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Plotnikov, A. F.; Vogt, Carsten; Hoffmann, Volker; Täschner, Christine; Wetzig, K.

doi:10.1039/b105441b

Cited by 54 publications

(40 citation statements)

References 23 publications

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“…Depth profiling can provide a better spatial resolution in the direction of vertical ablation, than it would be possible by lateral scanning of the same features. 129 The depth resolution is hereby dependent on the rate of ablation per laser pulse, and depends on the material analysed in combination with the laser energy, pulse length and repetition rate. 130 Vertical profiling has been successfully applied to abiotic materials 130 and biological tissues.…”

Section: Depth Profiling and Three-dimensional Mappingmentioning

confidence: 99%

Chemical Imaging

Zitek

Adnot²,

Prohaska

2014

Sector Field Mass Spectrometry for Elemental and Isotopic Analysis

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The creation of chemical images as 2- and 3-dimensional representations of the elemental and isotopic distributions in physical and biological structures has gained significant importance for the spatially distinct analysis and interpretation of analytical data. As the principle of ‘chemical imaging’ can be applied across multiple scales combining multiple information levels and multiple commodities, e.g. by combining the information from single cells to higher hierarchical levels, like a complete animal, or by linking single compartments or plant and animal species to landscape information (‘isoscapes’), it is increasingly applied in a wide field of scientific disciplines. This chapter introduces secondary ion mass spectrometry (SIMS) and laser ablation inductively coupled plasma sector field mass spectrometry (LA-ICP-SFMS) as sensitive surface analytical techniques capable of performing direct solid analysis at the micrometre down to the nanometre scale for the production of high-resolution chemical images. The basic analytical background and key elements in the image creation process using SIMS and LA-ICP-MS are described. Software tools supporting data reduction and image production together with selected examples of chemical pictures and case studies are also given.

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Section: Depth Profiling and Three-dimensional Mappingmentioning

confidence: 99%

Chemical Imaging

Zitek

Adnot²,

Prohaska

2014

Sector Field Mass Spectrometry for Elemental and Isotopic Analysis

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“…In addition to to the aforementioned general advantages of solid sampling, LA also offers a lateral resolution down to ~5 µm and a depth resolution down to <1 µm [1,2,3,4,5,6]. However, with LA, accurate quantification is not an easy task, especially if no reference material showing a matrix composition similar to the samples to be analysed is available.…”

Section: Introductionmentioning

confidence: 95%

Electrothermal vaporisation ICP-mass spectrometry (ETV-ICP-MS) for the determination and speciation of trace elements in solid samples – A review of real-life applications from the author's lab

2002

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The use of electrothermal vaporisation (ETV) from a graphite furnace as a means of sample introduction in inductively coupled plasma mass spectrometry (ICP-MS) permits the direct analysis of solid samples. A multi-step furnace temperature programme is used to separate the vaporisation of the target element(s) and of the matrix components from one another. Sometimes, a chemical modifier is used to enable a higher thermal pre-treatment temperature, by avoiding premature analyte losses (stabilisation) or promoting the selective volatilisation of matrix components. In almost all instances, accurate results can be obtained via external calibration or single standard addition using an aqueous standard solution. Absolute limits of detection are typically ~1 pg, which corresponds to 1 ng/g for a typical sample mass of 1 mg. Real-life applications carried out in the author's lab are used to illustrate the utility of this approach. These applications aim at trace element determination in industrial and environmental materials. The industrial materials analysed include different types of plastics - Carilon, polyethylene, poly(ethyleneterephtalate) and polyamide - and photo- and thermographic materials. As samples from environmental origin, plant material, animal tissue and sediments were investigated. Some applications aimed at a multi-element determination, while in other, the content of a single, but often challenging, element (e.g., Si or S) had to be measured. ETV-ICP-MS was also used in elemental speciation studies. Separation of Se-containing proteins was accomplished using polyacrylamide gel electrophoresis (PAGE). Subsequent quantification of the Se content in the protein spots was carried out using ETV-ICP-MS. As the volatilisation of methylmercury and inorganic mercury could be separated from one another with respect to time, no chromatographic or electrophoretic separation procedure was required, but ETV-ICP-MS as such sufficed for Hg speciation in fish tissue.

