)

Hattendorf

Günther

2014

Handbook of Spectroscopy

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“…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. In these studies, seven atomic and three ionic lines of beryllium and 27 atomic and 12 ionic lines of tungsten within the wavelength range 253-490 nm were chosen for the analyses.…”

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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“…LIBS spectra can be used in two distinct ways -elemental analysis 6,7 and material classification/identification 3,8 . While the elemental analysis utilises calibration 9 , calibration -free 10,11 or multivariate methods 12 , classification/identification relies predominantly on the multivariate methods 3,12 . LIBS has added a new paradigm in various fields like space 13 , archaeology 14 , biology 15 , isomer identification 16 biomedical 17,18 , industrial 19 , defense 2,20 , food processing 21 , nuclear waste 22 and forensics 23,24 .…”

Section: Introductionmentioning

confidence: 99%

An Approach to Reduce the Sample Consumption for LIBS based Identification of Explosive Materials

2017

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An experimental design based on spectral construction, which has potential to minimise the sample consumption, the number of laser shots and time required to collect the data from laser induced breakdown spectroscopy for identification of the explosive materials is reported in the study. This approach is an ideal solution in the field of hazardous material detection, where the availability of the sample can be a serious limiting factor. The experimental data recorded on a set of five high energy materials has been considered to test the performance of the proposed methodology. Multiple spectra are constructed by assuming a normal distribution at each wavelength of the spectrum, where random numbers are generated using the mean and standard deviations obtained from arbitrarily chosen five experimental spectra from each class. The newly generated spectra are called as synthetic spectra. The correct classification obtained from -K -nearest neighbour combined with principal component analysis and partial least square -discriminant analysis demonstrated very promising results. The correct classification rates differed by only 4 per cent -7 per cent as compared to conventional approach where experimental spectra alone are considered for the analysis. Further, when RDX is excluded, the obtained results are almost identical with conventional approach.

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A numerical study of expected accuracy and precision in Calibration-Free Laser-Induced Breakdown Spectroscopy in the assumption of ideal analytical plasma

Cited by 210 publications

References 28 publications

Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA‐ICPMS)

Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA‐ICPMS)

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

An Approach to Reduce the Sample Consumption for LIBS based Identification of Explosive Materials

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