Determination of the Potassium Content in Fruit Samples by Gamma Spectrometry to Emphasize its Health Implications

Keywords: 40K, Health, HPGe, NaI, Fruits, Potassium


In this study, the activity concentration of 40K and its’ concentrations in 24 different types of fruits were determined using high purity germanium (HPGe) and sodium iodide scintillation (NaI) detectors. The results of the two measurements are consistent. The Maximum and minimum activities of 40K in dry samples were 750.61 ± 11.88 and 15.64 ± 0.86 Bq kg−1 in apricot and olive, respectively, while in fresh samples they were 152.27 ± 2.12 and 1.99 ± 0.11 Bq kg−1 in dates and olive, respectively. The highest and lowest potassium contents were 489.81 and 6.42 mg/100gm in fresh dates and olives, respectively.  Drupe and Tropical fruits, as a fruit family, typically had the highest level of 40K activity and potassium concentration, whereas pome fruits showed the lowest levels. Many of these commonly consumed fresh fruits with rich potassium and water contents are lowering hypertension and improving the hydration status (HS) in people's nutrition. The rate of potassium-40 and total potassium concentration intake for a single unit or portion of the fruits was calculated.  


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Author Biographies

Dedawan S. Saleh, Department of Physics, Faculty of Science and Health, Koya University, Koya KOY45, Kurdistan Region - F.R., Iraq

Dedawan S. Saleh is an Assistant Physicist at the Department of Physics, Koya University. He has a B.Sc. degree in Physics.

Saddon T. Ahmad, Faculty of Medicine, Koya University, Koya KOY45, Kurdistan Region - F.R., Iraq

Saddon T. Ahmad is a professor at the Faculty of Medicine, Koya University. He has a B.Sc. degree in Physics and a Ph.D. degree in Nuclear Physics. His research interests are in nuclear structure, nuclear radiation and nuclear models. 

Sarmad R. Kareem, Faculty of Medicine, Koya University, Koya KOY45, Kurdistan Region - F.R., Iraq

Sarmad R. Kareem is an Assistant Professor, joined the Faculty of Medicine at Koya University in 2007. He has a M.B.Ch.B and F.I.C.M.S. (Pathology). He is a specialist Pathologist. 


Abt, I., Garbini, L. and Schulz, O., 2016. Measurement of the potassium content of different food samples with high purity germanium detectors. Detection, 4(3), pp.73-85.

Acquah, G.F. and Pooko-Aikins, M., 2013. Foodstuffs and cancer: Analysis of radionuclides and its radiation levels in common Ghanaian maize. International Journal of Sciences Basic and Applied Research (IJSBAR), 12(1), pp.1-7.

Adedokun, M.B., Aweda, M.A., Maleka, P.P., Obed, R.I., Ogungbemi, K.I. and Ibitoye, Z.A., 2019. Natural radioactivity contents in commonly consumed leafy vegetables cultivated through surface water irrigation in Lagos state, Nigeria. Journal of Radiation Research and Applied Science, 12(1), pp.147-156.

Ahmad, S.T., Almuhsin, I.A. and Hamad, W.M., 2021. Radon activity concentrations in Jale and Mersaid warm water springs in Koya District, Kurdistan Region-Iraq. Journal of Radioanalytical and Nuclear Chemistry, 328(3), pp.753-768.

Al-Absi, E., Al-Abdullah, T., Shehadeh, H. and Jamal, A.J., 2015. 226Ra, 228Ra, and 40K activity concentration in some vegetables consumed in Jordan, and resultant annual ingestion effective dose. Radiation Protection and Environment, 38(1), pp. 29-34.

Al-Farsi, M.A. and Lee, C.Y., 2008. Nutritional and functional properties of dates: A review. Critical Reviews in Food Science and Nutrition, 48(10), pp.877-887.

Alharbi, A. and El-Taher, A., 2013. A study on transfer factors of radionuclides from soil to plant. Life Science Journal, 10(2), pp.532-539.

Al-Masri, M., Mukallati, H., Al-Hamwi, A., Khalili, H., Hassan, M., Assaf, H., Amin, Y. and Nashawati, A., 2004. Natural radionuclides in Syrian diet and their daily intake. Journal of Radioanalytical and Nuclear Chemistry, 260(2), pp.405-412.

Anavi, S., 2013. Nutrition and Health-the Importance of Potassium. International Potash Institute, Switzerland, pp.3.

Arena, V., 1969. A problem on potassium-40 for radiation biology courses. The American Biology Teacher, 31(6), pp.379-382.

