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.
isotopes
If the percentages of the radio-
in plant and soil samples are approximately the same,
then it may be assumed that the radioactive 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
Product
Rigili Rojoa Runit Engebt
Cerium
32.2
25.0
18.5
21.2
Zirconium
20.8
24.5
25.5
Ruthenium
20.8
Trivalent
“pare earths
Calcium-
Strontium
CesiunRubidium
24.5
31.2
ok 6
25.7
16.0
13.5
4.6
24.2
19.3
19.3
31.5
16.6
22.0
3.2
3.6
11.1
3.0
16.8
11.3
0
0
4.0
Barium
"
- Engebi
Triumfetta Sede
a
6.5
3.6
19.8
0
--
--
13.7
RAS
0
12.9
4.0
0
The radiochemical content of the soils from the four islands
is fairly uniform with some exceptions noted in the Engebi
soil.
As in the soil samples, 80 to 85 percent of the radto-
activity in the land plants from Engebli was found in the highly
- 60act