Sample code no. | Activity concentration (Bq∙L−1) | ||
226Ra | 232Th | 40K | |
W1 | 0.283 ± 0.03 | 0.076 ± 0.04 | 2.38 ± 0.133 |
W2 | 0.194 ± 0.02 | 0.124 ± 0.03 | 8.54 ± 287 |
W3 | 0.292 ± 0.02 | N.D | 1.43 ± 0.073 |
W4 | 0.501 ± 0.03 | 0.095 ± 0.02 | 2.24 ± 0.709 |
W5 | 0.213 ± 0.05 | 0.172 ± 0.02 | 1.90 ± 0.105 |
W6 | 0.358 ± 0.03 | 0.211 ± 0.03 | 4.23 ± 0.341 |
W7 | 0.087 ± 0.03 | N.D | 3.32 ± 0.175 |
W8 | 0.434 ± 0.05 | 0.142 ± 0.02 | 5.38 ± 0.276 |
W9 | 0.302 ± 0.02 | 0.023 ± 0.04 | 5.07 ± 0.266 |
W10 | 0.236 ± 0.04 | 0.186 ± 0.05 | 6.17 ± 0.323 |
W11 | 0.087 ± 0.03 | 0.075 ± 0.02 | 12.19± 0.586 |
W12 | 0.162 ± 0.02 | 0.068 ± 0.02 | 10.92 ± 0.510 |
W13 | 0.324 ± 0.14 | N.D | 7.44 ± 0.368 |
W14 | 0.361 ± 0.12 | 0.062 ± 0.02 | 2.16 ± 0.073 |
W15 | 0.357 ± 0.03 | 038 ± 0.02 | 4.91 ± 0.246 |
Range | 0.194 ± 0.02 - 0.434 ± 0.05 | 0.023 ± 0.04 - 0.186 ± 0.05 | 1.43±0.073 - 12.19 ± 0.586 |
Average | 0.28 | 0.085 | 5.24 |
WHO2006 | 1 | 0.1 | 10 |