| 摘要 |
PURPOSE:To control the elution and decomposition of an easily hydrolyzable functional group by bringing a chelate resin having an easily hydrolyzable group into contact with an eluent and a regenerating agent at a prescribed temp. CONSTITUTION:A chelate resin having an easily hydrolyzable group, wherein >=1 kind of metallic ions among III group metals U, V, Cd, Pb, Ni, Cu, Co and Mo are absorbed, is brought into contact with an eluent at <=15 deg.C. The above- mentioned chelate resin has a functional group consisting of an amidoxime or an ester coupling, and the resin is further brought into contact with a regenerating agent at <=15 deg.C when needed. Thus, the decomposition of the easily hydrolyzable functional group is suppressed when the chelate resin having the easily hydrolyzable functional group wherein the metallic ions are absorbed is eluted and regenerated. |
