-~25-
Table 4.
Sr90 in samples collected aboard the USS Rchoboth May 6
to May 20, 1958. Analyses made January 21, 1959. Values
expressed as d/m/gof dry weight at time of collection.
Sample
Date of
collection
Gross beta
activity
108 d/m/g
gr90
d/m/g
gr90
per cent of gross
beta activity
290
55
11
2050
12
0
0.00070
0.00002
0
P-6
P-7
P-8
Large plankton
"
"
"
"
5-6-58
"
5-7
P-10
P-12
P-13
P- 13)
"
"
"
"
"
"
Small plankton
5-8
5-10
5-16
"
P-15
P-16
P-17
P-18
Large plankton
"
"
"
"
"
"
P-9
P-15)
-
ee
P-34)
P-35)
T-7
RI
tt
"
.
"
if
Shrimp
"tl
tt
tt
4. 0
8.6
0.0024
32
0
0
0
6.0
|
0
0
5-17
44.0
415
0. 00090
5-17
"
"
"
4.8
10
96
17
1710
441
226
3280
0.04000
0, 00400
0.00020
0.02000
705
0, 00010
0.01000
_
1
;
9-19
"
5-20
8.9
1030
5-18
3.2
0
Hi
0
54
0
i
cS
<S