-21-
Levels and Decline of Gross Beta Radioactivity at
Belle Island
Plants
The
amount of
Scaevola plant No.
given in Table 3.
radioactivity in
the
samples of
1319 collected during the
The amounts for the
study is
other species are
given in Table 4.
The highest amounts of radioactivity,
were found in the leaves
pre-Nectar,
(20 uc/kg) of a young coconut plant
collected in the western part of the island in Area C and
in the roots
(18 uc/kg) and tops
in the same area.
(13 yuc/kg) of a grass plant
The lowest amount was found in the
stem
(0.35 wc/kg) of a Messerschmidia plant at the eastern end of
the island.
In Scaevola,
post Nectar
the levels of radioactivity
were higher
factors of 500
than the pre-Nectar
(leaves) and 30 (stems)
level (29,000 uc/kg)
levels
(Table 3).
basal leaves of a Scaevola plant in area C
highest
three
by
The
contained
of all of the plant
days
the
samples
collected at Eniwetok Atoll during this study.
The amounts
Scaevola plant No.
some
of
radioactivity
1319 were
tissues contained more
compared
of
eight tissues of
to
determine whether
radioactivity than others.
In