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.
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