Izotope

²³⁸U

²³⁴U

²³²Th

²³⁰Th

²²⁸Th

²²⁶Ra

²¹⁰Pb

²¹⁰Po

Suma

Effective dose

0.28

0.42

0.25

0.37

0.35

5.20

30.4

52.8

90.0