title: Gastrointestinal absorption of plutonium by the Marshall Islanders.
abstract: The gastrointestinal absorption constant (f1) is a critical parameter in assessing systemic uptake following the ingestion of a radioactive material and in monitoring such intakes. This study addresses the latter, particularly for plutonium, and from environmental measurements derives an f1 value of 4 x 10(-4) for the Marshallese population. The uncertainty associated with the methodology and measurements used in this f1 value assessment is evaluated. This evaluation takes into account the results from 24-h urine samples and the particular lifestyle of the Marshallese. Plutonium intake resulting from soil consumption is a primary parameter in this evaluation; for this study, it was assumed to be 500 mg d(-1). The f1 value determined here is consistent with the values in ICRP Publication 67 of 5x10(-4) for ages 1 to adult, and is the same as that suggested by the NRPB.
authors.affiliation: Department of Advanced Technology, Brookhaven National Laboratory, Upton, NY 11973, USA.
authors.forename: L C
authors.initials: LC
authors.lastname: Sun
authors.forename: C B
authors.initials: CB
authors.lastname: Meinhold
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D007408:Intestinal Absorption; D008297:Male; D008849:Micronesia; D009689:Nuclear Warfare; D011005:Plutonium / Q000493:pharmacokinetics*; D012990:Soil Pollutants, Radioactive / Q000493:pharmacokinetics
chemical_list: D012990:Soil Pollutants, Radioactive; D011005:Plutonium