to the aboveground plant organs.
Bikini,
At
leaves);
the concentrations of 906, in
the opposite is true for
157 06 (Table 12).
the aboveground plant organs of a
Because leaves are more often
species are comparable to the concen-
available
trations retained in the roots of that
we developed fruit-leaf concentration
species.
ratios to allow prediction of
However,
concentrations of
for sampling than are fruit,
radio-
13%o5 and 239, 2405, | are lower in the
nuclide concentrations in fruit from
aboveground plant organs than in roots
those measured in leaves of
(Table 11).
species (Table 13).
In addition,
there are
the same
The small number
differences in uptake among the vari-
of samples makes it impossible to
ous aboveground plant organs.
statistically evaluate these ratios;
any one species,
706.
Within
concentrations of
we will do
nd 239, 2404, are generally
available.
this as more data become
We also calculated leaf-
smaller in edible plant parts (e.g.,
leaf and fruit-fruit concentration
fruit)
ratios between different species for
than in nonedible organs (e.g.,
Table 12.
Summary of median soil-plant concentration factors.
Concentration Factor,
sr
(pCi/g dry plant)/(pCi/g dry soil)
.
.
5
lesFy
Mature
Leaves
Fruit
Messerschmidta
0.48
a="
3.7
Cocoanut
O.16
0.024
Panadanus
0.91
Papaya
Species
Mature
Leaves
Mature
Fruit
Leaves
Pruie
-—--
0.035
--7
3.0
2.5
O.015
---
0.50
15.0
5.4
—s
-a-
L.00
0.43
3.)
8.2?
0.016
0.002
Breadfruit
1.80
0.76
1.6
7.9
0.027
aa
Banana
0.73
0.05e°
0.42
a=
0.004
0.0003”
Squagh
3.40"
0.15%
26.0"
56.04
a
---
Pooled Scaevola &
Not
detected.
1974 unpublished
plane and soil data from the same vicinicy.
Whole plant.
Seeds.
-—279-
1?