title: Dietary intake evaluation and dosimetric modelling for the Techa River residents based on in vivo measurements of strontium-90 in teeth and skeleton.
abstract: Explanations are given for the models and algorithms that are utilised to reconstruct the doses due to the incorporation of 90Sr in the inhabitants of the Techa riverside villages. A model for the 90Sr accumulation and excretion in the tooth enamel is employed to derive the relative intakes of 90Sr in the years 1950-1959. The measurements of beta-ray activity on the surface of the front teeth of persons born between 1940-1959 are used to derive the relative intakes in different calendar years and the transfer functions to the tooth enamel as a function of age. This derivation is based on a non-linear optimisation algorithm, to fit the observed average count rates for different birth cohorts in a village. The data for the village of Muslyumovo are used as the reference data set. Absolute values of the strontium intake are derived from the relative values by a fit to the measurements of the 90Sr body burdens that were performed after 1974. A model has been developed for the age-dependent metabolism of strontium in the skeleton. The computations in terms of this model are in reliable agreement with experimental data on strontium in man.
authors.affiliation: Urals Research Center for Radiation Medicine, Medgorodok, Chelyabinsk, Russian Federation.
authors.forename: V P
authors.initials: VP
authors.lastname: Kozheurov
authors.forename: M
authors.initials: M
authors.lastname: Degteva
mesh_terms: D000328:Adult; D001822:Body Burden; D002648:Child; D002675:Child, Preschool; D003743:Dental Enamel / Q000378:metabolism; D005507:Food Contamination, Radioactive / Q000032:analysis*; D005618:Fresh Water; D006801:Humans; D007223:Infant; D008954:Models, Biological; D012426:Russia; D013326:Strontium Radioisotopes / Q000008:administration & dosage / Q000032:analysis* / Q000493:pharmacokinetics; D013997:Time Factors
chemical_list: D013326:Strontium Radioisotopes