taBLe 5.5
BIKINI LAGOON BOTTOM WATER 29 MAY 1956, 11° 30' 02" N 165° 21' 25" £&
lyzed 1 June 19 57
Analy’
{s
otope
Toa
Activity
Soluble Fraction
0.5 to 10
Suspended Matter
———~"(dis/min)/mi (dis/min)/ml
pet*
(dis/min)/ml
pet*
cel
sb!
au
618
113
11
306
108
f
49.5
95.6
9
312
5
li
50.5
4.4
100
au!
cst
74
218
t
218
ar
sae
an®
65
41
39
t
t
<3
of water
0
100
74
t
0
0
7.8
5.6
0.7
73.6
100
= 100
=Q
Micron
Sediment
10 to 1,000
Micron
Sediment
(dis/min)/gm (dis/min)/gm
34,500
555
7.3
90,000
5,600
322
1.2
100
100
92.2
79,000
50,000
44,000
< 3,740
3,350
2,350
2
26.4
a0
2,440
323
t
cot
Ke
7.6
0.7
9.57 Mev
67 y/min
67 y/min 100
t
0
t
1.69 Mev
28 y/min
28 y¥/min
t
0
t
1.15 Mev
32 y/min
we as 60 days)
(tl = 50 days)
100
t
0
32
100
39,000 (y/min)/gm ~700 y/min
* Percentage of total activity of the indicated isotope found in this fraction of the sample.
+ No detectable activity.
TABLE 5.6
ACTIVITY DISTRIBUTION WITH PARTICLE SIZE, NAVAJO
STATION N~-12, 11° 34’ N 165° 11’ E, 13 JULY 1956
Counted 14 July 1956
Percent of Activity Retained on Filter
Surface Water
50-Meter Water
Pore Size Range
\
|
micron
pet
3 to 0.75
0.75 to 0.5
0.5 to 0.2
0.2 to 0.08
0.08 to 0.05
0.05 to 0.01
26
18
3
4
2
6
Total counts/min retained on
filters from 50 ml sample
18.2 104 counts/min
Total counts/min in unfiltered
duplicate
16.6 x 104 counts/min
pet
8
8
6
2
4
0.3
7.6 x 10 counts/min
7.9 x 104 counts/min
Results of three successive filtrations of a single sample through
0.5p filters:
Retained on Filter
First filter
Second filter
Third filter
Apparent half life
of Activity
pet
day
33.0
0.026
0.024
4
95
95
121
ater
(dis/min)/ml
385,000
6,150
13,200
65
41
36
‘
ace
0.12
<2.7