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Standard reference materials for thorium analysis.

L Holmes1

  • 1Institute for Reference Materials and Measurements, Geel, Belgium. holmes@irmm.irc.be

Radiation Protection Dosimetry
|February 15, 2002
PubMed
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Finding suitable reference materials (RMs) is crucial for accurate thorium analysis, especially with methods requiring sample digestion. This overview details available thorium RMs and highlights a need for new workplace materials.

Area of Science:

  • Analytical Chemistry
  • Environmental Science
  • Radiochemistry

Background:

  • Reference materials (RMs) are essential for developing, validating, and calibrating analytical measurements.
  • Thorium analysis, particularly using techniques like ICP-MS, requires complete sample digestion due to thorium's presence in resistant mineral phases.
  • Availability of suitable RMs is critical for reliable thorium quantification.

Purpose of the Study:

  • To provide an overview of currently available reference materials for thorium (232Th and other isotopes).
  • To identify sources and indicative costs of these reference materials.
  • To address the need for new reference materials, especially for workplace matrices.

Main Methods:

  • Literature review and database search (IAEA database highlighted).

Related Experiment Videos

  • Analysis of available thorium reference materials across various matrices.
  • Summary of expert discussions from the '1st European Workshop on the Analysis of Thorium in Workplace Materials'.

    • Main Results:

    • An overview of available thorium reference materials in different matrices, sources, and costs is presented.
    • The IAEA database is identified as a key resource for finding thorium RMs.
    • A significant need for new RMs, particularly for workplace materials, was identified.

    Conclusions:

    • The availability of reference materials is critical for accurate thorium analysis.
    • Existing resources like the IAEA database are valuable for identifying thorium RMs.
    • There is an urgent requirement for the development of new reference materials for thorium in workplace settings.