Aswood, M.S., Jaafar, M.S. and Bauk, S., 2013. Assessment of radionuclide transfer from soil to vegetables in farms from Cameron Highlands and Penang,(Malaysia) using neutron activation analysis. Applied Physics Research, 5(5), pp.85.

Azeez, H.H., Ahmad, S.T. and Mansour, H.H., 2018. Assessment of radioactivity levels and radiological-hazard indices in plant fertilizers used in Iraqi Kurdistan Region. Journal of Radioanalytical and Nuclear Chemistry, 317(3), pp.1273-1283.

Azeez, H.H., Mansour, H.H. and Ahmad, S.T., 2019. Transfer of natural radioactive nuclides from soil to plant crops. Applied Radiation and Isotopes, 147, pp.152-158.

Burnier, M., 2019. Should we eat more potassium to better control blood pressure in hypertension? Nephrology Dialysis Transplantation, 34(2), pp.184-193.

Canbazoğlu, C., and Mahmut, D., 2013. Canbazoğlu, Cumhur, and Mahmut Doğru. A preliminary study on 226Ra, 232Th, 40K and 137Cs activity concentrations in vegetables and fruits frequently consumed by inhabitants of Elazığ Region, Turkey. Journal of Radioanalytical and Nuclear Chemistry, 295(2), pp.1245-1249.

Cunningham, J., Milligan, G. and Trevisan, L., 2001. Minerals in Australian Fruits and Vegetables. Food Standards Australia, New Zealand.

Currie, L.A., 1968. Limits for qualitative detection and quantitative determination. Application to radiochemistry. Analytical Chemistry, 40(3), pp.586-593.

Emumejaye, K., 2012. Determination of potassium-40 concentration in some powdered milk samples consumed in Delta State, Nigeria. Journal of Applied Physics, 2, pp.8-12.

Escareño-Juárez, E. and Vega-Carrillo, H.R., 2012. 40K measurement to determine the total potassium content. Revista Mexicana de Física, 58(3), pp.211-214.

Harb, S., 2015. Natural radioactivity concentration and annual effective dose in selected vegetables and fruits. Journal of Nuclear and Particle Physics, 5(3), pp.70-73.

Hegedűs, A., Papp, N. and Stefanovits-Bányai, É., 2013. Review of nutritional value and putative health-effects of quince (Cydonia oblonga Mill.) fruit. International Journal of Horticultural Science, 19(3-4), pp.29-32.

Hoeling, B., Reed, D. and Siegel, P.B., 1999. Going bananas in the radiation laboratory. American Journal of Physics, 67(5), pp.440-442.

Houston, M. C., 2011. The importance of potassium in managing hypertension. Current Hypertension Reports, 13(4), pp.309-317.

Htwe, K.M., and Lwin, T.Z., 2010. Determination of activite of 40K in chemical sample. Journal Kyaukse Arts and Science, 2(1), pp.1-12. Available from: https://www.file:///C:/Users/HFC/Downloads/DETERMINATION%20OF%20ACTIVITY%20(1).pdf [Last accessed on 2022 Aug 01].

Hussain, R.O. and Hussain, H.H., 2011. Investigation the natural radioactivity in local and imported chemical fertilizers. Brazilian Archives of Biology and Technology, 54(4), pp.777-782.

Kardalas, E., Paschou, S.A., Anagnostis, P., Muscogiuri, G., Siasos, G. and Vryonidou, A., 2018. Hypokalemia: A clinical update. Endocrine Connections, 7(4), pp.R135-R146.

L’Annunziata, M.F. 2012. Handbook of Radioactivity Analysis. 3rd ed. Academic Press, Elsevier Inc., USA, Cambridge.

Leutz, H., Schulz, G. and Wenninger, H., 1965. The decay of potassium-40. Zeitschrift Für Physik, 187(2), pp.151-164.

Liang, L., Wu, X., Zhu, M., Zhao, W., Li, F., Zou, Y. and Yang, L., 2012. Chemical composition, nutritional value, and antioxidant activities of eight mulberry cultivars from China. Pharmacognosy Magazine, 8(31), pp.215-224.

Maxwell, A.P., Linden, K., O’Donnell, S., Hamilton, P.K. and McVeigh, G.E., 2013. Management of hyperkalaemia. The journal of the Royal College of Physicians of Edinburgh, 43(3), pp.246-251.

Montenegro-Bethancourt, G., Johner, S.A., and Remer, T., 2013. Contribution of fruit and vegetable intake to hydration status in schoolchildren. The American Journal of Clinical Nutrition, 98(4), pp.1103-1112.

Mujais, S.K. and Katz, A.I., 1992. Potassium deficiency. In: The Kidney: Physiology and Pathophysiology. Vol. 2. Raven Press, NewYork, pp.2249-2278.

