To provide a method for manufacturing an aqueous solution containing indium having decreased metal impurities from an aqueous solution containing indium and the metal impurities in a simple manner and a method for decreasing the metal impurities of the aqueous solution containing the indium in a simple manner.
The aqueous solution is manufactured by bringing a raw aqueous solution containing the indium and the metal impurities and having a hydrogen ion concentration ranging from ≥1 to ≤12mol/L into contact with an anion exchange resin having a tertiary amino group as an exchange group. Also, the aqueous solution containing the indium and the metal impurities is decreased in the metal impurities by bringing the raw aqueous solution having the hydrogen ion concentration ranging from ≥1 to ≤12mol/L into contact with the anion exchange resin having the tertiary amino group as the exchange group.
FUJIWARA SHINJI
SAEGUSA KUNIO
TAKEDA KUNIHIKO
Toru Nakayama
Masayuki Enomoto
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