Extraction of Th(Ⅳ) in Nitric Acid Solution Using Bis-Succinamide as Extractant

ZHANG Fang; HUANG Qing-gang; WU Qiang; FU Xuan; YAN Ze-yi

doi:10.7538/hhx.2019.41.04.0386

Journal of Nuclear and Radiochemistry > 2019 > 41(4): 386-390. > DOI: 10.7538/hhx.2019.41.04.0386

ZHANG Fang, HUANG Qing-gang, WU Qiang, FU Xuan, YAN Ze-yi. Extraction of Th(Ⅳ) in Nitric Acid Solution Using Bis-Succinamide as Extractant[J]. Journal of Nuclear and Radiochemistry, 2019, 41(4): 386-390. DOI: 10.7538/hhx.2019.41.04.0386

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Extraction of Th(Ⅳ) in Nitric Acid Solution Using Bis-Succinamide as Extractant

1.
School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
2.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

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Abstract

Three extractants containing bis-succinamide(BisSCA) skeleton have been synthesized and identified by NMR and HRMS. The extraction behavior of Th(Ⅳ) using the present extractants was evaluated in nitric acid solution. The dependence of the extraction distribution ratios on the concentrations of aqueous nitric acid, extractant and salting-out agent was investigated. Slope analysis suggests the formation of major mono-solvated species between Th(Ⅳ) and BisSCA. The comparative extraction of Th(Ⅳ) and Eu(Ⅲ) demonstrates that the excellent separation factor is obtained in 166.6.
- bis-succinamide,
- extraction,
- Th(Ⅳ),
- Eu(Ⅲ),
- nitric acid

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