title: Studies on the biological half-lives of three important radionuclides released in nuclear power reactor operations.
abstract: The four important parameters involved in the calculation of internal radiation dose to the human body, per unit intake of a radionuclide are 1) weight and size of the body organs; 2) the biological (retention) half-life of the radionuclide; 3) radiation weighting factors for the type of radiations emanating from the radionuclide; and 4) the organ weighting factors for the organs being irradiated (target organs). Whereas, for a particular radionuclide, the radiation weighting factor and the organ weighting factors may remain constant for all humans, the other two parameters, namely, the organ weights and biological half-life, are population specific and may differ from one population group to another. For a realistic dose estimation, the population specific data on organ weights and biological half-lives for various radionuclides therefore, are needed.
authors.affiliation: Health Physics Division, Bhabha Atomic Research Centre, Bombay, India.
authors.forename: H S
authors.initials: HS
authors.lastname: Dang
authors.forename: D D
authors.initials: DD
authors.lastname: Jaiswal
authors.forename: R C
authors.initials: RC
authors.lastname: Sharma
authors.forename: S
authors.initials: S
authors.lastname: Krishnamony
mesh_terms: D000328:Adult; D002588:Cesium Radioisotopes / Q000493:pharmacokinetics; D005260:Female; D006207:Half-Life; D006801:Humans; D007457:Iodine Radioisotopes / Q000493:pharmacokinetics; D008297:Male; D008875:Middle Aged; D009688:Nuclear Reactors; D009929:Organ Size; D011829:Radiation Dosage; D014316:Tritium / Q000493:pharmacokinetics
chemical_list: D002588:Cesium Radioisotopes; D007457:Iodine Radioisotopes; D014316:Tritium