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“…Latkoczy et al [14] han desarrollado un sistema simultáneo LIBS-LA-ICP-MS, demostrando la utilidad del sistema para caracterizar cuantitativamente la distribución lateral, en el rango micrométrico, de elementos mayoritarios y trazas en aleaciones multi-fase de magnesio; Coedo et al [15 y 16] cuantifican el aluminio y titanio, soluble y total, en aceros y preparan muestras sintéticas para identificar el tamaño de partícula de las inclusiones de Al 2 O 3 en aceros, encontrando una correlación lineal entre área de pico y tamaño medio de partícula (en el intervalo:25-100µm). Con relación a perfiles en profundidad, Plotnikov et al [17] y Bleiner et al [18] han realizado estudios sobre substratos de acero y WC/Co recubiertos con capas de TiC, TiN, Ti(C,N) y (Ti,Al)N; utilizando un espectrómetro de masas quadrupolo y uno de tiempo de vuelo, respectivamente. Con el quadrupolo obtienen una resolución en profundidad ≤ 25 µm (calculada a partir de las curvas intensidadtiempo), mientras que con el de tiempo de vuelo llegan a una resolución de 0,20 µm por pulso láser.…”

Section: Introductionunclassified

Resolución espacial en la ablación láser acoplada a la espectrometría de masas con fuente de plasma de acoplamiento inductivo.

Coedo¹,

Dorado²

2010

REVMETAL

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ResumenLa ablación láser como sistema de introducción de muestra a la espectrometría de masas con fuente de plasma de acoplamiento inductivo (LA-ICP-MS) ofrece la posibilidad de conocer la distribución espacial de los elementos. Variando la posición del haz láser sobre la superficie, se obtiene el perfil de la distribución lateral de elementos y, haciendo incidir sucesivos pulsos sobre un punto fijo, se obtiene el perfil de concentraciones en profundidad. Después de optimizar los parámetros operatorios se ha aplicado la técnica a muestras con distintas composiciones tanto en superficie como en profundidad. Con relación a la resolución lateral se ha comprobado que en una longitud similar al diámetro del cráter del haz láser, las señales de los elementos presentes aparecen mezcladas lo que dificulta establecer con precisión la interfase. En cuanto a la resolución en profundidad se establece claramente la influencia de la abundancia natural de los isótopos medidos. Palabras claveAblación láser; Espectrometría de masas con fuente de plasma de acoplamiento inductivo; Resolución espacial; Muestras soldadas; Muestras metálicas recubiertas. Spatial resolution in laser ablation inductively coupled plasma mass spectrometry AbstractLaser ablation as sampling system in inductively coupled plasma mass spectrometry (LA-ICP-MS) offers the possibility to know the spatial distribution of elements present in a solid sample. By varying the position of the laser beam on the sample surface, the profile of the lateral distribution of elements is obtained and, with successive pulses fired on a fixed point, profile in depth is achieved. After optimization of operating parameters the technique has been applied to samples with different compositions in both surface and depth. With regard to the lateral resolution has been found that in a length similar to the crater diameter of the laser beam, the signals of the elements appear mixed, making difficult to accurately establish the interface. Regarding the resolution in depth is clearly established the influence of the natural abundance of the measured isotopes.

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Untitled

Cited by 54 publications

References 23 publications

Chemical Imaging

Chemical Imaging

Electrothermal vaporisation ICP-mass spectrometry (ETV-ICP-MS) for the determination and speciation of trace elements in solid samples – A review of real-life applications from the author's lab

Resolución espacial en la ablación láser acoplada a la espectrometría de masas con fuente de plasma de acoplamiento inductivo.

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