Determination of the O/M ratios of polynary uranium oxides by Ce(IV)-Fe(II) back titration after dissolution in mixed sulphuric and phosphoric acids

Takeo Fujino, Nobuaki Sato, Kohta Yamada

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Uranium (IV) in polynary uranium oxides is determined after the solid has been dissolved in a warm mixed solution of sulphuric and phosphoric acids containing excess Ce(IV). The latter is titrated with a Fe(II) standard solution using ferroin as indicator. This method is especially effective for (mixed) uranium oxides which are difficult to dissolve in hot Ce(IV) sulphuric acid. The standard deviation of the determined x value in polynary oxides is estimated to be below ± 0.004 for samples of 10-30 mg.

Original languageEnglish
Pages (from-to)374-375
Number of pages2
JournalFresenius' journal of analytical chemistry
Volume354
Issue number3
DOIs
Publication statusPublished - 1996 Feb 1

ASJC Scopus subject areas

  • Biochemistry

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