-16-
is not apparent,
The amount of iodine secreted by the thyroid was calculated
to be 76 ugm/day, 61)
‘UrinaryIodine Excretion Determinations
Urinary iodine excretion determinations were carried out on 28 samples,
The average value of 105 ug/day (range 19,5-279 ug/day) is similar to values
found in the Eastern United States,
It was expected that the Marshallese
values would have been somewhat higher in view of their mainly oceanic environment and available sea food,
Determinations of Body Burdens of Radionuclides
Gamma spectrographic analyses were carried out on 158 Rongelap people
using the Hanford shadow shield type whole body counter for the first time in
these surveys,
This counter, along with the electronic equipment, was set up
in a newly-acquired air-conditioned trailer brought to Rongelap village.
The
background count with this eounter was somewhat higher than that recorded from
the 21 ton steel room previously used, but the
40
K and the
137
Cs peaks were
easily recognized,
The results of these analyses are still being processed,
Preliminary
results indicate that though there are a few individuals with relatively high
values for 13765 (nearly twice average), in general both exposed and control
groups had body burdens for this isotope about the same as was determined four
years previously,
In muc per kg body weight the levels were about 11.5 for
females greater than 15 years of age and about 15,6 for males greater than 15
years of age,
(These values are slightly greater than those obtained four
years ago, but since different techniques were used, this difference would not
Csi
appear to be significant.)
007839
These results indicate that, as noted four years