Abstract
The effect of pH on the percent extraction of vanadium(V), iron(II), cobalt(II), nickel(II), copper(II), molybdenum(VI), tungsten(VI) and uranium(VI) by α-benzoinoxime in different solvents has been studied. The maximum recovery is not appreciably affected by the nature of the solvent, but occurs at different pH values for different metals. The pH corresponding to maximum extraction increases with increasing hydrolysis pK of the species in aqueous solution, and decreases with increasing stability constant of the complexes formed. Alpha-benzoinoxime allows the separation of these metal ions into three groups: V(V), Mo(VI) and W(VI) are extracted at pH=2, U(VI) at pH=5, Fe(II), Cu(II), Co(II) and Ni(II) at around pH=10.
Similar content being viewed by others
References
G. GOLDSTEIN, D. L. MANNING, O. MENIS, Anal. Chem., 30 (1958) 539.
C. L. LUKE, Anal. Chim. Acta, 34 (1966) 302.
H. J. HOENES, K. G. STONE, Talanta, 4 (1960) 250.
P. Y. PENG, E. B. SANDELL, Anal. Chim. Acta, 29 (1963) 325.
R. O. KOROB, I. M. COHEN, O. E. AGATIELLO, J. Radioanal. Nucl. Chem., 34 (1976) 329.
C. L. LUKE, Anal. Chim. Acta., 37 (1967) 267.
G. CHARLOT, Dosage absorptiométriques des éléments minéraux, 3rd ed., Masson, Paris, 1978.
S. BOUTAMINE, Z. HANK, M. MEKLATI, J. Soc. Alg. Chim, 2 (1992) 83.
C. A. DEGUELDRE, M. MEKLATI, J. Less Common Metals, 97 (1984) 11.
G. M. RITCEY, A. W. ASHBROOK, Solvent Extraction. Principles and Applications to Process Metallurgy. Part I, Elsevier, Amsterdam, 1984.
F. A. COTTON, G. WILKINSON, Advanced Inorganic Chemistry, 3rd ed., John Wiley, New York, 1972.
J. BURGESS, Metal Ions in Solution, Ellis Horwood, Ltd. Chichester, 1978.
S. DJEBBAR-SID, O. BENALI-BAITICH, Synth. React. Inorg. Met.-Org. Chem., 23 (1993) 1693.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Boutamine, S., Hank, Z., Meklati, M. et al. Alpha-benzoinomixe: Extracting agent for uranium(VI), tungsten(VI), molybdenum(VI) and some transition metals of the iron family. Journal of Radioanalytical and Nuclear Chemistry, Articles 185, 347–353 (1994). https://doi.org/10.1007/BF02041307
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02041307