fruit,
roots,
litter,
and stems of
All samples were handled separately,
edible (Pandanus, breadfruit, coconut,
placed
papaya, banana, and squash) and non-
LLL for processing and analysis.
edible indicator (Seaevola and
soll and vegetation samples were
Messervsenmmidia) plants were collected
analyzed both by Ge(Li) gamma spec~
when available.
trosocopy and by wet chemistry for
We attempted to take
in plastic bags,
and sent to
at least one soil profile, and pre-
the following radionuclides
ferably as many as
1.2):
three,
through the
root zone of each sampled plant.
re
Pe,
02m A LOm,
In
addition to the soil profiles taken
area
through the root zone of sampled
28,
vegetation, other soil profiles were
00 ny |
Sen 155), .
(see Ref.
20 ee
Meo.
Ail
106
133e 4, Tog.
207s
228.
2385 239 ou 2400 24ly
and OO a,
collected on a random basis on both
Bikini and Eneu Islands.
The geoDATA ANALYSIS
graphical locations of these profiles
are also shown in Fig.
3.
The surface-soil
ALl profile samples were taken
from pits dug with a backhoe.
the pit was dug,
After
normal distributions and thus, we
calculated
geometric means of
t
90.
Sr,
carefully cut back a few centimeters
profile.
undisturbed
For each profile,
to 15 cm)
activities appear to approximate log-
the sidewalls were
to ensure a clean,
(0
L5?7
Cs,
239,240,
Pu,
concentrations
LOO-em*
Island
as
in
soil
a whole
and
and
for
for
6065,
d
sn
Eneu
the
four
samples were collected from the side~-
areas of
wall at increments of
For each profile collected, we plotted
5 em in the
interest on Bikini
Island.
upper part and of 10 to 20 em through -
(on semilog paper)
the lower part of the profile.
of the selected nuclides as a function
Total
the concentrations
depth for profile samples varied from
of depth.
25 to 105 cm.
pared in an attempt
(see Appendices A and B).
carefully selected and classified by
For example,
collected leaves
Because they are the major contri-
butors to the dose from ingestion of
were classified as young, mature,
and senescent.
Two ages of litter
terrestrial foods
90,
were readily identifiable and were
collected accordingly.
3
We
stages of growth were unavailable.
For
gree
“soeica
-5-
inad
137, s,
selected
However,
fruit samples representing different
sheets
eoemers
to characterize
the different areas of the islands
Vegetation and litter samples were
age.
The profile data were com-
and
(Refs.
1,
2 4G
é
239,
240
Pu
7, 8),
were
for more detailed analysis.
calculated
concentration factors
these nuclides from measured