title: Measurements of actinide gut-transfer factors in humans.
abstract: Measurements have been made of the gastrointestinal absorption in humans of 239Np and 242Cm administered together in citrate media. Using five volunteers, consistent results of (2.0 +/- 0.2) x 10(-4) and (1.7 +/- 0.3) x 10(-4) were obtained for Np and Cm respectively; the quoted uncertainties are the standard errors of the means. A progress report is given of work to measure the f1 value for Pu in humans. Early work suggests an f1 value of 2 x 10(-4).
authors.affiliation: National Radiological Protection Board, Chilton, Didcot, U.K.
authors.forename: D S
authors.initials: DS
authors.lastname: Popplewell
authors.forename: G J
authors.initials: GJ
authors.lastname: Ham
authors.forename: J D
authors.initials: JD
authors.lastname: Harrison
mesh_terms: D000284:Administration, Oral; D003476:Curium / Q000008:administration & dosage / Q000493:pharmacokinetics* / Q000652:urine; D006801:Humans; D007275:Injections, Intravenous; D007408:Intestinal Absorption; D009405:Neptunium / Q000008:administration & dosage / Q000493:pharmacokinetics* / Q000652:urine; D011005:Plutonium / Q000008:administration & dosage / Q000493:pharmacokinetics* / Q000652:urine
chemical_list: D011005:Plutonium; D009405:Neptunium; D003476:Curium