| 摘要 |
There is described a method for purifying Cs-131. The method comprises the steps of: (a) dissolving neutron-irradiated barium comprising barium and Cs-131, in a solution comprising an acid; (b) concentrating the solution to leave solution and solids; (c) contacting the solution and solids with a solution of 68-wt% to at least 90-wt% nitric acid, whereby Cs-131 is dissolved in the acid solution and barium is precipitated as a solid; and (d) separating the solids from the acid solution containing the Cs-131, thereby purifying the Cs-131. |
