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Related Experiment Videos

A long-term validation of the modernised DC-ARC-OES solid-sample method.

K Flórián1, J Hassler, O Förster

  • 1Department of Chemistry, Faculty of Metallurgy, Technical University of Kosice, Slovakia. Karol.Florian@tuke.sk

Fresenius' Journal of Analytical Chemistry
|January 19, 2002
PubMed
Summary

This study validates the DC-ARC solid sample spectrometric method using ISO 17025 standards, confirming its long-term calibration stability and key performance criteria. The Neumann trend test and normality/homoscedasticity checks ensure analytical signal reliability.

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Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Quality Assurance

Background:

  • The DC-ARC solid sample spectrometric method requires rigorous validation for reliable analytical results.
  • ISO 17025 provides a framework for assessing the technical competence of testing and calibration laboratories.
  • Understanding method stability and validation criteria is crucial for accurate elemental analysis.

Purpose of the Study:

  • To validate the DC-ARC solid sample spectrometric method according to ISO 17025 standards.
  • To assess the long-term stability of the calibration process for the DC-ARC method.
  • To evaluate key validation criteria, including linearity, normality, homoscedasticity, and trend analysis.

Main Methods:

  • Application of the ISO 17025 validation procedure.

Related Experiment Videos

  • Assessment of linearity and calibration characteristics.
  • Statistical checks for normality and homoscedasticity.
  • Neumann trend test for time-variation analysis of analytical signals.
  • Comparative analysis with the ETV-ICP-OES method.

    • Main Results:

    • The DC-ARC method demonstrated long-term calibration stability.
    • Key validation criteria, including linearity, normality, and homoscedasticity, were met.
    • The Neumann test indicated no significant trends in analytical signal over time.
    • Validation data showed comparability with the ETV-ICP-OES method.

    Conclusions:

    • The DC-ARC solid sample spectrometric method is validated and exhibits long-term stability.
    • The applied validation procedure ensures the reliability and accuracy of the analytical results.
    • The method's performance is comparable to other established techniques like ETV-ICP-OES.