-19~
Table 2.
Radioactivity of the plankton.
Values expressed as d/m/g
of gross beta activity and c/m/cc of total gammaactivity
at time of collection.
Sample
no.
Collected
Date
Hour
P-1
P-2
P-3
P-4
P-6
P-7
P-8
P-9
P-10
P-11
P-12
P-13
P-14
P-15
P-16
P-17
P-18
P-19
P-20
Pp-21
P-22
P-23
P-24
P-25
P-26
P-27
P-28
P-29
P-30
P-31
P-32
P-33
P-34
P-35
P-36
5/4/58
"
5/5
"
5/6
"
5/7
"
5/8
5/9
5/10
5/16
"
5/17
"
"
"
5/18
"
"
5/19
"
"
"
"
"
"
"
5/20
"
"
"
"
"
5/26
—
1540
1945
1423
1950
1615
1953
1427
1637
1845
1225
1300
1609
1907
1015
1405
1705
2140
1040
1830
2304
0858
1000
1100
1230
1352
1814
1935
2004
0101
0145
0400
0617
0855
1510
0945
Radioactivity
Gross beta activity
Gamma activity
10° d/m/g of
108 c/m/cc of
dry plankton*
wet plankton
0.000374
0.000854
0.000346
0.000434
292.0
53.2
11.3
4,06
8.58
0.424
0.00244
32.2
257
4,76
10.3
96.2
17.4
25.2
15,5
33.7
18.6
46.6
3.60
7,66
12.1
27.4
7.52
6.93
3.18
2.30
*Correction factor for self-absorption based on K40,
0,200
0, 166
0.182
0. 286
0.220
0.100
0,125
0.080
0.0182
0.0129
0.0222
0.0432
0.0344
0.0480