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Related Concept Videos

Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
 Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing nebulizer...

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Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level
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Proficiency test for clearance mixed-nuclide samples.

Chin-Hsien Yeh1, Ming-Chen Yuan, Bor-Jing Chang

  • 1Institute of Nuclear Energy Research, No. 1000, Wunhua Road, Jiaan Village, Longtan Township, Taoyuan County 32546, Taiwan, ROC. chyeh@iner.gov.tw

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|March 24, 2012
PubMed
Summary
This summary is machine-generated.

In 2010, a proficiency test assessed mixed-nuclide sample analysis. All laboratories successfully met performance criteria, demonstrating accurate measurement of Cobalt-60 and Cesium-137 in various sample types.

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Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
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Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
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Published on: November 9, 2015

Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Nuclear Science

Background:

  • Proficiency testing is crucial for validating analytical methods in radiation monitoring.
  • Accurate measurement of mixed-nuclide samples is essential for environmental safety and regulatory compliance.

Purpose of the Study:

  • To evaluate the performance of laboratories in measuring mixed-nuclide samples.
  • To assess the accuracy and reliability of different counting systems for radionuclide analysis.

Main Methods:

  • Participants analyzed box- and drum-shaped samples containing Cobalt-60 and Cesium-137.
  • Measurements were performed using plastic scintillator counting systems and HPGe spectrometer systems.
  • Results were compared against established reference values.

Main Results:

  • All participating laboratories successfully passed the proficiency test, meeting the E(n)≦1 requirement.
  • Measurement discrepancies ranged from -25% to 50% relative to reference values.
  • Both plastic scintillator and HPGe systems yielded acceptable results.

Conclusions:

  • The proficiency test confirmed the capability of participating laboratories in accurately measuring mixed-nuclide samples.
  • The study validates the effectiveness of the employed measurement techniques for clearance monitoring.