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