ee
the greatest likelihood of the presence of plutonium.
The
values given in Table 14, therefore, probably are maximum values
for each type of sample.
239,240
The ratios of
Pu
to
238
Pu
approach 2:1 at Eniman I. and are about 15:1 in Bravo Crater.
Bikini I.
soils contained no detectable 23854,
239,240
contained the highest concentration of
.
analyzed.
The presence of
239,240),
and
although they
P u of the samples
207.
.
.
:
Bi in goatfish viscera
is consistent and probably results from direct ingestion of fine
.
‘
.
.
particles of sediment during feeding.
The absence of
238
—
‘
Pu in
goatfish viscera as compared with the sediment merely reflects
a low concentration of this radionuclide,
below the limits of
detection.
Although none of the 1969 samples were analyzed for the
X-ray emitter O3n4,
this radionuclide was found in concentrations
of 80 d/m/g dry weight in Bravo Crater sediment collected in
1967
(Beasley and Held, 1969).
Nickel-63 is of particular interest
aS a tracer since it has a half-life of 92 years.
‘
the clam kidney accumulates
63__,
Ni,
.
as it does
60
Co,
In addition,
--
.
and is there-
ergy
of En
meiant
rtor
past
n’s Office
ce of 63 Ni. Deui
fore an indicator organism for the presen
Another long-lived radionuclide,
108m
ARCHIVES
Ag, with a half-life
of approximately 100 years, has been identified for the first
time among the radionuclides at Bikini.
This radionuclide was
detected from the gamma-ray spectrum of the hepatopancreas of -
50024b0