2009 Volume 58 Issue 7 Pages 469-475
Tritium enrichment is a important determination method of the tritium concentration in an environmental water. However, more advanced method is required because the tritium separation factor (βa) obtained by the electrolysis using solid polymer electrolyte membrane (SPE electrolysis method) is not so large. We therefore focused on effects of magnetic field and temperature on electrolysis enrichment, and carried out some experiments as below. The electrolysis cell of the electrolysis-apparatus based on the SPE electrolysis method was set as follows:the direction of electrolysis current was set at right angle (orthogonal condition) to the magnetic field. Then the electrolysis was carried out at both a magnetic flux density in the range of 0-5T and a constant temperature in the range of 25-35°C. Consequently, the followings have been clarified. (1)βa is affected by the magnetic field at the orthogonal condition. (2)βa increases with increasing the magnetic field (0-4T). (3)Both the magnetic field and the temperature affect βa in the orthogonal condition. (4)The effect of temperature on βa may relate to the influence of the magnetic field and the temperature dependence of the dissociation of HTO.