Levels in the sea of naturally occurring nuclides of elements also present as
radioisotopes in fallout.
Also shown are the physical forms of the naturally
occurring elements in sea water, per cent solution of fallout radioisotopes in
sea water, and percentages of radioisotopes observed in plankton.
Gram/ton of
Form of
in sea water
element in
stable element
(ppm)
(8)
Fallout in sea water
stable
Per cent in solution
sea water
evidence
(8)
Indirect
Direct
evidence
(9)
Isotope
zn©5
O14
mostly
02
~~
Co27, 58,60
.0001
solution*#
0007
--
Feo?
Zr9o-Nb?>
02
?
Celth_pplth
0004
Mn54
solution***
particulate**
2
.00007
--
2
.001
01
mostly
.002
C337
002
mostly
--*
gr89.99
13
mostly
Rut06_R106
Stable calcium
" potassium
2
?
--
solution**
solution
solution
HOO.
solution
380.
solution
-1.0
7.2
* A value of .05 per cent is given for cesium.
percentage
fallout
elements in
element
in five
form of
sea water
particulate
"
of radio-
plankton
samples
25.1
24d
"
"
23.5
20.2
"
1.4
0
"
--
"
0
Average
Principal
70
solution
87
solution
8.6
0.2
0.2
The apparent insolubility is caused by
a strong adsorption of the cesium fon to colloidal particles of hydrolysate sediments
and not to its insolubility in sea water.
**# Goldberg 1954 (7).
*#* Kawabata, personal communication.
-9T-
Table 3.