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Citation: Yuan Liming, Song Wenjun. EXTRACTION OF THORIUM WITH 4, 4'-NONANEDIOYL-BIS-(1-PHENYL-3-METHYL-5-PYRAZOLONE)(H₂A)[J]. Chinese Journal of Applied Chemistry, ;1989, 6(6): 22-26. shu

EXTRACTION OF THORIUM WITH 4, 4'-NONANEDIOYL-BIS-(1-PHENYL-3-METHYL-5-PYRAZOLONE)(H₂A)

Yuan Liming ,
Song Wenjun

1.
Department of Chemistry, Yunnan University, Kunming

Received Date: 30 November 1988
Available Online: 30 June 1989

The extraction of thorium in nitric acid by H₂A-CHCl₃ solution has been studied. The extraction equilibrium constant is found to be 1.03×10⁶. The pH_1/2 of Th(Ⅳ), Fe(Ⅲ),Co(Ⅱ), Ni(Ⅱ), Zn(Ⅱ), Cu(Ⅱ), Pb(Ⅱ), U(Ⅵ), La(Ⅲ) and Yb(Ⅲ) in nitric acid by H₂A-CHCl₃ are determined. A method for separating Th(Ⅳ) in monazite is proposed.
- Extraction,
- Thorium,
- Pyrazolidone,
- Metal ion chelating agent
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EXTRACTION OF THORIUM WITH 4, 4'-NONANEDIOYL-BIS-(1-PHENYL-3-METHYL-5-PYRAZOLONE)(H2A)

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EXTRACTION OF THORIUM WITH 4, 4'-NONANEDIOYL-BIS-(1-PHENYL-3-METHYL-5-PYRAZOLONE)(H₂A)