Automated gravimetric sample pretreatment using an industrial robot for the high-precision determination of plutonium by isotope dilution mass spectrometry

Naoki Surugaya, Toshiaki Hiyama, Masaru Watahiki

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A robotized sample-preparation method for the determination of Pu, which is recovered by extraction reprocessing of spent nuclear fuel, by isotope dilution mass spectrometry (IDMS) is described. The automated system uses a six-axis industrial robot, whose motility is very fast, accurate, and flexible, installed in a glove box. The automation of the weighing and dilution steps enables operator-unattended sample pretreatment for the high-precision analysis of Pu in aqueous solutions. Using the developed system, the Pu concentration in a HNO 3 medium was successfully determined using a set of subsequent mass spectrometric measurements. The relative uncertainty in determining the Pu concentration by IDMS using this system was estimated to be less than 0.1% (k = 2), which is equal to that expected of a talented analyst. The operation time required was the same as that for a skilled operator. 2008

Original languageEnglish
Pages (from-to)739-744
Number of pages6
Journalanalytical sciences
Volume24
Issue number6
DOIs
Publication statusPublished - Jun 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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