Journal of Medical Physics
TECHNICAL NOTE
Year
: 2012  |  Volume : 37  |  Issue : 1  |  Page : 54--60

Specific activities of natural rocks and soils at quaternary intraplate volcanism north of Sana«SQ»a, Yemen


Shaban Harb1, Abd El-Hadi El-Kamel2, Abd El-Bast Abbady1, Imran Issa Saleh3, Abdallah Ibrahim Abd El-Mageed2 
1 Department of Physics, Faculty of Science, South Valley University, Egypt
2 Department of Physics, Faculty of Science, Assiut University, Egypt
3 Department of physics, Faculty of Education, Toor-El-Baha, Aden University, Yemen

Correspondence Address:
Abdallah Ibrahim Abd El-Mageed
Department of Physics, Faculty of Science, Assiut University
Egypt

The level of natural radioactivity in rocks and soil of 32 samples collected from locations at North Sana«SQ»a in Yemen was measured. Concentrations of radionuclides in rocks and soils samples were determined by gamma-ray spectrometer using high purity germanium (HPGe) detector with specially designed shield. The average radioactivity concentrations of 226 Ra, 232 Th, 40 K were determined and expressed in Bq/kg. The results showed that these radionuclides were present in concentrations of 21.79 ± 3.1, 19.5 ± 2.6 and 399.3 ± 16 Bq/kg, respectively, for rocks. For soil, the corresponding values were 48.2 ± 4.4, 41.7 ± 4.5 and 939.1 ± 36 Bq/kg, respectively. Also, the radiological hazard of the natural radionuclide content, radium equivalent activity, total dose rates, external hazard index and gamma activity concentration index of the (rocks/soils) samples in the area under consideration were calculated. The dose rates at 1 m above the ground from terrestrial sources were 38.39 and 86.89 nGy/h for rocks and surface soil, respectively, which present no significant health hazards to humans.


How to cite this article:
Harb S, El-Kamel AE, Abbady AE, Saleh II, Abd El-Mageed AI. Specific activities of natural rocks and soils at quaternary intraplate volcanism north of Sana'a, Yemen.J Med Phys 2012;37:54-60


How to cite this URL:
Harb S, El-Kamel AE, Abbady AE, Saleh II, Abd El-Mageed AI. Specific activities of natural rocks and soils at quaternary intraplate volcanism north of Sana'a, Yemen. J Med Phys [serial online] 2012 [cited 2020 Nov 29 ];37:54-60
Available from: https://www.jmp.org.in/article.asp?issn=0971-6203;year=2012;volume=37;issue=1;spage=54;epage=60;aulast=Harb;type=0