20
tht! limits
distant
of dckection,
from
separation
possible
water
the
and more
sensitive
indicate
in solution
constant,
that
Bi by gamma–ray
to
5.2 years
for
60C0
P1’utonium-239,
sistent
ad
If the ratios
cell.ected at
trations
of 13 pCi/g
in goatfis’n viscera
a
low
concentration
detection.
were
remained
samples
and by chemical
wiil
on
for
separation
be a useful
are
tracer
30 years
in excess
in
compared
tracer
(Table
12) in goatfish
results
from
The presence
at Bikini.”
direct
feeding.
of 24.,000 years,
viscera
ingestion
~o
in 1969
contained
Nam
1.
dry
and 29 pCi.~’gdry.
as compared
of this
with
the
radionuclide,
The
is con–
of fine
samples
239
viscera
The se
radionuclides
a. long half-–life,
of setiiment during
particles
it
lagoon
of t’ne lagoon.
useful
_nd 207
Bi
a
probably
make
in sediments,
of selected
w-ith.a half-life
.
239,24(3PU
would
.
2s anot”ner potentiallyof
of analyses
it has
chemical
i:-.dication of transport
Bismuth–207
19.
f’ut-irebecause
parts
a strong
spectrometry
coi~pared in Table
the
207
Bi ratios
:
or on particles.
‘would he
samples,
methods
whiether transported
The results
particles.
USe Cl, for samples
of larger
counting
in different
primarily
207
60C0
to determine
would
the method
The use
crater.
and organisms
ratios
with
of goatfish
Pu in concen–
absence
of
sediment
merely
below
the limits
238
Pu
reflects
of