Journal article
Analysis of Urine for Pure Beta Emitters: Methods and Application
Radioecology and Tracer Studies, Radiation Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Radiation Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Bioassay for individual radionuclides is an essential and first step in estimation of radiation risk to nuclear facilities workers and people who are exposed to the contaminated environment in the event of a nuclear accident or radiological attack. Urine is a frequently used biological sample for this purpose.
Tritium and C-14 are important radionuclides for workers in nuclear reactors and radiopharmaceutical laboratories. A method for the determination of tritium and C-14 in organic and inorganic forms in urine has been developed. It involves activated charcoal absorption of organic matter followed by combustion to separate tritiated water from organically-bound tritium.
Inorganic C-14 from organically-bound C-14, the separated tritium and C-14 were measured using liquid scintillation counting. Iodine-129, a long-lived beta emitter, is normally released to the atmosphere during the operation of nuclear facilities, especially in reprocessing plants. The high concentration of iodine in the thyroid makes this radionuclide an important source of exposure to exposed populations.
A simple method has been developed in this work for the determination of I-129 in urine by anion exchange preconcentration, extraction purification and liquid scintillation counting. Using accelerator mass spectrometry, urine samples can be analyzed for low level I-129 in both organic and inorganic forms after active charcoal adsorption and solvent extraction separation.
Condensed water collected daily from the reactor hall in a Danish research reactor and monthly urine samples from the staff working in the reactor building were collected from 2003-2010 and analyzed using this method, and the results are presented and discussed. Health Phys. 101(2):159-169; 2011
Language: | English |
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Year: | 2011 |
Pages: | 159-169 |
ISSN: | 15385159 and 00179078 |
Types: | Journal article |
DOI: | 10.1097/HP.0b013e31821497c0 |
ORCIDs: | Hou, Xiaolin |