TABLE 1. Average activity (Bq) of the whole chains of natural radionuclides in the continental crust and soil, and total activity of wastes from nuclear power. After and .
K-40 |
Th-232 |
U-238 |
Total |
|
| Concentr. of parents in 1 g of soil Number of radionuclides in chain Content in crust (17.3 x 1024 g) |
0.420 1 7.3 x 1024 |
0.045 9 7.8 x 1023 |
0.033 14 5.7 x 1023 |
0.498 24 8.6 x 1024 |
| Soil (in 1 ton) | 4.2 x 105 |
4.1 x 105 |
4.6 x 105 |
1.3 x 106 |
| Soil (in 1 km3) | 8.4 x 1014 |
8.1 x 1014 |
9.2 x 1014 |
2.6 x 1015 |
| Wastes from nuclear power reactors in 1997 Wastes accumulated until 2000 from the whole civilian nuclear fuel cycle, after 500 years cooling |
2.2 x 1015*
7.4 x 1015* |
* This paper