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Biokinetic models for rats exposed to repeated inhalation of uranium: implications for the monitoring of nuclear workers


Journal title : Radioprotection
Volume : 41
Issue : 1
Pagination : 85-96
Publication date : 01/03/2006

Document type > *Article de revue

Keywords >

Research Unit > IRSN/DRPH/SRBE/LRTOX

Authors > BLANCHARDON Eric, CHAZEL Valérie, CLARAZ-DONNADIEU Marie, MONLEAU Marjorie, PAQUET François

Publication Date > 01/03/2006

Summary

For dose assessment following chronic or accidental inhalation of radioactive aerosols, the dosimetric models of the International Commission on Radiological Protection (ICRP) provide dose coefficients, retention and excretion functions. Unknown date or dates of intake is the major source of uncertainty in dose assessment during routine monitoring of nuclear workers. The two assumptions commonly made in dose assessment from an unknown time pattern of intake have been tested experimentally with a model of repeated inhalation by rats. The hypothetical intake derived from lung measurement was relatively reliable under the two hypotheses. The hypothetical intake derived from excreta measurement depended on the choice of hypothesis and on the real time pattern of intake.


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