抄録
A clay mineral, greensand, was used as an ion exchanger for the collection of cesium or the removal of radioactive cesium in sea water. Cesium was quantitatively absorbed on a greensand column from volumes of sea water up to 350 times the volume of the column, when sea water was passed through at a specific velocity of about 7. By the use of the solution of 12% acetic acid and 12% ammonium acetate as elluant, 82% of cesium absorbed on the column was recovered in the effluent.
