| 摘要 |
<p>In the method of the present invention, in an aqueous solution 20 containing at least one type of ions (L) other than hydrogen ions and hydroxide ions, voltage is applied between an ion-adsorbing electrode 11 containing an electrically conductive material (C1) capable of adsorbing ions and an ion-adsorbing electrode 12 containing an electrically conductive material (C2) capable of adsorbing ions so that the ion-adsorbing electrode 11 serves as an anode. Thus the electrically conductive material (C1) is allowed to adsorb an anion contained in the aqueous solution 20 and the electrically conductive material (C2) is allowed to adsorb a cation contained in the aqueous solution 20. Subsequently, in a liquid 30 containing water, voltage is applied between either the ion-adsorbing electrode 11 or the ion-adsorbing electrode 12 and counter electrode 13 or 14, resulting in changing the pH of the liquid 30.</p> |
