A method for producing an indium-containing aqueous solution having a
reduced amount of metal impurities is provided. A method for producing an
indium-containing aqueous solution having a reduced amount of metal
impurities which comprises bringing an aqueous solution containing indium
and metal impurities whose hydrogen ion concentration is adjusted at 0.5
mol/L to 3 mol/L into contact with a non-chelate ion-exchange resin to
remove the metal impurities, and a method for producing an
indium-containing aqueous solution having a reduced amount of metal
impurities which comprises bringing an aqueous solution containing indium
and metal impurities into contact with a chelate ion-exchange resin to
remove the metal impurities are provided.
_ um método para producing um indium-cont aqueous solução t um reduz quantidade metal impureza est forneç. _ um método para producing um indium-cont aqueous solução t um reduz quantidade metal impureza que compreend bringing um aqueous solução containing indium e metal impureza cujo hidrogênio íon concentração est ajust 0.5 mol/L 3 mol/L contat com um non-non-chelate ion-exchange resina remov metal impureza, e um método para producing um indium-cont aqueous solução t um reduz quantidade metal impureza que compreend bringing um aqueous solução containing indium e metal impureza contat com um chelate ion-exchange resina remov metal impureza est forneç. _
