Table 4.
Distribution of plutonium in size fractions and contribution of sizes to total soil plutonium in
desert mound
Sample
Depth
(cm)
0
Size Range (ym)
Activity*
2,000-840
840-250
250-125
125-53
53-20
20-5
5-2
< 2
- 2.5
A
B
C
10,523
169
1.7
4,003
1,320
13.3
1,221
522
5.2
21,653
3,622
36.4
74,058
1,977
19.9
229,401
1,972
19.8
56,653
232
2.
29,221
137
1.4
2.5- 5.0
A
B
Cc
6,597
127
1.6
1,553
419
5.2
5,354
2,21]
27.5
6,193
1,350
16.8
64,525
2,368
29.4
70,809
1,232
15.3
25,517
212
2.
11,098
126
1.6
5.0- 7.5
A
B
Cc
1,069
16
0.8
541
133
6.6
851
325
16.2
1,117
255
12.7
15,496
606
30.3
16,484
522
26.1
4,834
93
4,
2,547
51
2.6
7.5-10.0
A
B
Cc
11
0
0.1
24
6
3.4
51
17
9.7
74
12
6.9
1,042
43
24.6
898
57
32.6
699
35
20.
144
5
2.9
*A = dpm/g in size fraction; B = contribution in dpm/g of soil, activity rounded off to nearest whole
percentage contribution of activity in size fraction to soil.
number; C