Application of extractive liquid scintillation spectrometry for rapid determination of uranium

A radiochemical technique for estimation of uranium concentration and 234 U/ 238 U isotopic ratios by direct extraction of uranium with Bis (2-ethylhexyl) phosphate (HDEHP) in toluene at an optimized pH of 2–2.5 with an efficiency of 95–99 % was standardized. The extractant also acted as a scintilla...

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Veröffentlicht in:	Journal of radioanalytical and nuclear chemistry 2016-09, Vol.309 (3), p.1049-1057
Hauptverfasser:	Reddy, Priyanka J., Pulhani, Vandana, Dhole, S. D., Bhade, S. P. D., Anilkumar, S., Kolekar, R. V., Singh, Rajvir
Format:	Artikel
Sprache:	eng
Schlagworte:	Alpha rays Chemistry Chemistry and Materials Science Diagnostic Radiology Hadrons Heavy Ions Inorganic Chemistry Isotopes Measurement Nuclear Chemistry Nuclear Physics Phosphates Physical Chemistry Radiation Radiochemical separation Reference materials Scientific imaging Scintillation Spectrometry Spectroscopy Spectrum analysis Toluene Uranium
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Zusammenfassung:	A radiochemical technique for estimation of uranium concentration and 234 U/ 238 U isotopic ratios by direct extraction of uranium with Bis (2-ethylhexyl) phosphate (HDEHP) in toluene at an optimized pH of 2–2.5 with an efficiency of 95–99 % was standardized. The extractant also acted as a scintillator for measurement of alpha radiations by liquid scintillation spectrometer (LSS). The method was validated by estimating the ratios of 234 U/ 238 U in certified reference materials like, IAEA RGU-1, Depleted uranium, Ammonium di-uranate samples and ore samples from different locations in India. Conventional radiochemical separation and alpha spectrometry of electroplated source was used to compare and ascertain the isotopic ratios of uranium.
ISSN:	0236-5731 1588-2780
DOI:	10.1007/s10967-016-4698-4