title: Recovery of 18F from [18O] water by electrochemical method.
abstract: An electrochemical method for producing 18F sources for the slow positron beam was applied to the recovery of 18F from H2(18)O water. The 18F of activities 150-227 mCi (5.55-8.40 GBq) was electro-deposited on a graphite rod and then emitted into pure water. The best result of the efficiency for the electro-deposition for 5 min was 97% and that for the electro-emission for 5 min was 89%. The H2(18)O water is expected to be reused much more easily by this method than by the ion exchange resin method. The metal impurities contained in the 18F solution were considerably reduced by using this method.
authors.affiliation: The Institute of Physical and Chemical Research, Wako-shi, Saitama, Japan. fsaito@postman.riken.go.jp
authors.forename: F
authors.initials: F
authors.lastname: Saito
authors.forename: Y
authors.initials: Y
authors.lastname: Nagashima
authors.forename: T
authors.initials: T
authors.lastname: Kurihara
authors.forename: N
authors.initials: N
authors.lastname: Suzuki
authors.forename: J
authors.initials: J
authors.lastname: Kim
authors.forename: L
authors.initials: L
authors.lastname: Wei
authors.forename: Y
authors.initials: Y
authors.lastname: Itoh
authors.forename: A
authors.initials: A
authors.lastname: Goto
authors.forename: T
authors.initials: T
authors.lastname: Hyodo