Studies of 226Ra, 28Th and 40K Concentrations in Cooking Oil and Estimation the Radiological Hazards to Human Health

Amal Al-Ghamdi, Jamilah Alzahrani


The specific activity of Uranium (238U),Thorium (232Th) and Potassium (40K) were measured in different brands of cooking oil that are available in Saudi Arabia markets. The gamma spectrometry method with high-purity germanium (HPGe) detector was used. The results indicate that the activity concentrations measured  for 226Ra varied  from 0.23 to 6.05 Bq l-1 , 232Th varied from 0.68 to 2.89Bq l-1  and 40K from 1.32 to 21.81Bq l-1.The corresponding average activity concentrations of 226Ra,  228Th and 40K were found to be 2.41, 0.85 and 8.87Bq l-1, respectively. The total annual effective dose was estimated to be 9.51μSvy-1 whichis less than the world total dose value 290 μSvy-1 for all food reported by  UNSCEAR 2000. The results show that all the examined samples do not create any significant source of radiation hazard and safe for the public health.


Natural radioactivity; absorbed dose; annual effective dose.

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UNSCEAR”' United Nations Scientific Committee on the Effects of Atomic Radiation 2000. "Sources and effects of ionizing radiation." In, edited by UNSCEAR. New York , 2000.

Shanthi, G., et al. "Radioactivity in food crops from high-background radiation area in southwest India." Curr. Sci 97.9 (2009): 1331-1335.‏

Awudu, A. R., et al. "Preliminary studies on 226Ra, 228Ra, 228Th and 40K concentrations in foodstuffs consumed by the inhabitants of the Accra metropolitan area, Ghana." Journal of Radioanalytical and Nuclear Chemistry 291.3 (2012): 635-641.‏

Görür, F. Korkmaz, et al. "Radioactivity and heavy metal concentrations of some commercial fish species consumed in the Black Sea Region of Turkey." Chemosphere 87.4 (2012): 356-361.

Amin, Rafat M., and Fawzia Ahmed. "Estimation of annual effective dose to the adult Egyptian population due to natural radioactive elements in ingestion of spices." Pelagia Research Library Advances in Applied Science Research 4.5 (2013): 350-354

James, Joshy P., et al. "Evaluation of internal dose to members of the public at the Kaiga site, India, due to the ingestion of primordial radionuclide 40K." Radiation protection dosimetry 153.1 (2013): 56-63

Tchokossa, P., et al. "Assessment of radioactivity contents of food in the oil and gas producing areas in Delta State, Nigeria." International Journal of Science and Technology 3.4 (2013): 245-250.‏

Asaduzzaman, Kh, et al. "Measurement of radioactivity and heavy metal levels in edible vegetables and their impact on Kuala Selangor communities of Peninsular Malaysia." Radiation protection dosimetry (2015): ncv237.‏

Kumari, Raj, et al. "Activity concentration and annual effective ingestion dose assessment due to natural radionuclides present in cereal samples consumed by inhabitants of India." International Journal of Low Radiation 10.2 (2015): 155-168.‏

Rosa, M. M. L., et al. "Determination of 234U, 235U, 238U, 228Th, 230Th, 232Th, 226Ra, 228Ra, and 210Pb in foods from Brazilian Total Diet." Journal of Radioanalytical and Nuclear Chemistry 306.3 (2015): 695-700.‏

Alharbi. W. R. and Zain M. Alamoudi ; Radiological hazard of coffee to human : a comparative of Arabic and Turkish coffee , Vol. 12(5), pp. 327-341, 2 February, 2017 ,

Al-Ghamdi, A. H. "Activity Concentrations and Mean Annual Effective Dose of Spices Food Consumed by Inhabitants of Saudi Arabia." Journal of American Science 10.11 (2014).‏

Al-Zahrani, J. H. "Natural Radioactivity and Heavy Metals Measurement in Rice and Flour Consumed by the Inhabitants in Saudi Arabia." Advance Journal of Food Science and Technology 12.12 (2016): 698-704.‏

Hamidalddin, Safia HQ, and Jameelah H. AlZahrani. "An assessment of Some Toxic, Essential Elements and Natural Radioactivity, in Most Common Fish Consumed in Jeddah-Saudi Arabia." Food and Nutrition Sciences 7.04 (2016): 301.‏

] IAEA.. ''International Atomic Energy Agency. Measurement of radiation in Food and the Environment. Guidebook. Technical Report Series No. 295 (Vienna: IAEA) , 1989.

El-Taher, Atef. "Radioactivity measurements and radiation dose assessments in soil of Al-Qassim region, Saudi Arabia." Indian Journal of Pure & Applied Physics (IJPAP) 52.3 (2015): 147-154.‏

ICRP. 'International Committee of Radiological Protection. Age dependant doses to members of public from intake of radionuclides: compilation of ingestion and inhalation coefficients. ICRP publication 72, Elsevier Science ,1996 .


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