Item

Mean activity concentration Bq/kg (range)

226Ra

232Th

40K

Country

1

7.5 (4 - 13.5)

4.2 (2.8 - 6.7)

27.5 (19 - 39.6)

Libya, Beach sand of Tripoli, 2008 [4]

2

(58.8 - 102.1)

-

-

Libya, Aljabel. Al. Gharbi-Using Portable

Nuclear Radiation Detector; 2011 [5]

3

-

-

-

Libya, North western,2001 [6]

4

26.02 (17.09 - 34.03)

30 (11 - 64)

400 (140 - 850)

Iraq, kurkukoil field 2006 [7]

5

20.05 (10.87 - 30.94)

16.43 (6.78 - 20.61)

216.69 (127.74 - 272.7)

Qatar state soil in Dukhan oil field 2015 [8]

6

22.03 (1.8 - 76.4)

27.91 (6.3 - 85.5)

285.0 (84 - 516.7)

Jordan, soil in Tafilla, 2012 [9]

7

16 (46 - 115)

10

370

Kuwait before and After war 2985 [10]

8

(32.2 - 63.7)

(5 - 13.8)

(44.3 - 95.6)

(2.3 - 15.3)

(96 - 102)

(29 - 582)

Egypt, Beach sand Dune 1997 [11]

9

30 (2 - 110)

25 (2 - 140)

370 (66 - 1150)

Algeria, 2008 [12]

10

23 (10 - 64)

20 (10 - 32)

270 (78 - 780)

Syria, phosphate rocks 1981 [13]

11

12.9 (0.15 - 41)

6.98 (4.21 - 9.92)

278 (167.79 - 419.52)

Nigeria, Akuk, Ondo state 2001 [14]