RFVECTS OCF IONTEIWE RABATION Tahte 1.4—Geum Som Acsivisy in Urine of People Prom Adinginns and the Acmricans \wenr, se Dev 66 Pras Neves stew gegen at Des @ Pass Neveesnere ee — ea —_—_—_——__.." Torus Oe - _— tip [eV Cama No wee ee m™ Age 3 vee 4 8 “4 Mesa ' Age G15 vre 48 33 $1 Mean .._s-.sw—sié#ié#wyd««y = 13@ 7 3 3 4 188 217 6 180 | 370 | Wa | | 5 164 6 —_ 1 Age > 16 vr i 16 900 nao 7H5 87; 28 , AaD 1303 3l 4! 43 45 | : : eo OD 610 850 a wu * 7 790 | 0 846 62 754 6a0 Sl 410 +m) 70 440 a Mean 7 553 1. 978 ane 1. 7 He 7% 968 e e <7 78 o 248 7 1, #40 0 1, 418 ' 1, 0 8 a 10 Tl. . Lee 1 1, 580 385 12 1, 408 0 13 1, 810 965 14 12 438 13% | Teeraree Sereseme 15 1, 330 sO iff w 18 19 wD 21 22 a2 24 25 af Zz 1, 930 we, 1, $30 1, 300 1, 070 550 0 Leelee 0 6 0 453 1, 180 1. 14) 1, 380 410 SAS 0 750 ifs 323 1. 220 0 1, 158 ay 2a Mean Values corrected for decay beta activity at 44 days post detonation { Table “9. The predominant radionuclide is Se, which contributes 42 percent of the total beta acuvity at this time, Assays of fissile matertel made on pooled suinples of urine were all negutive within experimentel limits. The early urine samples analyzed bv the LASD. (cotlected 15 divs post detonation) con: tained fair amounts of radioiodine ii addition to the alkaline and rare earths, On the basis of the radiochenucal analysis of the urine. the body burden (the radioisotope deposition in the tissues) was estimated. The ratio hetween the activity of the urine and the wmneunt of isetope tised in the body is required for this calculation. Towever, few mtios are avilable for the deposition of the various radioelements in humans, so thatait was necessary tocurtlize ratios obtained from aniniad studies, Of che animads collected on Kongelap, the pig wis selected as the closest to the human in size awn) metibsolisan. A detadled study was there- fore made on the excretion of these animals and

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