9ST
Table 1— DISTRIBUTION OF MASS AND GROSS GAMMA ACTIVITY AMONG THE PARTICLE FRACTIONS
sample
1
2
3
4
3
Distance
Time
fallen, *
removed,f
Weight,
cm
min
mg
31.7
31.7
31.7
31.7
31.7
16.5
31.5
46.9
61.2
91.5
13.46
Cumulative
weight,
mg
13.46
weight
fraction,
mg
0.208
10.98
8.57
3.23
6.73
24.44
33.01
38.24
44,97
0.378
0.510
0.591
0.695
i
qT
Cumulative
Gamma
Cumulative
activity,
fraction,
counts/min
counts/min
counts/min
1736
0.196
activity,
1736
1386
1105
763
888
3122
4227
4990
3878
activity
0.353
0.478
0.565
0.665
6
31.7
125
3.23
50.20
0.776
804
6682
0.756
7
31.7
191
4,48
54.68
0.846
710
7392
0.837
9
10
31.7
31.7
310
436
0.81
1.51
07.40
08.91
0.888
0.911
174
2909
7890
8149
0.893
0.922
11
12
13
14
31.7
15.2
4.8
<4.8
1339
1339
1344
1349
2,21
1.50
1.08
0.97
0.945
0.968
0.985
1.000
367
149
95
75
8516
8665
8760
8835
8
31.7
252
1.91
56.59
61.12
62.62
63.70
64.67
0.875
324
7716
0.873
0.964
0.981
0.992
1.000
*Particles introduced onto 30.7-cm column of x-butyl alcohol in a 2-cm layer of isobutyl alcohol. Range for distance
traveled is 30.7 to 32.7 cm. The values in this column correspond to the midpoint of the range.
TtSedimentation-rate calculations should include the column-temperature gradient: base, 4.5°C; 8 cm, 5.6°C; 16 cm,
11°C; and 32 cm, 20°C.
NHV™X GNV LAdH
Particle
Cumulative