抄録
Separations of boron and magnesium respectively from iron were carried out by a simple procedure with a cation exchange resin “Diaion K”.
Boric acid in an acidic solution of the sample passed through the resin, while iron or other cations were all adsorbed by the resin. From the solution which passed through the resin, boron was determined titrimetrically or colorimetriclly.
Magnesium was adsorbed quantitatively with the resin even in the presence of tartaric acid, on the other hand iron passed through the resin, if 20 cc of 20% tartaric acid solution was added against 1 g of iron and the solution was adjusted to 200 cc and at pH 3. Then, magnesium was eleuted with ammonium chloride and determined gravimetrically as phosphate after separation of manganese and calcium.
