Disintegration rates
(d/m/s) of the radioisotopes separated from five plankton
samples on te) date of analysis (July 1957) and (B) corrected to date of
collection (September 1256).
I
Isotope
II
Plankton
Plankton
_(7,8,9)
A
°
(13,14,15)
B
Rut%%_Rnl%G 3,100 1,930
Zr95-Nb?>
266 6,800
Celtteppl44
g07 «1,275
3789-90
0
¢3i37
Mn>4
O
0
B
3
3
522 13,490
*
*
0
0
20
0
trace
Fe>>
Feo?
Col
4,360 5,300
0
0
1,240 2,720
4,880
0
1,180
5,860
0
2,600
600°
2,182
203
231
zn©5
2,100 4,900 1,830
10
242 4,100
* Not determined
249
3!
0
re
~~
i
Q
Z/
A
9
trace
C038
0
III
a
Zz
Yn
249
4,200
4,200
IV
Plankton
(43, 44,45,46)
A
B
0
0
460 11,800
5,940 12,500
0
136
137
0
139
274
10,000 12,000
0
0
6,700 14,700
1,450 24,500
1,090
1,240
7,120 16,400
Vv
Plankton
(50,51,52,53)
A
B
0
0
350 8,960
2,500 5,250
oO
229
109
A
0
.
234
218
421 7,110
522
9,200 21,200
B
82
0
2,100
51
0.
102
O
15,100 18,100
0.
0
1,822 4,000
458
Plankton
(57, 58,59)
*
11,900
0
628
14,300
0
1,700
312
356
125
2,110
7,050 16,200
-cT-
Table 2.