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Table 5.10
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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
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ence
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22
30
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2
7
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