US 12,013,499 B2
Method for simultaneous analysis of radiocarbon and tritium
Hong Joo Ahn, Sejong-si (KR); Hwan Seo Park, Daejeon (KR); Jong Kwang Lee, Daejeon (KR); Ki Rak Lee, Daejeon (KR); and Kwang Jae Son, Sejong-si (KR)
Assigned to Korea Atomic Energy Research Institute, Daejeon (KR)
Filed by KOREA ATOMIC ENERGY RESEARCH INSTITUTE, Daejeon (KR)
Filed on Oct. 4, 2022, as Appl. No. 17/959,811.
Claims priority of application No. 10-2021-0131637 (KR), filed on Oct. 5, 2021.
Prior Publication US 2023/0103847 A1, Apr. 6, 2023
Int. Cl. B01D 53/00 (2006.01); B01D 53/04 (2006.01); G01N 1/40 (2006.01); G01N 23/2202 (2018.01); G01T 1/167 (2006.01)
CPC G01T 1/167 (2013.01) [B01D 53/04 (2013.01); G01N 1/4022 (2013.01); G01N 23/2202 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for simultaneous analysis of radiocarbon and tritium, the method comprising:
(i) mixing a radioactive waste sample containing a radiocarbon nuclide and tritiated water, and an oxidizing agent;
(ii) oxidizing the radiocarbon nuclide in the radioactive waste sample to a gas containing an oxide of the radiocarbon nuclide by the oxidizing agent while suppressing volatilization of compounds containing gamma radionuclides other than the radiocarbon nuclide and tritium;
(iii) discharging the gas containing an oxide of the radiocarbon nuclide by injecting an inert gas to the mixture;
(iv) vaporizing and discharging the tritiated water in the mixture; and
(v) analyzing radioactivity of radiocarbon and tritium from the discharged gas containing an oxide of the radiocarbon nuclide and tritiated water.