Table 1.
Activity concentration of different samples at different locations and 235U/238U ratio.
| Sample | Activity Concentration (Bq.kg−1) 238U 232Th 40K 235U | 235U/238U ratio | |||
|---|---|---|---|---|---|
| A1 | 177.4 ± 39.7 | 397.5 ± 71.5 | 105.0 ± 15.8 | 9.8 ± 8 | 0.055 |
| A2 | 146.9 ± 26.6 | 286.0 ± 12.0 | 93.0 ± 10.7 | 7.3 ± 0.5 | 0.049 |
| A3 | 150.4 ± 42.9 | 313.9 ± 12.1 | 103.0 ± 13.5 | 6.3 ± 0.4 | 0.042 |
| B1 | 160.9 ± 63.9 | 259.4 ± 50.9 | 168.9 ± 17.5 | 11.1 ± 0.9 | 0.069 |
| B2 | 151.4 ± 40.7 | 278.1 ± 36.1 | 83.5 ± 11.3 | 9 ± 0.8 | 0.059 |
| B3 | 146.7 ± 21.0 | 254.2 ± 41.0 | 110.4 ± 12.7 | 6.6 ± 0.5 | 0.045 |
| C1 | 37.6 ± 4.9 | 62.5 ± 18.3 | 151.1 ± 14.9 | 4 ± 0.5 | 0.106 |
| C2 | 36.5 ± 7.0 | 50.0 ± 7.8 | 138.6 ± 19 | 2 ± 0.3 | 0.055 |
| C3 | 36.6 ± 7.2 | 61.0 ± 13.8 | 144.8 ± 17.5 | 2.5 ± 0.2 | 0.068 |
| D1 | 121.6 ± 26.9 | 207.3 ± 44.6 | 94.8 ± 11.5 | 11 ± 08 | 0.090 |
| D2 | 128.0 ± 28.1 | 206.7 ± 20.2 | 117.6 ± 13.4 | 5.7 ± 0.6 | 0.045 |
| D3 | 128.3 ± 36.2 | 233.7 ± 51.0 | 89.4 ± 14.3 | 9.4 ± 0.8 | 0.073 |
| E1 | 110.6 ± 22.7 | 194.8 ± 24.4 | 91.8 ± 12.6 | 6.7 ± 0.7 | 0.061 |
| E2 | 99.3 ± 19.8 | 188.5 ± 32.6 | 129.9 ± 18.2 | 5.2 ± 0.5 | 0.052 |
| F1 | 128.8 ± 19.0 | 245.2 ± 36.8 | 76.0 ± 9.8 | 10.6 ± 0.9 | 0.082 |
| F2 | 107.5 ± 23.5 | 207.1 ± 34.9 | 118.0 ± 12.7 | 7.8 ± 0.7 | 0.073 |
| G1 | 42.7 ± 5.4 | 52.2 ± 13.5 | 150.0 ± 14.6 | 3.1 ± 0.2 | 0.073 |
| G2 | 39.1 ± 21.4 | 70.9 ± 5.2 | 134.1 ± 14.2 | 3.8 ± 0.2 | 0.097 |
| H1 | 88.7 ± 13.7 | 167.1 ± 39.7 | 92.9 ± 8.5 | 5.1 ± 0.4 | 0.057 |
| H2 | 96.9 ± 22.7 | 194.6 ± 13.7 | 107.5 ± 9.2 | 11.1 ± 0.9 | 0.115 |
| I1 | 103.6 ± 33.5 | 198.4 ± 32.2 | 133.8 ± 12.6 | 3.1 ± 0.2 | 0.030 |
| I2 | 90.4 ± 32.0 | 163.4 ± 38.9 | 142.2 ± 12.8 | 6.8 ± 0.5 | 0.075 |
| J1 | 101.5 ± 31.8 | 177.6 ± 21.2 | 130.5 ± 11.6 | 5.8 ± 0.4 | 0.057 |
| J2 | 137.4 ± 35.6 | 286.6 ± 61.9 | 130.7 ± 13.1 | 10.4 ± 0.8 | 0.076 |
| K1 | 83.4 ± 21.6 | 154.5 ± 25.0 | 110.1 ± 8.8 | 2.5 ± 0.2 | 0.030 |
| K2 | 86.4 ± 13.8 | 192.2 ± 9.7 | 107.5 ± 7.6 | 5.7 ± 0.3 | 0.066 |
| L1 | 135.2 ± 35.7 | 257.1 ± 47.9 | 131.8 ± 11.5 | 7.6 ± 0.7 | 0.056 |
| L2 | 163.3 ± 28.1 | 330.9 ± 65.5 | 122.8 ± 10.3 | 10.8 ± 0.9 | 0.066 |
| M1 | 93.9 ± 12.5 | 172.5 ± 34.2 | 56.1 ± 5.8 | 8.2 ± 0.6 | 0.087 |
| M2 | 95.9 ± 31.3 | 184.8 ± 30.2 | 120.5 ± 11.9 | 2.5 ± 0.4 | 0.026 |
| Min | 36.6 ± 7.2 | 50.0 ± 7.8 | 56.1 ± 5.8 | 2 ± 0.3 | 0.026 |
| Max | 177.4 ± 39.7 | 397.5 ± 71.5 | 168.9 ± 17.5 | 11.1 ± 0.9 | 0.115 |
| Average ± St. Dev. | 107.6 ± 40.2 | 201.6 ± 84.8 | 116.2 ± 25.2 | 6.86 ± 2.9 | 0.065 ± 0.021 |