Determination of trace amounts of plutonium in low-active liquid wastes from spent nuclear-fuel reprocessing plants by flow injection-based solid-phase extraction/electrochemical detection system

Shigeo Taguchi, Masahiko Yamamoto, Naoki Surugaya, Akira Kurosawa, Toshiaki Hiyama, Tatsuhiko Tanaka

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A flow injection-based electrochemical detection system coupled to a solid-phase extraction column was developed for the determination of trace amounts of plutonium in low-active liquid wastes from spent nuclear-fuel reprocessing plants. The oxidation state of plutonium in a sample solution was adjusted to Pu(VI) by the addition of silver(II) oxide. A sample solution was made up in 3 mol L-1 HNO3 and loaded onto a column packed with UTEVA® with 3 mol L-1 HNO3 as the carrier. Plutonium(VI) was adsorbed onto the resin, and interfering elements were removed by rinsing the column with 3 mol L-1 HNO3. Subsequently, the adsorbed Pu(VI) was eluted with 0.01 mol L-1 HNO3, and then introduced directly into the flow-through electrolysis cell with boron-doped diamond electrode. The eluted Pu(VI) was detected by an electrochemical amperometric method at a working potential of 0.1 V (vs. Ag/AgCl). The current produced on reduction of Pu(VI) was continuously monitored and recorded. The plutonium concentration was calculated from the relationship between the peak area and concentration of plutonium. The relative standard deviation of ten analyses was 1.1% for a plutonium solution of 25 μg L -1 containing 50 ng of Pu. The detection limit calculated from three-times the standard deviation was 0.82 μg L-1 (1.6 ng of Pu).

Original languageEnglish
Pages (from-to)435-441
Number of pages7
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume288
Issue number2
DOIs
Publication statusPublished - May 1 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

Fingerprint Dive into the research topics of 'Determination of trace amounts of plutonium in low-active liquid wastes from spent nuclear-fuel reprocessing plants by flow injection-based solid-phase extraction/electrochemical detection system'. Together they form a unique fingerprint.

Cite this