Table 1 Radionuclides examined in the current study

Uranium-235

²³⁵U

Actinium series

α

A

7.04 × 10⁸ years

79.8 kBq/g

Uranium-238

²³⁸U

Primordial

α

A

4.47 × 10⁹ years

12.44 kBq/g

Uranium-234

²³⁴U

Uranium-238 decay series

α

A

2.455 × 10⁵ years

231.3 MBq/g

Thorium-234

²³⁴Th

β⁻

G

24.1 days

860 TBq/g

Protactinium-234

^234mPa

β⁻

G

6.7 h

74,000 TBq/g

Thorium-230

²³⁰Th

α

A

75,440 years

762.8 MBq/g

Radium-226

²²⁶Ra

α

A

1599 years

36 GBq/g

Lead-214

²¹⁴Pb

β⁻

G

26.9 min

1.213 × 10⁶ TBq/g

Bismuth-214

²¹⁴Bi

α

G

28.7 min

1.63 × 10⁶ TBq/g

Lead-210

²¹⁰Pb

β⁻

G

22.6 years

2.84 TBq/g

Polonium-210

²¹⁰Po

α

A

138.4 days

166.272 TBq/g

Thorium-232

²³²Th

Primordial

α

A

1.4 × 10¹⁰ years

4.07 kBq/g

Actinium-228

²²⁸Ac

Thorium-232 decay series

β⁻

G

6.15 h

82,800 TBq/g

Thorium-228

²²⁸Th

α

A

1.913 years

30.366 TBq/g

Lead-212

²¹²Pb

β⁻

G

10.6 h

51,407 TBq/g

Bismuth-212

²¹²Bi

β⁻

G

1.009 h

542,000 TBq/g

Tantalum-208

²⁰⁸Tl

β⁻

G

183.2 s

1.096 × 10⁷ TBq/g

Potassium-40

⁴⁰K

Primordial

β⁻

G

1.248 × 10⁹ years

265.4 kBq/g

Carbon-14

¹⁴C

Cosmic ray

β⁻

G

5700 years

170 GBq/g

Tritium

³H

β⁻

G

12.32 years

356.2 TBq/g

Americium-241

²⁴¹Am

Anthropogenic

α

G

432.5 years

126.9 GBq/g

Plutonium-238

²³⁸Pu

α

G

87.8 years

634 GBq/g

Plutonium-239

²³⁹Pu

α

A

24,110 years

2.297 GBq/g

Plutonium-240

²⁴⁰Pu

α

A

6561 years

8.404 GBq/g

Cesium-137

¹³⁷Cs

β⁻

G

30.08 years

3.214 TBq/g

Cesium-134

¹³⁴Cs

β⁻

G

2.0652 years

47.864 TBq/g

Iodine-131

¹³¹I

β⁻

G

8.0252 days

4598.8 TBq/g

Cobalt-60

⁶⁰Co

β⁻

G

5.2749 years

41.868 TBq/g