Location

Range (Bq·L⁻¹)

References

KSA—Adham governorate

17.06 - 89.54

(Abuelnaga et al., 2021)

KSA—Hafr Al Batin and Thybiah

0.03 - 3.20

(Mamun et al., 2022)

KSA—Al-Baha Region

0.24 - 1.52

(Al-Ghamdi, 2019)

KSA—Al-Jawa Region

1.45 - 9.15

(Althoyaib et al., 2015)

KSA—Al-Zulfi—Al Qassim

0.3 - 3.66

(Alharbi et al., 2018)

Sudan—Khartoum

1.58 - 345.10

(Idriss et al., 2011)

Algeria—Tassili

0.67 - 21.25

(Amrani et al., 2000)

Jordan

2.8 - 116

(Al-Kazwini et al., 2003)

Poland

35.3 and 272.0

(Przylibski et al., 2022)

Nigeria—Ibadan

2.18 to 76.75

(Ademola & Oyeleke, 2017)

Turkey—Western black sea region

<3.00 to 12.03

(Özdemir Öge & Özdemir, 2019)

Pakistan

6.0 - 13.6

(Haroon & Muhammad, 2022)

China—Baoji

30.0 - 127

(Xinwei, 2006)

KSA—Adham governorate

12 - 38

Present study