Comparison of the Davies and Gray titrimetric method with potassium dichromate and ceric titrants

E. M. Wylie, L. M. Colletti, L. F. Walker, E. J.W. Lujan, K. Garduno, K. J. Mathew

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The modified New Brunswick Laboratory (NBL) Davies and Gray titrimetry method uses potassium dichromate standard 136-f from the National Institute of Standards and Technology for calibration. However, the presence of chromium in the resulting waste stream makes the disposal of waste from this procedure costly. The Actinide Analytical Chemistry (C-AAC) group at Los Alamos National Laboratory investigated and transitioned to a cerium based titrant as an alternative. We present the first long-term analytical study using this ceric-based titration method and compare it with NBL results based on the more-widely used dichromate titrimetric method.

Original languageEnglish
Pages (from-to)227-233
Number of pages7
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume318
Issue number1
DOIs
StatePublished - Oct 1 2018
Externally publishedYes

Keywords

  • Certified reference materials
  • Davies and Gray
  • Nuclear safeguards
  • Titrimetry
  • Traceability
  • Uranium assay

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