Extraction-chromatographic separation of uranium from fission products was performed using undiluted tributyl phosphate sorbed
on Chromosorb W as a stationary phase, and nitric acid (1: 3) as a mobile phase. Most of the fission products that contributed
greatly to the radiation level of the sample passed through the column; this effected considerable decontamination. Uranium
retained on the column was quantitatively recovered by elution with water.