Determination of oxygen-to-metal atomic ratio in mixed oxide fuel by non-dispersive infrared spectrophotometry after fusion in an inert gas atmosphere

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Abstract

A new method of analysis for the determination of the oxygen-to-metal atomic ratio (O/M) in a uranium-plutonium mixed oxide (MOX) fuel was developed. The sample and the nickel metal were fused in a graphite crucible in a resistance heating furnace under helium flowing through the system. The oxygen in the MOX fuel reacted quantitatively with the crucible graphite producing carbon monoxide, which was determined using non-dispersive infrared spectrophotometry (NDIR). The oxygen content in the MOX fuel was calculated from the analysis results of the carbon monoxide. The O/M ratios determined by the present method were in good agreement with those of the thermogravimetric method. The relative standard deviation was less than 0.20% for sintered MOX fuel. Only 30mg of sample was required, and the analysis time takes about 10min. No specific skills for glove-box work are necessary. The present method is applicable to sintered MOX fuels over a wide range of plutonium contents. Copyright (C) 1999 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)297-302
Number of pages6
JournalAnalytica Chimica Acta
Volume402
Issue number1-2
DOIs
Publication statusPublished - Dec 3 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

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