262
RADIOACTIVITY IN MAN
“|
ESTIMATED BODY BURDEN ISOTOPES -RONGELAP PEOPLE
|
(16)
1954 §
(1.2)
§f cs-137 (oes)
LB sr-90 02)
-
i Ce-127 007 (Of!)
MB z- 65 028 1.044)
1957 <
J
s*-s0 ooo!
POST
REDWING
Doce -144 (7)
-
1958 |
a
—e
RETURN TO RONGELAP
lo ce)
028 ( 36)
7 Sr-90 002
(an
oso) =
L Sr-90 0036
t
’
0.5
I
T
LO
—-
1.5
2.0
fic
Figure 10. Fstimated body burdens of Rongelap people since exposure to fallout, based on radiochemical urine analyses and gamma spectrographic analyses.
would he about .0036 pce). Analyses for Sr™
Oe
rats (Sr
at
Cai for the
1959 urine samples are not complete.
The changes in isotope levels of inarine, plant and animat life
as related to the body burdens of the Marshallese is being invesugated. Coconut crabs. considered a great delicacy by the people.
have been foundto selectively concentrate Sr”? upto levels of about
five thousand units and consumption has therefore had to be prohibited. Coconut and pandanus showslight Cs and Sr activity but
had
ao
pain
f=
a
ia
sateen
Cad$
are considered safe to eat. No untoward effects have been observed