urine astivit . integrating: Eq. (2). Equations (1) and (2):were used todetermine the instantaneous: fraction of atoms removed or added to the atom uptake per unittime, ‘Ke, andithen: the initial daily activity ingestign rate required:toiproduce themeasured‘oriderived body burden. Equation (3) .wae used to:deteruine. the:‘number: ofdisintegrations on Rongelap or Uririk Atolls. Rynrana ree that occurred in| the!body©being the Hasidende™dicervallot:‘ia?‘individual living © aee ofh ese (2) can be convertedSethesonseanecpontiowcs guests by.® ~\, Single uptake-expressiqns ave obtained by. setting the maturing of coconut trees during residence on Bikini},peditanunee a continuously increasing dietary uptake o f Mee, Thus, myvas. toyndl-to have a nege=28 tive value. aay yey AS PAB In the case of Rongelap atid Utirik, ke was ‘found to‘have a positive value for \37o8, 6575, 6064, and 9065, a ' This indicated that in addition to radioactive decay, some other removal mechanism decreased.the. radioactivity in dietary items during the residence interval. For the nuclide Re, only one mea~ vil was not possible. Kp was determined by using Eq. (1) or (2) and the population subgroup mean body burden or urine activity concentration. Portions of these bioassay data are illustrated for adult males and females in Figures 2 to 6. y Two consecutive urine or body burden data points were used to eliminate the unknown ingestion we . PAPUA os ete Pols: . ae . . sa : ee ar «abr 7 . 74 ae 2 SEEiatend SEI FPO