Determination of uranium in uranyl nitrate raffinate generated through sodium di-uranate process

The paper discusses a method developed for the determination of uranium in uranyl nitrate raffinate (UNR) generated through sodium di-uranate (SDU) process using inductively coupled plasma atomic emission spectrometer (ICP-AES). High concentration of Na in UNR limits the direct determination of uran...

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Veröffentlicht in:	Journal of radioanalytical and nuclear chemistry 2017-12, Vol.314 (3), p.2129-2135
Hauptverfasser:	Gupta, S. N. V. M. S., Satyanarayana, G., Nayak, A. K., Misra, U. B., Rao, Y. Balaji, Babu, C. Phani, Kalyanakrishnan, G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Ammonium salts Atomic emission spectroscopy Carbonates Chemistry Chemistry and Materials Science Diagnostic Radiology Emission analysis Hadrons Heavy Ions Inductively coupled plasma Inorganic Chemistry Nuclear Chemistry Nuclear energy Nuclear Physics Physical Chemistry Sodium Trioctylphosphine oxide Uranium Uranium compounds
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Zusammenfassung:	The paper discusses a method developed for the determination of uranium in uranyl nitrate raffinate (UNR) generated through sodium di-uranate (SDU) process using inductively coupled plasma atomic emission spectrometer (ICP-AES). High concentration of Na in UNR limits the direct determination of uranium in ICP-AES. Therefore, selective extraction of uranium from UNR using tri- n -octyl-phosphine oxide (TOPO) and stripping by ammonium carbonate was followed. Effect of sodium on estimation of uranium is discussed. The method has been validated by standard recovery of spiked real time UNR samples with known amounts of uranium CRM (Merck-HC42984673). The developed method compared well with EDXRFS and Redox titrimetric methods.
ISSN:	0236-5731 1588-2780
DOI:	10.1007/s10967-017-5546-x