Table 2.
Radioactivity of the plankton. Values expressed as d/m/g
of gross beta activity and c/m/cc of total gamma activity
at time of collection,
R.a dioactivity
Sample
no.
Collected
Date
Hour
Gross beta activity
10° d/m/g of
dry plankton*
P-1
P-2
P-3
Pp-4
P-6
P-7
P-8
P-9
P-10
P-11
P-12
5/4/58
"
5/5
"
5/6
"
5/7
"
5/8
5/9
5/10
1540
1945
1423
1950
1615
1953
1427
1637
1845
1225
1300
0.000374
0.000854
0.000346
0.000434
292.0
53.2
11.3
4.06
8.58
0,424
0.00244
Pp-14
P-15
P-16
P-17
P-18
P-19
P-20
P-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
"
5/17
"
"
"
5/18
"
"
5/19
"
"
"
"
"
"
"
5/20
"
"
"
"
"
1907
1015
1405
1705
2140
1040
1830
2304 —
0858
1000
1100
1230
1352
1814
1935
2004
0101
0145
0400
0617
0855
1510
257
4.76
10,3
96.2
17.4
25.2
15,5
33.7
18.6
46.6
3.60
P-13
P-36
5/16
5/26
1609
0945
Gamma activity
106 c/m/cc of
wet plankton
32.2
7.66
12.1
27.4
7.52
6.93
3.18
2.30
*Correction factor for self-absorption based on K49_
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
wis
acs
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oor |