Materials

Activity concentration

References

²²⁶Ra

²³²Th

⁴⁰K

Titanium enamel frits

1.05 - 1018.57

1.05 - 1164.09

942.29 - 16,679.19

[22]

Painting oxides

2.35 - 72.96

1.76 - 12.88

2.26 - 200

[23]

Paits

10.5 - 43.0

0.5 - 0.5

0.5 - 7.7

[24]

Polishing

0.60 - 13.61

0.78 - 18.43

2.47 - 342.59

Present work