title: Combustion/absorption process for the separation of14C and3H in radwastes released from nuclear power plants and their analysis.
abstract: Radioactivities of3H and14C in spent radioactive ion exchange resins and spent radioactive lubricant oils released from nuclear power plants, has been determined using a combustion and sorption method (combustion method). The liquid scintillation counting (LSC) spectra showed that the interference of other radionuclides has not significantly affected the determination of radioactivities of3H and14C in the radwaste samples. The chemical structure of14CO2, which originated from the combustion of radwastes, trapped14C sorbent has been investigated using Fourier transform infrared spectroscopy (FT-IR). FT-IR study showed interesting results that peaks for uncoupled CO2and carbonic amide appeared at FT-IR spectra of CO2high-absorbed14C sorbents, while the peak for carbamate was only observed at the spectra of CO2low-absorbed sorbents. During the CO2sorption in14C sorbent, temperature and viscosity of the sorbent increased owing to decrease of enthalpy and increase of apparent molecular weight of the sorbent caused by the bonding formation between sorbent molecules.
authors.affiliation: Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea. Electronic address: ygko@kaeri.re.kr.
authors.forename: Young Gun
authors.initials: YG
authors.lastname: Ko
authors.affiliation: Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea.
authors.forename: Chang-Jong
authors.initials: CJ
authors.lastname: Kim
authors.affiliation: Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea.
authors.forename: Young Hyun
authors.initials: YH
authors.lastname: Cho
authors.affiliation: Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea.
authors.forename: Kun Ho
authors.initials: KH
authors.lastname: Chung
authors.affiliation: Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea.
authors.forename: Mun Ja
authors.initials: MJ
authors.lastname: Kang
keywords: C-14; CO(2) sorbent; Combustion/absorption method; Radwastes; Tritium