title: Medically used radionuclides (131I, 99mTc) in the urban sewage system: the case of the Daejeon metropolitan city, Korea.
abstract: In order to assess the behaviour of radioactivity (specifically (131)I concentrations in wastewater and sludge at sewage treatment plant) discharged into municipal sewage by therapy patients receiving treatment, the use of radiopharmaceuticals in four hospitals was quantitatively evaluated and the patients were classified by their residence. (131)I concentrations were estimated using a simple assumption model for radioiodine treatments of 94 patients, and measured by HPGe in inflow points, respectively. A good agreement was found between (131)I concentrations estimated with the model and those measured in the inflow points at the sewage treatment plant.
authors.affiliation: Korea Institute of Nuclear Safety, 34, Gwahak-ro, Yuseong-gu, Daejeon 305-338, Republic of Korea. hafadai@kins.re.kr
authors.forename: Byung-Uck
authors.initials: BU
authors.lastname: Chang
authors.forename: Seok-Won
authors.initials: SW
authors.lastname: Choi
authors.forename: Myeong Han
authors.initials: MH
authors.lastname: Song
authors.forename: Jae-Seong
authors.initials: JS
authors.lastname: Lee
authors.forename: Yongjae
authors.initials: Y
authors.lastname: Kim
mesh_terms: D007457:Iodine Radioisotopes / Q000032:analysis*; D007723:Korea; D019275:Radiopharmaceuticals / Q000032:analysis*; D012722:Sewage / Q000032:analysis*; D013667:Technetium / Q000032:analysis*
chemical_list: D007457:Iodine Radioisotopes; D019275:Radiopharmaceuticals; D012722:Sewage; D013667:Technetium