Najam, L.A., Tawfiq, N.F. and Kitha, F.H., 2015. Measuring radioactivity level in various types of rice using NaI (Tl) detector. American Journal of Engineering Research, 4(3), pp.126-132.

National Academies of Sciences., 2019. Dietary Reference Intakes for Sodium and Potassium. The National Academics Press, Washington, DC. Pawloski, J., 2015. Hypotensive Effects of Potassium and Magnesium. Arizona State University, Phoenix.

Perez, V. and Chang, E.T., 2014. Sodium-to-potassium ratio and blood pressure, hypertension, and related factors. Advances in Nutrition, 5(6), pp.712-741.

Peterson, R., 1996. Experimental γ Ray Spectroscopy and Investigations of Environmental Radioactivity. Spectrum Techniques, Tennessee. Pourimani, R., Noori, M. and Madadi, M., 2015. Radioactivity concentrations in eight medicinal and edible plant species from Shazand, Iran. International Journal of Ecosystem, 5(1), pp.22-29.

Priharti, W. and Samat, S.B., 2016. Radiological risk assessment from the intake of vegetables and Fruits in Malaysia. Malaysian Journal of Analytical Sciences, 20(6), pp.1247-1253.

Salih, N.F., Hussein, Z.A. and Sedeeq, S.Z., 2019. Environmental radioactivity levels in agricultural soil and wheat grains collected from wheat-farming lands of Koya district, Kurdistan region-Iraq. Radiation Protection and Environment, 42(4), pp.128-137.

Santos Jr. J.A., Cardoso J.J., Silva C.M., Silveira S.V. and Amaral R.D., 2005. Analysis of the 40K levels in soil using gamma spectrometry. Brazilian Archives of Biology and Technology, 48, pp.221-228.

Sarayegord, A.N., Abbasisiar, F., Abd, A.P. and Ghaisinezhad, M., 2009. Determination of 40K concentration in milk samples consumed in TehranIran and estimation of its annual effective dose. Iranian Journal of Radiation Research, 7(3), pp.159-164.

Saxena, K., 1989. Clinical features and management of poisoning due to potassium chloride. Medical Toxicology and Adverse Drug Experience, 4(6), pp.429-443.

Shrimanker I., Bhattarai S., 2019. Electrolytes. StatPearls Publishing, Treasure Island, FL.

Smail, J.M., Ahmad, S.T. and Mansour, H.H., 2022. Estimation of the natural radioactivity levels in the soil along the Little Zab River, Kurdistan Region in Iraq. Journal of Radioanalytical and Nuclear Chemistry, 331(1), pp.119-128.

Steddon, S., Chesser, A., Ashman, N. and Cunningham, J., 2014. Oxford Handbook of Nephrology and Hypertension. Oxford University Press, Oxford.

Tin, M.K. and Wai, Z.O., 1993. Determination of Potassium Content in Myanmar’s Clays by High Resolution Gamma Spectrometry and EDXRF Spectrometry. International Atomic Energy Agency, Vienna.

Tolstykh, E.I., Degteva, M.O., Bougrov, N.G. and Napier, B.A, 2016. Body potassium content and radiation dose from 40K for the urals population (Russia). PloS One, 11(4), pp.0154266.

Tzortzis, M. and Tsertos, H., 2004. Determination of thorium, uranium and potassium elemental concentrations in surface soils in Cyprus. Journal of Environmental Radioactivity, 77(3), pp.325-338.

Vaessen, H.A.M. and van de Kamp, C.G., 1989. Sodium and potassium assay of foods and biological substrates by atomic absorption spectroscopy (AAS). Pure and Applied Chemistry, 61(1), pp.113-120.

Vicente, A.R., Manganaris, G.A., Darre, M., Ortiz, C.M., Sozzi, G.O., and Crisosto, C.H., 2022. Compositional determinants of fruit and vegetable quality and nutritional value. In Postharvest Handling: A Systems Approach. Academic Press, United States, pp.565-619.

Viera, A.J. and Wouk, N., 2015. Potassium disorders: Hypokalemia and hyperkalemia. American Family Physician, 92(6), pp. 487-495.

Weaver, C.M. 2013. Potassium and Health. Advances in Nutrition, 4(3), pp.368S-377S.

How to Cite
Saleh, D. S., Ahmad, S. T. and Kareem, S. R. (2022) “Determination of the Potassium Content in Fruit Samples by Gamma Spectrometry to Emphasize its Health Implications”, ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY, 10(2), pp. 62-72. doi: 10.14500/aro.11053.