Plutonium thenoyltrifluoroacetone

After the stipulated leaching period, the waters were sampled before and after filtration through 0.05 ym Nuclepore filters and the oxidation-state distribution of plutonium in the filtrates was determined as follows PrF3 carrier precipitation for Pu(III) and (IV), PrF3 precipitation following NaHS03 reduction for total plutonium, and thenoyltrifluoroacetone (TTA) extraction... 

These extraction techniques can be made very efficient and selective by adjusting the oxidation state of the plutonium and other sample constituents. Common extraction methods specific for plutonium use 2-thenoyltrifluoroacetone (TTA), tetrapropylammonium trinitrate in isopropylacetone or triisooctylamine, cupferron in chloroform, tributylphoshphate, and tri-octylphosphine dioxide. Anion exchange methods with either nitric or hydrochloric acid solutions are commonly used. Cation exchange column methods are less frequently used (Brouns 1980)... 

Extractions involving the chelating agent thenoyltrifluoroacetone (TTA) in an organic solvent are particularly useful in the isolation of uranium, neptunium, and plutonium from nitric acid solutions some of the radiochemical milking experiments used to determine the... 

R. (1975) Comportement du plutonium trivalent lors de son extraction par la thenoyltrifluoroacetone. / Inorg. Nucl. 

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