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

Journal Article · 22 August 2018 · Journal of Radioanalytical and Nuclear Chemistry

DOI: https://doi.org/10.1007/s10967-018-6129-1 · OSTI ID:1469553

Wylie, Ernest Miller  ^[1]; Colletti, Lisa Michelle ^[1]; Walker, Laurie F. ^[1]; Lujan, Elmer J. W. ^[1]; Garduno, Katherine ^[1]; Mathew, Kattathu Joseph ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

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. We report that 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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1469553
• Report Number(s): LA-UR-18-22775
• Journal Information: Journal of Radioanalytical and Nuclear Chemistry, Vol. 318, Issue 1; ISSN 0236-5731
• Publisher: SpringerCopyright Statement
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
Uranium Assay
Davies and Gray
titrimetry
nuclear safeguards
certified reference materials
traceability