| 摘要 |
<p>PURPOSE:To efficiently fractionate and recover Ga and In with high purity by using a chelate resin having a formation group of specific structure and selectively adsorbing and separating the ions of Ga and In from the mixed ion soln. of heavy metals. CONSTITUTION:The chelate resin having the residual group of the N,N,N',N'- tetraphosphonomethyl-diethylene triamine expressed by the formula as a multidentate ligand is prepd. The Ga (III) ions and In (III) ions are selectively adsorbed and separated by a column method, etc., from the mixed metallic ion-contg. soln. which contains the Ga (III) ions or In (III) ions or both thereof and heavy metallic ions such as Cu, Co, Ni and Zn by using the above-mentioned chelate resin. The chelate resin has high adsorptive power and simple substances of metals such as Ga and In useful for electronic industry are efficiently recovered by the above-mentioned method.</p> |
