absorption.
The results, given in Table 15, are tabulated as
percent of total recovered activity in the sample, although
actual chemical yield was approximately 75 percent of the total
radioactivity in the samples.
If the percentages of the radio-
isotopes in plant and soil samples are approximately the same,
then it may be assumed that the radtfoactive material is adsorbed
onto
the surfaces of the plants.
The radiochemical analyses
and the analytical procedures are described on page 81 of this
report.
Table 15 - RADIOCHEMICAL ANALYSES OF SOILS AND PLANTS,
POST SHOT
Percentage of Total Recovered Activity
Fission
Soil
Plants
Product
Rigili Rojoa Runit Engebti
Cerium
32.2
fTrivalent
25.0
24.5
vO
31.2
Engebdi
Triumfetta Sedge
2h .6
25.7
Zireonium
20.8
24.5
25.5
19.8
13.7
24.6
24.2
Ruthenium
20.8
19.3
19.3
31.5
16.6
22.0
k.O
6.5
3.6
45
4.0
3.2
3.6
11.1
16.8
11.3
0
0
rare earths
Barium
Caletum-
Strontium
CesiumRubidium
18.5
21.2
16.0
13.5
0
7
3.0
--
6)
12.9
0
s
The radiochemical content of the soils from the four island
is fairly uniform with some exceptions noted in the Engebi
soil.
As in the soil samples, 80 to 85 percent of the radio-
activity in the land plants from Engebi was found in the highly
,- 60 -