title: Simple determination of (99)Tc in radioactive waste using Tc extraction disk and imaging plates.
abstract: A simple method was developed for determination of (99)Tc in low-level radioactive waste: Technetium-99 retained by a solid phase extraction disk was directly measured with imaging plates system. It was found that more than 97% of Tc were retained by the disk from a solution of pH 2 to 12, whereas depth profile of Tc in the disk, which greatly influences the counting efficiency, depended on solution pH. The present method was successfully applied to actual radioactive liquid waste samples arising from nuclear research facilities.
authors.affiliation: Nuclear Cycle Backend Directorate, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai-mura, Ibaraki 319-1195, Japan. kameo.yutaka@jaea.go.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Kameo
authors.forename: A
authors.initials: A
authors.lastname: Katayama
authors.forename: A
authors.initials: A
authors.lastname: Hoshi
authors.forename: T
authors.initials: T
authors.lastname: Haraga
authors.forename: M
authors.initials: M
authors.lastname: Nakashima
mesh_terms: D009688:Nuclear Reactors; D011850:Radioactive Waste / Q000032:analysis*; D052616:Solid Phase Extraction; D013667:Technetium / Q000032:analysis* / Q000302:isolation & purification; D014875:Water Pollutants, Radioactive / Q000032:analysis*
chemical_list: D011850:Radioactive Waste; D014875:Water Pollutants, Radioactive; D013667:Technetium