Sample no. | NORM Concentration (Bq/g) | |||
Ra-226 | Ra-228 | Ra-224 | K-40 | |
1 | 97 ± 3 | 81 ± 1 | 55 ± 3 | 13 ± 2 |
2 | 132 ± 1 | 77 ± 1 | 63 ± 1 | 11 ± 1 |
3 | 174 ± 1 | 101 ± 2 | 67 ± 2 | 16 ± 2 |
4 | 163 ± 2 | 65 ± 1 | 46 ± 1 | 7 ± 1 |
5 | 88 ± 1 | 89 ± 1 | 53 ± 1 | 9 ± 1 |
6 | 103 ± 2 | 109 ± 4 | 48 ± 2 | 12 ± 1 |
7 | 99 ± 1 | 111 ± 1 | 51 ± 1 | 13 ± 2 |
8 | 118 ± 2 | 84 ± 2 | 62 ± 1 | 10 ± 1 |
9 | 126 ± 2 | 79 ± 1 | 57 ± 3 | 6 ± 1 |
10 | 178 ± 1 | 94 ± 2 | 52 ± 1 | 8 ± 1 |