Table 3.
Distribution of plutonium in size fractions and contribution of sizes to total soil plutonium in
desert pavement
Sample
Depth
Size Range (ym)
(cm)
Activity*
2,000-840
840-250
250-125
125-53
53-20
20-5
5-2
<2
- 2.5
A
B
C
2,007
94
0.8
3,017
1,077
10.0
3,945
1,365
12.6
22,295
3,634
33.6
76,271
2,700
24,9
58,338
1,633
15.1
30,099
217
2.0
13,143
104
1.0
2.5- 5.0
A
B
C
16
0
0
23
7
3.8
291
82
44.3
73
10
5.4
638
25
13.5
369
41
22.2
266
12
6.5
196
8
4.3
5.0- 7.5
A
B
C
7
0
0
3
1
2.6
33
8
21.0
38
5
13.2
15
1
2.6
78
9
23.7
72
5
13.2
172
9
23.7
7.5-10.0
A
B
C
7
0
0
20
6
3.6
23
7
4.2
78
11
6.6
725
26
15.5
711
83
49.4
215
9
5.4
640
26
15.5
0
*A = dpm/g in size fraction; B = contribution in dpm/g of soil, activity rounded off to nearest whole number;
C = percentage contribution of activity in size fraction to soil.