Uranium complexes cupferron

Determination of uranium with cupferron Discussion. Cupferron does not react with uranium(VI), but uranium(IV) is quantitatively precipitated. These facts are utilised in the separation of iron, vanadium, titanium, and zirconium from uranium(VI). After precipitation of these elements in acid solution with cupferron, the uranium in the filtrate is reduced to uranium(IV) by means of a Jones reductor and then precipitated with cupferron (thus separating it from aluminium, chromium, manganese, zinc, and phosphate). Ignition of the uranium(IV) cupferron complex affords U308. 

ESR spectra, 511 Uranium(VI) complexes dioxoneocupferron, 512 Uranium hexaalkoxides physical properties, 347 Uranyl complexes cupferron, 512 formamide, 491 glycolic acid, 472 hexafluoroacetylacetone, 373, 377 photochemistry, 385 rearrangement, 384 maleic acid conformation, 467 neutral 1,3-diketones, 402 poly ketones, 399 Urea... 

Wang, J. and Setiadji, R. (1992). Selective determination of trace uranium by stripping voltammetry following adsorptive accumulation of the uranium cupferron complex. Anal. Chim. Acta 264, 205-211. 

Kefala G, Economou A, Voulgaropoulos A (2006) Adsorptive stripping voltammetric determination of trace uranium with a bismuth-fihn electrode based on the U(VI) -> U(V) reduction step of the uranium-cupferron complex. Electroanalysis 18 223... 

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