Practical Guide to ICP-MS

Thomas, Robert

doi:10.1201/9780203027073

Cited by 42 publications

(34 citation statements)

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“…A Perkin-Elmer Sciex ELAN 6000 (Perkin-Elmer Corporate Headquarters, Waltham, MA) inductively coupled plasma mass spectrometer [100] with laser ablation was used to measure the spatial distribution of magnesium content (top to bottom of weld). Samples were cross sectioned, and measurements were made on an ST-LT plane (Figure 1(b)).…”

Section: G Mass Spectrometrymentioning

confidence: 99%

The Mechanism of Grain Coarsening in Friction-Stir-Welded AA5083 after Heat Treatment

Chen

Wang

Okamoto

et al. 2010

Metall Mater Trans A

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Friction stir welding (FSW) takes place in the solid state, thus providing potential advantages of welds of high strength and ductility because of fine microstructures. However, post-FSW heat treatment can create very coarse grains, potentially reducing mechanical properties. AA5083-H18 sheets were friction-stir butt welded using three sets of welding parameters representing a wide range of heat input. They were then heat treated for 5 minutes at 738 K (465°C), producing grain sizes exceeding 100 lm near the top weld surfaces, with the coarse grains extending toward the bottom surface to various degrees depending on the welding parameters. Electron backscatter diffraction (EBSD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), optical metallography, inductively coupled plasma-mass spectrometry, and Vickers hardness testing were used to characterize the regions within welds. Particle pinning was determined quantitatively and used with Humphreys' model of grain growth to interpret the behavior. The mechanism responsible for forming the large grains was identified as abnormal grain growth (AGG), with AGG occurring only for regions with pre-heat-treatment grain sizes smaller than 3 lm. Second-phase particle volume fractions and sizes, textures, and solute concentrations were not significantly different in AGG and non-AGG regions. Ultrafine grain layers with grain diameters of 0.3 mm were characterized and had high densities of pinning particles of MgSi 2 , Al 2 O 3 , and Mg 5 Al 8 . Strategies to eliminate AGG by alloy and weld process design were discussed.

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Section: G Mass Spectrometrymentioning

confidence: 99%

The Mechanism of Grain Coarsening in Friction-Stir-Welded AA5083 after Heat Treatment

Chen

Wang

Okamoto

et al. 2010

Metall Mater Trans A

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“…The most commonly used nebulisers for analytical plasma source spectrometry are pneumatic nebulisers (for a more detailed description and additional references; the authors refer to the reviews of Sharp,15,16 as well as to basic literature on ICP-MS. [17][18][19] Three basic types of pneumatic nebulisers have proved to be useful: concentric, crossflow and Babingtontype nebulisers. A pneumatic nebuliser consists of a nozzle to accelerate the transport (or nebuliser) gas and a tubing for introducing the liquid sample into the gas stream.…”

Section: Pneumatic Nebulisersmentioning

confidence: 99%

Inductively Coupled Plasma Mass Spectrometry

Jakubowski

Horsky

Roos

et al. 2014

Sector Field Mass Spectrometry for Elemental and Isotopic Analysis

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ICP-MS is based on the formation of (preferentially monovalent positively) charged atomic ions in an inductively coupled Ar plasma at almost 10 000 K. The ions formed are transferred from the plasma source at ambient pressure into a mass separator operated at high vacuum via a set of cones. The ions are separated according to their mass/charge ratio in the mass separator (quadrupole, magnetic sector field or time-of-flight mass separator). In most cases, the ions are detected using a secondary electron multiplier; in some set-ups (also) a Faraday cup can be used. Single-collector (scanning mass spectrometer usually used for quantitative elemental analysis) or multicollector (static operation of mass spectrometer for precise isotope ratio analysis) configurations can be found (Figures 12.1 and 12.2).

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“…More sensitive detectors for these instruments are now available, but column separation of the major elements is necessary before isotopic ratios can be determined. This technique provides a means of carrying out less routine and more complex research studies (Taylor, 2001;Thomas, 2003). …”

Section: Inductively Coupled Plasma-mass Spectroscopy (Icp-ms)mentioning

confidence: 99%