Rapid Separation of Inorganic Anions by Smaller Size Electrophoretic Apparatus

Abstract

Rapid separation of some 20 inorganic anions was examined using a small-scale electrophoretic apparatus (16×10×5 cm) with different supporting substances carriers such as thin-layer Chromatosheet (Eastman Kodak Co., silicagel, 6.5×2 cm) and filter paper (Toyo Roshi No. 51, 6.5×2 cm). The electrophoresis was carried out for 5 min with 300 V/6.5 cm, using 0.05N sodium carbonate as the electrolytic solution and the sample was spotted at 1 cm from the strip end (cathode side). These results were shown as relative mobility of inorganic anions against IO₃^-. Electropherograms on the Chromatosheet were compact and clear, except for I^-, IO₃^-, and IO₄^-, which separated only on the filter paper.