Samples

Country

Specific activities (Bq/kg)

References

226Ra

232Th

40K

Gray

Cement

European Union

45

31

216

[14]

China

21.7 ± 1.92

22 ± 0.89

181 ± 3.75

[15]

Turkey

39.9 ± 18.0

26.4 ± 9.8

316.5 ± 88.1

[16]

South Korea

34.5 ± 1.7

19.4 ± 1.5

241 ± 6.7

[17]

Morocco

31 ± 5

19 ± 3

238 ± 29

Present Work

White

Cement

Egypt

17.45 ± 2.33

8.44 ± 1.49

4.09 ± 4.72

[18]

Turkey

32.8 ± 5.1

16.3 ± 7.6

99.2 ± 31.8

[16]

Qatar

18.9 ± 0.5

4.9 ± 0.5

62.9 ± 22.6

[19]

Serbia

18 ± 3

12 ± 5

55 ± 37

[20]

Iraq

49.577 ± 0.865

16.74 ± 2.28

32.6 ± 4.31

[21]

Morocco

25 ± 4

22 ± 3

68 ± 8

Present Work

Gypsum

Saudi Arabia

33.28 ± 4.7

47.2 ± 2.8

88 ± 4.4

[22]

Italy

6 ± 5

2 ± 2

32 ± 43

[23]

Iran

8.1 ± 0.1

2.2 ± 0.1

116 ± 11

[24]

Morocco

9 ± 1

3 ± 1

73 ± 9

Present Work

Red brick

Iran

37.0 ± 1.5

12.2 ± 0.7

851 ± 15

[24]

Albania

33.4 ± 6.4

42.2 ± 7.6

644.1 ± 64.2

[25]

Egypt

23.06 ± 2.60

23.11 ± 2.99

447.84 ± 10.16

[18]

Morocco

23 ± 4

21 ± 3

360 ± 41

Present Work

Block

Egypt

288.5 ± 17.49

77.77 ± 15.61

909.5 ± 59.73

[18]

Iran

20.7 ± 1.1

3.0 ± 0.4

436 ± 14

[24]

Morocco

27 ± 3

23 ± 3

300 ± 37

Present Work

Ceramic

Egypt

51.12 ± 2.74

40.52 ± 2.54

682.6 ± 10.13

[18]

Turkey

33.1 ± 2.5

49.5 ± 3.3

459.1 ± 51.3

[26]

Syria

65.878 ± 1.0

28.16 ± 3.0

401 ± 14.67

[21]

Morocco

28 ± 5

30 ± 5

340 ± 42

Present Work

Marble

Saudi Arabia

12.7 ± 3.4

13.2 ± 1.4

64 ± 3

[22]

Algeria

23 ± 2

18 ± 2

310 ± 3

[27]

Morocco

18 ± 2

10 ± 1

154 ± 19

Present Work

Granite

Saudi Arabia

23 ± 1.4

30.0 ± 0.4

340 ± 6.7

[22]

Turkey

67.5 ± 47.6

77.4 ± 53.0

915.3 ± 361.2

[16]

Morocco

52 ± 6

63 ± 8

705 ± 84

Present Work

Sand

Turkey

38.8 ± 10.0

29.5 ± 11.3

471.4 ± 101.2

[26]

Qatar

13.2 ± 0.3

3.34 ± 0.05

225.5 ± 6.1

[19]

Pakistan

21.5 ± 0.5

31.9 ± 0.5

519.6 ± 6.0

[28]

Morocco

22 ± 3

20 ± 3

274 ± 47

Present Work