[en] A spectrophotometric method for the extraction and determination of microgram amounts of Ce(IV) is described on the basis of color reaction with 1-(2-theonyl)-3,3,3-trifluoroacetone (TTA) in benzene. An oxidising agent, benzoyl peroxide was used as stabilizer. The bright red colored Ce(IV)-TTA solution (in benzene) follows Beer's law at 414 nm over the range of 2-16 mu g Ce(IV) per ml of complex and stable for 2 hrs. The effect of adverse ions has been studied and tolerable amounts of these ions have been described. The method is reproducible to within +- 2% and offer a simple procedure for extraction and determination of Ce(IV) in aqueous as well as organic phase. (author)