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  • 1 Fudan University Radiochemistry Laboratory, Department of Nuclear Science Shanghai People's Republic of China
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A study on solvent extraction of cerium/III/ ion with 1-/2-pyridylazo/-2-naphthol /PAN or HL/ in chloroform from perchloric acid solution is described. The effect of equilibrium time, the pH of the aqueous phase and the concentration centration of extractant in organic phase on the extraction efficiency of cerium/III/ has been studied. The results show that the mechanism of extraction reaction is 3Ce /aq/3+ + 3HL/o/ CeL3/o/ + 3H +/aq/