Table 5.1
7
wee
.
8
oe
*
an
+
«
2 oe
en
oe
.
s
.
.
«
GROSS BETA ACTIVITY IN URINE OF RONGELAP GHOUD
t
(rine Collected on 46th Post-exposure Day and Valucs Correctad far Derny
Back to Cotleetion Drv)
Total
f
AsUy hh Saipans
oo
Volume
44 hr
’
Case No,
Age
3 vears
2
ye
a
5
23
3a
o4
69
Mean
Total
Beta Activity
d/m/24 hr
Case No,
Age
-
120
Tle
150
155
40
260
80
459
894
31s
223
0
285
301
165
404
«16 vears
4
455
ti34
810
355
930
450
340
780
455
47
1700
201
549
t583
1677
2460
1670
77
320
960
408
34
TH
370
ST
480
TM2
40
46
49
550
330
425
1450
495
v
55
"56
320
700
1080
$220
58
750
2170
57
years
20
265
1900
60
0
1032
0
236
1100
1705
674
507
0
$50
1095
810
75
440
980
1180
82
670
2140
Meun
439
758
Mean
581
1208
0
80
980
635
-855
300
290
230
965
465
580
550
650
255
190
280
650
450
110
‘
62
63
66
-68
71
73
78
79
780
24
26
35
36
39
47
67
72
76
;
Hota Activity
demo ud hr
7
9
10
1D
13
14
18
22
52
Age 6 to 15
Volume
24ohe
540
=
1985
2260
1715
2010
1450
0
52
2038
1353
group — 25 per cent (of which 11 per cent is La‘, in equilibrium with Ba!*® at this time), Fis-
sionable material was not found in significant amounts in any of the urine samples analyzed.
lodine~131 wag found only in samples analyzed at early time intervals, due to its relatively
short physical half life.
5.4.2
Estimate of BodyBurden
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 pc, for post-exposure day 82 was obtained. If this total human body burden
93