Radiation Protection Dosimetry Advance Access originally published online on November 1, 2007
Radiation Protection Dosimetry 2008 129(4):386-390; doi:10.1093/rpd/ncm452
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Derivation and validation of a urinary excretion function for plutonium based on occupational exposure
1 Health Physics Laboratory, Bhabha Atomic Research Centre, GSO Complex, Tarapur-401 504, Thane (Dist), Maharashtra state, India
2 Health Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400 085, India
3 Fuel Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400 085, India
* Corresponding author: yadav_jogendra{at}rediffmail.com
Received January 24, 2007, amended September 10, 2007, accepted September 29, 2007
Formation of a three-component urinary excretion function using the data of occupational exposure cases is described. Measurement results of plutonium inhalation from two subjects over 6000 and 2500 d are used in the derivation of this function. The three-component excretion function obtained is U(t) = 0.0008e–0.0566(t) + 0.00009e–0.0042(t) + 0.00004e–0.00008(t). The function is therefore proposed as a reliable basis to make an uptake assessment for operational control for mixed class of plutonium dominated by M-class chronic exposure.