Method of separating and collecting 18F in 18O water

摘要

A method of separating and recovering ¹⁸F from ¹⁸O water at high purity and efficiency while maintaining the purity of the ¹⁸O water. By using a solid electrode (1) as an anode and a container (electrodeposition vessel) (2) made of platinum as a cathode, ¹⁸F in a solution (4) is electrodeposited on the solid electrode surface by applying a voltage. Then, by using the solid electrode (1) on which ¹⁸F is electrodeposited as a cathode and a container (recovery vessel) (5) holding pure water therein as an anode, ¹⁸F is recovered in the pure water by applying a voltage of opposite polarity to that of the electrodeposition. In this process, little ¹⁸O water is lost. The initial concentration of the ¹⁸O water is maintained even after the electrodeposition of ¹⁸F, so that the ¹⁸O water can be repeatedly used as an irradiation target for production of ¹⁸F.