ok
oe eeameTala
=33-
Table 9.
Comparison of the gross beta activity of the total plankton
and total water strained for three samples
after the Wahoo detonation.
Total volume
Sample
Date
Hour
P-14
5/16/58
1907
W-l1
5/16/58
1910
P-17
5/17/58
1705
W-2
5/17/58
1653
P-19
5/18/58
1040
W-3
5/18/58
1348
Water
M3
Plankton
ec
d/m/total
volume
Water
8
50
d/m/f/total
volume
water
Plankton
plankton
1.7x106
4, 400
5. 2x105
11, 000
1. 1x106
3, 000
7.5x109
14.
180
5.7x1010
10
180
collected
3,3x109
in other investigations of the levels of Sr99 in marine organisms in the
.
(3, 4, 7,
open sea
11)
The low levels of Sr?9 in the plankton may be due to the low amounts »
present at the time of collection and to the unavailability of gr90) which
may be explained on the basis of solubility, coprecipitation with calcium
carbonate, competition with calcium,
and isotopic dilution by stable
(7)
strontium .
The small fish collected after Wahoo had essentially the same radioisotopic composition as the plankton samples.
A sample of dolphin liver
.
rho
oc
yor
>
te