Radioecological model for transport of radioiodine and radiocesium in food chains after radiological accidents and discharge of radioactive substances to atmosphere for study of mechanism of formation of internal radiation doses to population. Part 3. Description, formulation and properties model components for metabolism of I-131 and Cs-137 in human organs

«Radiation and Risk», 2014, vol. 23, No. 1, pp.32-50

Authors

Vlasov O.K. – Head of Laboratory, D.Sc., Tech., Medical Radiological Research Center of the Russian Ministry of Health, Obninsk. Contacts: 4 Korolyov str., Obninsk, Kaluga region, Russia, 249036. Tel.: (48439) 9-32-45; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

Description, formulation and properties of model components for metabolism of ¹³¹I и ¹³⁷Cs in human organs after radiological accident and atmospheric discharge of radioactive substances is described. The model allows to investigate effects of dynamics of fallout of radionuclides, weather conditions, individual characteristics of the residents, their diet, content of ¹³¹I and ¹³⁷Cs in a body, as well as formation of internal radiation doses. Mentioned conditions were shown to determine dynamics of content of ¹³¹I and ¹³⁷Cs in a human body. To reconstruct individual internal radiation doses by radiometry data qualitative diet characteristics should be known. Lack of the information increases uncertainty in individual dose estimating. In the affected territories of Russia the main contributor to the internal dose is ¹³¹I entered the thyroid by inhalation. Maximal radioactivity of ¹³¹I in the thyroid was twofold higher in residents of the Bryansk region than of Kaluga region.

Key words
Model of iodine and caesium radionuclides transport, food chains, radiation accident, internal doses.

References

1. Balonov M.I., Bruk G.Ia., Golikov V.Iu., Shutov V.N., Savkin M.N., Pitkevich V.A., Stepanenko V.F., Vakulovskii S.M. Otsenka doz oblucheniia naseleniia Rossiiskoi Federatsii vsledstvie avarii na Chernobyl'skoi AES: sbornik metodicheskikh dokumentov [ ] pod red. akademika RAMN G.G.Onishchenko. Sankt-Peterburg, 2006. pp. 8-55.

2. Vlasov O.K. Radioekologicheskaia model' transporta radionuklidov ioda i tseziia po pishchevym tsepochkam posle radiatsionnykh avarii s vybrosom v atmosferu dlia issledovanii zakonomernostei formirovaniia doz vnutrennego oblucheniia naseleniia. Chast' 1. Opisanie, postanovka i svoistva agroklimaticheskogo bloka modeli Radiatsiia i risk. 2013. Vol. 22, No. 2. pp. 16-34.

3. Vlasov O.K. Radioekologicheskaia model' transporta radionuklidov ioda i tseziia po pishchevym tsepochkam posle radiatsionnykh avarii s vybrosom v atmosferu dlia issledovanii zakonomernostei formirovaniia doz vnutrennego oblucheniia naseleniia. Chast' 2. Opisanie, postanovka i svoistva blokov metabolizma radionuklidov ¹³¹I i ¹³⁷Cs v organakh krupnogo rogatogo skota [ ] Radiatsiia i risk. 2013. Vol. 22, No. 3. pp. 21-39.

4. ICRP Publication 56. Age-dependent doses to members of the public from intake of radionuclides: Part 1 Ann. ICRP. 1990. Vol. 20, No. 2.

5. ICRP Publication 67. Age-Dependent Doses to Members of the Public from Intake of Radionuclides: Part 2. Ingestion dose coefficients. Oxford: Pergamon Press, 1993. 166 p.

6. ICRP Publication 71. Age-dependent doses to members of the public from intake of radionuclides: Part 4. Inhalation dose coefficients. Oxford: Pergamon Press, 1995. 405 p.

Full-text article (in Russian)