Countries

activity concentrations (Bq·kg⁻¹)

Références

²²⁶Ra

²³²Th

⁴⁰K

USA

37

33.3

18.5

[19]

Brazil

10.2

12.6

51

[20]

Jordan

3.7

40.7

44.7

[21]

Turkey

44

26

441

[6]

Netherlands

8

11

200

[22]

India

4.57

119.42

388.78

[8]

Egypt

9.2

3.3

47.3

[7]

Bangladesh

14.2

25

158.4

[23]

Kenya

11

5

802

[24]

Côte d’Ivoire

7.76 ± 1.84

5.2 ± 1.36

217.31 ± 5.03

Present work