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BỘ MÔN VẬT LÝ HẠT NHÂN - KỸ THUẬT HẠT NHÂN

Optimization of uranium separation using silica gel impregnated tri‐n‐butyl phosphate for alpha spectrometry analysis of soil samples

 Van Thang Nguyen, Xuan Son Vi, Nguyen Phong Thu Huynh, Cong Hao Le

Abstract:

Silica gel impregnated tri-n-butyl phosphate was used as a chromatography column for extraction of uranium radioisotopes from soil samples. Diluted HNO3 and H2SO4 were used as the mobile and striping phases, respectively. In these stages, concentrations of HNO3 and H2SO4 solutions for the uranium extraction yield were optimized. We found that 5 M HNO3 and 3 M H2SO4 were the best solutions for uranium separation. Effects of electrodeposition conditions on uranium deposition yield were considered. Results showed that current of 1.5 mA, deposition time of 75 min, pH 2 and electrode gap of 1.5 cm were optimal conditions for electrodeposition.

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