wet
eye ene et,
- 20 -
an understanding of the methods
of distribution of radioactivity in the
lagoon.
Table 6.
Gross beta activity of the algae collected from the deep
and shallow waters of Eniwetok Atoll, expressed in
uc/kg of wet tissue.
Island
Date of
coll ection
Species
Deep water
Rex
6-6-54
6-16-54
Bruce
6-3-54
6-21-54
Elmer
9-4-54
9-9-54
Halimeda spp.
"
"
Vera
2-11-55
3-9-55
3-11-55
Halimeda sp.
n
"
Halimeda spp.
Edna
3-8-55
9-15-54
Lyngbya majuscula
"
"
"
"
"
"
Shallow wate
50
130
"
"
"
"
28
50
2.6
2.7
0.24
0.21
0.24
0.20
35
1.2
The radioactive materials adhering to the bottom sand of the lagoon
are constantly undergoing mixing and diffusion into
the
adjacent water.
Therefore, the amount of radioactivity in the sand may be directly related
to that in the water and indirectly to that in the algae.
The ratio
relationship of the radioactivity in the algae to that in the sand,
for t
amount
giount
of radioactivity in the algae,
of radioactivity in the sand
was used to determine whether the algae
had concentrated radioactive materials from the water.
i
The results, giv
at
Vo