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Journal Articles

Extraction of uranium from simulated ore by the supercritical carbon dioxide fluid extraction method with nitric acid-TBP complex

Dung, L. T. K.*; Imai, Tomoki*; Tomioka, Osamu; Nakashima, Mikio; Takahashi, Kuniaki; Meguro, Yoshihiro

Analytical Sciences, 22(11), p.1425 - 1430, 2006/11

https://doi.org/10.2116/analsci.22.1425
 Times Cited Count：7 Percentile：23.21(Chemistry, Analytical)

Supercritical fluid extraction (SFE) method using supercritical CO$$_2$$ fluid containing a complex of HNO$$_3$$-tri-$$n$$-butyl phosphate (TBP) as an extractant was applied to extract uranium from a several uranyl phosphate compounds and simulated uranium ores. Extraction method consisting of a static and a dynamic extraction processes was established and experimental condition such as pressure, temperature, and extraction time were optimized. It was found that uranium could be efficiently extracted from both of the uranyl phosphates and simulated ores by the SFE method and then it was demonstrated that SFE was useful as a pretreatment method for uranium analysis in ores.

Oral presentation

Supercritical carbon dioxide extraction of uranium-phosphate compound

Meguro, Yoshihiro; Tomioka, Osamu; Dung, L. T. K.*; Takahashi, Kuniaki

no journal, , 

no abstracts in English

Oral presentation

Supercritical carbon dioxide extraction of uranium from ore for uranium analysis

Meguro, Yoshihiro; Tomioka, Osamu; Dung, L. T. K.*; Takahashi, Kuniaki

no journal, , 

no abstracts in English

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