Uptake of radioactive lead following inhalation and injection

Kinetics of lead in blood after the end of occupational exposure.

“…In addition, a worker may have a pool of lead in the lungs and the gastrointestinal tract and thus continue to absorb lead for some time after lead inhalation and ingestion have ceased. The limited data on hand -frequent measurements of two subjects -may indicate such an absorption, but mainly up to one week after the end of exposure, which is in accordance with earlier observations (9,12,13,31,32). This delayed absorption is probably the reason of the present weak positive correlation between TV2(1) and Y(I).…”

“…[3][4][5][6][7][8][9][10][11][12][13][14][15][16] years, that of Y (3) was 0.3 (range 0.0-2.6) p.mol/I, and that of T V2 (3) was > 100 (range 4.9-00) years.…”

Inhalation dose assessment of indoor radon progeny using biokinetic and dosimetric modeling and its application to Jordanian population

“…transfer rate of those radon progeny between organs or tissues in the human respiratory tract model, human alimentary tract model, and systemic models were taken from ICRP Publications (ICRP, 1979;1989;1993b;1994;1995). The mechanism of the transferring of radon progeny into blood from respiratory tract was substituted by a simplified compartmental model proposed by Marsh and Birchall (2000) based on the earlier published data sets by Booker et al (1969), Hursh et al (1969), and Hursh and Mercer (1970). It is assumed that Pb is transferred into blood with a half-life of 10 h and Bi with a half-life of 13 h, no matter what kind of attachment forms they hold.…”

Les incertitudes sur la dose délivrée aux voies respiratoires après exposition au radon

“…Toutefois, dans les conditions de la mine, la << fraction libre >> n'est que de 1 à 5 % et cette absorption rapide n'affecte pas trop la dose. Récemment, les données publiées à la fin des années 60 à partir d'expérimentations sur des volontaires humains (Booker et al, 1969 ;Hursh and Mercer, 1970 ;Hursh et al, 1969) ont été réévaluées en utilisant le modèle pulmonaire de la CIPR 66 (ICRP, 1994a) afin d'estimer les périodes d'absorption du plomb et du bismuth applicables au 2'4Pb et 214Bi des descendants du radon (Marsh and Birchall, 1998a).…”