Removal of Sodium from Natural Mineral Water by Immersion on Polyantimonic (V) Add with Sflica Gel Carrier

The deals with the removal of Na⁺ from natural mineral water by immersion on polyantimonic (Ⅴ) acid supported on silica gel is developed. Removing Na⁺ efficiency of adsorbent is more than 99%. 1 mol/L HNO₃+1 mol/L NH₄NO₃ is used as regeneration solution. ion selective electrode method of "Rittner and Ma" is applied to determine the amount of Na⁺. This method has been shown to be simple and reliable, the results are satisfactory.