Sample NO

²³⁸U (Bq·kg⁻¹)

²³²Th (Bq·kg⁻¹)

⁴⁰K (Bq·kg⁻¹)

Ra_eq (Bq·kg⁻¹)

Radiation Dose (nGy/h)

1

29.93

45.19

259.84

113.21

53.84

2

40.44

41.62

247.76

117.78

55.43

3

38.53

50.18

222.62

125.93

59.21

4

37.92

33.03

159.23

96.34

44.82

5

39.08

37.31

198.74

106.62

49.89