| 摘要 |
PURPOSE:To remove impurity ion sticked to metal Se by mixing precipitated metal Se with ion exchange resin and by washing the metal Se. CONSTITUTION:The washing of precipitated metal Se by ion exchange resin is done by separating resin and metal Se by means of centrifugation or the like after filling the precipitated metal Se into pure water containing a definite amount of ion exchange resion (H<+>, OH<->) and sufficiently mixing and stirring the precipitated metal Se and pure water and washing the metal Se. Then, decantation is performed by pure water upon desire. The amount of the ion exchange resin to be used is about H<+>: 200-500cc, OH<->: 400-1,000cc for 1kg of metal Se. |
