Appendix Table D. Radioactivity of the plankton.
Correction factors used to convert counts per
minute at time of initial count to d/m/g dry weight at time of collection.
Sample
no.
Date
P-1
5/4
P-3
5/5
P-6
P-7
P-8
P-9
5/11
5/9
5/7
no
P-11
P-12
P-16
P-2
P-4
P-10
P-13
P-14
P-15
P-17
P-18
P-19
P-20
Initial count
Hour
c/m
Decay
factor
2
*
14
"
"
10
"
16
At
.
e/m
time
Dry
weight
3
. 205
14
141
"
10
"
16
.018
.023
.029
.029
5/9
5/10
1720
2155
4,799
26
"
"
9, 200
37
. 043
. 053
5/17
620
14,508
"
14,700
.005
"
320
23,324
"
24,900
.005
"
047
5/16
"
5/17
"
"
1715
012
tis
52, 526
84,602
18,749
6, 692
845
101,598
940
99, 054
57,980
"
"
"
"
71, 000
92,000
22,000
6,800
"
110,000
"
115, 000
"
62,000
. 029
.010
.0003
.005
99
346
854
434
83,300,000
292,000, 000
15,000,000 —_53, 200, 000
3, 240, 000
11, 300, 000
1, 160, 000
4, 060, 000
2, 450, 000
8, 580, 000
121, 000
698
424, 000
2, 440
9, 200, 000
73,300,000
1, 360, 000
2, 940, 000
32, 200, 000
257, 000, 000
4,760, 000
10, 300, 000
.004
27, 500, 000
96, 200, 000
.016
7, 190, 000
25, 200, 000
.014
4, 980, 000
4, 430, 000
*No decay factor jused because of low counts and long half lives.
**Decay extrapolated from decay curves.
dry weight
374
124
1,500,000
350,000
94,000
33,500
d/m/g***
107
. 129
**
"
"
"
1350
c/m/g
244
111,416
56,681
89,398
29,922
_
collection
. 123
0845
1355
i605
1950
5/9
of
***Inoludes correction factor for self-absorption, geometry, and back scatter (3. 5).
17, 400, 000
15, 500, 000