Ty Wy MUR> ae Table 5.10 » eet e * » tae + . 6 . £e ‘ oe * 8 ‘ -« a * GROSS RETA ACTIVITY IN URINE OF RONGELAP GROUT er oe (Urine Collected on 46th Post-exposure Day and Valucs Corrected far Devwy Bach to Collection Diy) x é Total ‘ Case No, ry Age 5 years ' 2 3 5 23 ‘| ot 32 Total Volume “24 hr 120 150 155 40 Beta Activity d/m /24 hr . - 260 0 80 455 285 301 Meun 165 404 Age 6 to 15 years 20 24 26 35 36 ay 265 - 550 650 255 - Beta Agtivity dam 24 her 4 7 9 10 455 SLO 355 980 634 1700 201 549 13 14 340 780 1677 2460 960 458 Case No. Age ~ 16 veara T12 BY4 313 223 54 69 Volume e4 hr 11 450 455 47 n4 47 40 46 49 62 55 56 750 480 550 330 425 780 320 700 570 7H 1450 495 0 0 1080 3220 57 58 550 750 1095 2170 1900 0 60 62 1032 0 1670 77 810 980 63 66 635 655 “> 230 2260 1715 236 1100 67 450 110 440 980 674 507 0 1180 79 B0 82 465 540 670 2038 1353 2140 Mein 439 758 Mean 581 1208 72 75 76 650 1705 300 290 -' 190 280 47 -68 71 580 1985 7 965 ‘ ee eo NS aca tiee 2010 1450 0 52 group —25 per cent (of which 11 per cent is La®, in equilibrium with Ba'*° at this time). Fissionable material was not found in significant amounts in any of the urine samples analyzed. lodine-131 was found only in samples analyzed at early time intervals, due to its relatively short physical half life. 5.4.2 Estimate of Body Burden For estimating the human body burden of the various fission products, a semi-empirical approach, involving extrapolation from animal data, was used. Two Rongelap pigs were killed after their average 24 hour urinary excretion of fission products was determined. All tissues were analyzed for total beta activity, as well as for Sr®*, Ba'**, and the rare earth content (Table 5.2). By applying the ratio of animal body burden/urine excretion activities to the Rongelap native urine samples analyzed at about the same post-detonation time, a total human body burden of 0.33 uc, for post-exposure day 82 was obtained. If this total human body burden te etee ence 93 t- 7 Ie Re 1583 18 22 30 . * 2 7 cee fam In ~ ob: or Looe pot