Sample no. | Radium equivalent activity (Bq/kg−1) | Absorbed dose (nGyh−1) | Deff (indoor) (mSv/y) | Deff (outdoor) (mSv/y) | Excess lifetime cancer risk outdoors (CR)×10−3 |
Iron | 378.86 | 163.86 | 0.73 | 0.18 | 2.54 |
Copper | 1.12 | 2.79 | 0.012 | 0.003 | 0.04 |
Aluminium | 1.70 | 6.54 | 0.029 | 0.007 | 0.10 |
Wood | 1.80 | 5.04 | 0.022 | 0.006 | 0.08 |
Range of average | 1.12 - 378.86 | 2.79 - 163.86 | 0.012 - 0.73 | 0.003 - 0.18 | 0.04 - 2.54 |
Total average | 95.87 | 44.56 | 0.20 | 0.05 | 0.69 |
UNSCEAR 2000 | <370 | 60 | 0.42 | 0.07 | 0.29 |