title: [Development of a simple quantitative method for the strontium-89 concentration of radioactive liquid waste using the plastic scintillation survey meter for beta rays].
abstract: Strontium-89 (89Sr: pure beta, E; 1.495 MeV-100%, halflife: 50.5 days) chloride is used as pain relief from bone metastases. An assay of 89Sr is difficult because of a pure beta emitter. For management of 89Sr, we tried to evaluate a simple quantitative method for the 59Sr concentration of radioactive liquid waste using scintillation survey meter for beta rays. The counting efficiency of the survey meter with this method was 35.95%. A simple 30 minutes measurement of 2 ml of the sample made the quantitative measurement of 89Sr practical. Reducing self-absorption of the beta ray in the solution by counting on the polyethlene paper improved the counting efficiency. Our method made it easy to manage the radioactive liquid waste under the legal restrictions.
authors: Department of Radiology, Jikei University School of Medicine Hospital.
authors: Hiroto
authors: H
authors: Narita
authors: Yuusuke
authors: Y
authors: Tsuchiya
authors: Kiyoshi
authors: K
authors: Hirase
authors: Mayuki
authors: M
authors: Uchiyama
authors: Masahiro
authors: M
authors: Fukushi
mesh_terms: D001610:Beta Particles; D006207:Half-Life; D010969:Plastics; D011834:Radiation Monitoring / Q000379:methods; D011850:Radioactive Waste / Q000032:analysis*; D019275:Radiopharmaceuticals / Q000032:analysis*; D012588:Scintillation Counting / Q000295:instrumentation / Q000379:methods*; D013326:Strontium Radioisotopes / Q000032:analysis*
chemical_list: D010969:Plastics; D011850:Radioactive Waste; D019275:Radiopharmaceuticals; D013326:Strontium Radioisotopes