Comparison of different calibration strategies for the analysis of zinc and other pure metals by using the GD-MS instruments VG 9000 and Element GD

Gusarova, Tamara; Hofmann, Thomas; Kipphardt, Heinrich; Venzago, Cornel; Matschat, Ralf; Panne, Ulrich

doi:10.1039/b921649a

Cited by 34 publications

(21 citation statements)

References 25 publications

(23 reference statements)

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“…An SI-traceable GD-MS calibration was achieved by means of synthetic standards [3][4][5], yielding uncertainties smaller than 30 % for the majority of the detected impurities. This is a considerable improvement compared to typical uncertainties of GD-MS, which are of the order of (300 to 500) %.…”

Section: Chemical Analysismentioning

confidence: 99%

Procedure for the Impurity-Related Correction at the Indium Fixed-Point

et al. 2011

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Determining the influence of impurities on the fixed-point temperatures of the ITS-90 requires the completion of several tasks. In this paper, the progress made at Physikalisch-Technische Bundesanstalt (PTB) and BAM Federal Institute for Materials Research and Testing is presented and remaining questions are discussed. The projected characterization procedure at PTB, which is based on the established SIE method (sum of the individual estimates), using a new indium fixed-point cell is described as an example. This procedure includes an SI-traceable chemical analysis of the material in the fixed-point cell with sufficiently low uncertainties, the individual experimental determination of the influence of the quantified impurities on the fixed-point temperature, and the establishment of direct links to the phase-transition temperatures of the national standard and of an assumed material of ideal purity. A characteristic difference to the common practice is the chemical analysis of the fixed-point metal being done after determining the cell's freezing temperature. This allows for the detection and consideration of contamination and purification effects due to the filling process, or due to the contact with the carbon crucible and other parts 123 294 Int J Thermophys (2011) 32:293-302 of the fixed-point cell. A chemical analysis of an indium fixed-point was carried out by BAM with relative measurement uncertainties below 30 % which have not been previously achieved. The results provide evidence for the precipitation of some impurities, which is apparently inconsistent with the corresponding binary phase diagrams, but was explained in a recent publication. Implications for the use of the SIE method shall be described briefly at the end.

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Section: Chemical Analysismentioning

confidence: 99%

Procedure for the Impurity-Related Correction at the Indium Fixed-Point

et al. 2011

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“…These matrices matched RSF from the calibration with CRM and have metrological traceability to the International System of Units [33]. Hence each RSF value in the alumina samples has been confirmed to match those of alumina matrix CRM.…”

Section: Accepted Manuscriptmentioning

confidence: 81%

Determination of trace elements in high purity alumina powder by helium enhanced direct current glow discharge mass spectrometry

Jung

Kim

Hinrichs

2016

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…87 The calibration of both GDSFMS instruments was carried out using standard RSF and self-prepared synthetic compressed powder standards, from a zinc matrix. Validation of the trace-element mass fractions of the synthetic standards was carried out using ICP-MS and additional crosschecking was performed using available CRMs to obtain the calibration curves for some elements.…”

Section: Glow Discharge Mass Spectrometrymentioning

confidence: 99%

“…22 Summary of the main quantification approaches used for GD-MS 87. (2) Using quantitative analytical methods, such as wet chemical or other calibrated methods (e.g.…”

mentioning

confidence: 99%

Glow Discharge Mass Spectrometry

Venzago

Pisonero

2014

Sector Field Mass Spectrometry for Elemental and Isotopic Analysis

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GDMS is based on a glow discharge ion source, which generates ions through sputtering (cathodic sputtering) of a solid surface and ionisation (electron impact or Penning ionisation) by a glow discharge plasma. A glow discharge plasma is formed by the passage of an electric current through a low-pressure gas. The ions are separated in a mass spectrometer and finally recorded at a detector. GDMS is a method for the direct determination of trace elements in solid states providing traceelement information of solid samples. Beside the direct current (DC) mode, analytical glow discharges can also be operated in a radiofrequency (RF) mode, most often applied for analysis of nonconducting samples (Figures 13.1 and 13.2).

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Comparison of different calibration strategies for the analysis of zinc and other pure metals by using the GD-MS instruments VG 9000 and Element GD

Cited by 34 publications

References 25 publications

Procedure for the Impurity-Related Correction at the Indium Fixed-Point

Procedure for the Impurity-Related Correction at the Indium Fixed-Point

Determination of trace elements in high purity alumina powder by helium enhanced direct current glow discharge mass spectrometry

Glow Discharge Mass Spectrometry

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