aFirst entry is value from Table 4a of Egbert et al. (1985) based on ORNL reports (Killough et al., 1978a; Dunning et al., 1979) and often used in dose reconstructions for atomic veterans; values are based on dosimetric and biokinetic models in ICRP Publication 30 (ICRP, 1979a). Second entry, in parentheses, is value currently recommended for adult workers by ICRP (1994a; 2002). All values assume GI-tract absorption fraction that applies to radionuclides in oxide form (Eckerman et al., 1988).
bEntry in parentheses is radionuclide half-life.
cWall of lower large intestine.
dDose coefficients apply to any mixtures of 239Pu and 240Pu, which have half-lives of 24,100 and 6,560 y, respectively.