Spectrophotometric determination of plutonium in highly radioactive liquid waste using an internal standardization technique with neodymium(III)

Naoki Surugaya, Shigeo Taguchi, Soichi Sato, Masaru Watahiki, Toshiaki Hiyama

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A simple and rapid spectrophotometric method has been developed for the determination of Pu in highly radioactive liquid waste. This method uses Nd(III) as an internal standard, which enables us to determine the concentration of Pu and to authenticate the whole analytical scheme as well. A Nd(III) standard mixed with a sample solution and Pu was quantitatively oxidized to Pu(VI) with Ce(IV) in a nitric acid medium, having the maximum absorbance at 830 nm. A spectrophotometric measurement of Pu(VI) was subsequently performed to determine the concentration compared with the maximum absorbance of Nd(III) at 795 nm. It was estimated that the relative expanded uncertainty for a real sample is less than 10%. The limit of detection was calculated to be 1.8 mg/L (3σ). The proposed method was also validated through comparison experiments with isotope dilution mass spectrometry, and was successfully applied to analysis for nuclear waste management at spent nuclear fuel reprocessing plants. 2008

Original languageEnglish
Pages (from-to)377-380
Number of pages4
Journalanalytical sciences
Volume24
Issue number3
DOIs
Publication statusPublished - Mar 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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