Samples

The selected natural radionuclide’s in phosphate mine at Safaga (33˚57'E 26˚44'N) ( Bq∙kg⁻¹)

activity of the investigated radionuclide’s at El-Quseir (34˚17'E 26˚06'N) (Bq∙kg⁻¹)

activity of the investigated radionuclide’s at El-Hamrawein

(35˚12'E 26˚15'N) ( Bq∙kg⁻¹)

²²⁶Ra

²³²Th

⁴⁰K

²²⁶Ra

²³²Th

⁴⁰K

²²⁶Ra

²³²Th

⁴⁰K

Subsurface samples

222.4 ± 7.2

135.6 ± 4.7

225.2 ± 11.5

122.4 ± 5.8

112.8 ± 7.3

168.7 ± 6.5

115.4 ± 5.9

95.2 ± 4.8

132.8 ± 6.8

Surface samples upper bed

235 ± 7.8

198.2 ± 7.1

264.7 ± 12.3

154.6 ± 7.1

132.7 ± 6.2

212.5 ± 9.7

135.2 ± 6.2

122.7 ± 8.3

145.2 ± 7.8

Surface samples lower bed

255.8 ± 9.3

212.3 ± 9.2

312.8 ± 12.8

188.3 ± 7.6

167.4 ± 8.4

268.9 ± 10.2

165.8 ± 6.6

155.8 ± 9.4

188.6 ± 8.7