->2?-
, pandanus , spinach, and Morinda.
The algae were collected
er water of
pth in the shallow water near shore and in the deep
lagoon, usually in the vicinity of the fish-collecting
tions.
Sample values are given in Appendix Tables IV, V, VI and VII.
rom these tables it can be seen that the activity varies widely
en within samples of the same kind.
In January, for example,
he pulp from one papaya had an activity of 8.6 x 107! uc/g (wet),
he highest level found in any edible plant portion on that date,
hile the pulp from a second papaya specimen had an activity
f1.3x 10! uc/g (wet).
In both edible and non-edible plants the specific activity
3
GBs higher in the leaves than in the fruit, the difference genPally being two to eightfold.
Much of the activity in the
brch 1954 plant samples was probably due to surface contaminaLon.
High counts in the internal portions of stems, however,
ndicated rapid uptake of fission products by absorption through
me root systems.
Later collections also indicate uptake of
Mission product material within the leaf tissue.
For example,
par buds formed after the initial fallout contain as much
tivity &8 do older leaves, and washing removes very little of
he activity,
)
In the earliest collections the bark of shrubs and trees
ad the epidermis of edible plant parts contained from 13 to 40
ae s more activity than the internal parts.
In the later col-
Jotions, however, this ratio wes S&lvays less than two,
It is
pt definitely know, however, whether differenti
al uptake or