Table 3.
Mean -*’Cs and “9Sr Concentration in Aerokoj Coconuts
(nCi/g wet weight)
Sample
13%es
Meat
2.6
Milk
3.0
29S
0.009
SUGAR (LELE) AND TARE (ENEMAN}
For all practical purposes these are one island, although marked
differences in background levels are seen between the east and west
ends (Figure 5).
Several nuclear detonations occurred on the west end of Eneman which
as a result is only about half its original size.
Soil samples were taken at four locations on Eneman where measured
backgrounds were 60,
100,
250, and 500 upR/hr respectively.
Each
sample represented approximately one square foot to a depth af one to
two inches.
Three main contributors to the gamma exposure rate were
identified:
©9Co, !37Cs, and ?92mRh.
Although the '°2"Rh component of
the gamma spectrum probably contained some !°®Ru-Rh, the concentrations
were calculated assuming only !°*™Rh to be present.
A wide variation
in the relative amount of '7’Cs was seen, but in general the amounts
varied inversely with the background exposure rates.
Figure € shows
the projected decay of the sample taken in the 500 uR/hr background area.
The relative amounts of each nuclide are indicated at VO (July 1969).
Figure 7 gives the projected exposure rate as a function of time.
Two
of the samples were also analyzed by radiochemical methods for alpha
emitting nuclides (Table 4).
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