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Fluorimetric estimation of uranium at ultra trace level in reactor grade sodium

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Abstract

A simple method has been developed for the estimation of uranium in reactor grade sodium without the removal of sodium using time gated luminescence with pulsed lamp. Samples are prepared after oxidizing the sodium in air followed by dissolution in H2SO4. Luminescence of uranium is measured in 2 M H3PO4 + 1 M H2SO4 medium. Using this method, the concentration of uranium in synthetic sodium sample was determined to be 0.2 µg/g. The limit of detection of uranium in bulk sodium was found to be 0.016 µg/g.

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Authors and Affiliations

  1. Analytical Chemistry and Spectroscopy Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, India

    Satendra Kumar, S. Maji & K. Sundararajan

  2. Materials Chemistry Division, Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, India

    M. Venkatesh & Rajesh Ganesan

  3. Homi Bhabha National Institute, Indira Gandhi Centre for Atomic Research, Kalpakkam, 603 102, India

    Rajesh Ganesan & K. Sundararajan

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  1. Satendra Kumar
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  2. S. Maji
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  3. M. Venkatesh
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  4. Rajesh Ganesan
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  5. K. Sundararajan
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Kumar, S., Maji, S., Venkatesh, M. et al. Fluorimetric estimation of uranium at ultra trace level in reactor grade sodium. J Radioanal Nucl Chem 325, 191–198 (2020). https://doi.org/10.1007/s10967-020-07206-5

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