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  • Küçük Resim
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    Evaluation Of Natural Radioactivity Levels And Potential Radiological Hazards Of Common Building Materials Utilized İn Mediterranean Region, Turkey
    (Springer [Commercial Publisher], 2021) Karataşlı, Muhammet; Turhan, Şeref; Kurnaz, Aslı
    Radiometric measurement of building materials is very important to assess the internal and external exposure caused by the ionizing radiation emitted from terrestrial radionuclides in building materials. The activity concentrations of Ra-226, Th-232, and K-40 in fifty-eight samples of fifteen different structural and covering building materials commonly used in Osmaniye province located in the Mediterranean region of Turkey were measured by using gamma-ray spectroscopy. The activity concentrations of Ra-226, Th-232, and K-40 varied from 2.5 +/- 0.1 (marble) to 145.7 +/- 4.4 (clay brick), 1.3 +/- 0.1 (marble) to 154.3 +/- 4.1 (marble), and 8.6 +/- 0.2 (sand) to 1044.1 +/- 70.3 (granite), respectively. Radiological parameters (activity concentration index, alpha index, indoor absorbed gamma dose rate and the corresponding annual effective dose rate, and excess lifetime cancer risk) were estimated to evaluate the health hazards associated with these building materials. Since the estimated values of these parameters are within the recommended safety limits or criteria values, the use of the studied building materials in the construction of dwellings can be considered to be safe for the residents of the region.
  • Küçük Resim
    Öğe
    Radiological assessment of internal exposure resulting from ingestion of natural radionuclides in arachis hypogaea l. Grown in turkey
    (CODON Pub., 2020) Karataşlı, Muhammet; Turhan, Şeref; Abugoufa, A.H.A.; E, Goren; Kurnaz, A.; Hancerliogullari, A.
    Groundnut (Arachis hypogaea L.) is one of the most important of all legumes and contains appreciable amounts of dietary oil and protein. Groundnut is added to many foods to enhance their levels of high-quality protein in diets lacking in nutrition. In this study, 51 groundnut samples were collected from the Mediterranean region of Turkey and analysed for naturally occurring radioactive isotopes of radium (Ra-226), thorium (Th-232) and potassium (K-40). The activity concentrations of Ra-226, Th-232 and K-40 in groundnut samples varied from 2.9 +/- 0.8 to 7.6 +/- 1.0 Bq kg(-1) (dw), with an average of 5.4 Bq kg(-1) (dw); 4.4 +/- 0.9 to 10.7 +/- 1.2 Bq kg(-1) (dw), with an average of 6.9 Bq kg(-1) (dw) and 246.3 +/- 18.2 to 541.8 +/- 40.1 Bq kg(-1) (dw), with an average of 427.1 Bq kg(-1) (dw), respectively. The annual effective radiation dose was estimated to assess the health hazards caused by the ingestion of groundnut samples based on the measured activity concentrations of the radionuclides contained in them. The annual effective radiation dose varied from 6.5 to 10.1 mu Sv y(-1), with an average of 8.3 +/- 0.1 mu Sv y(-1). The results revealed that consumption of Turkish groundnuts does not pose any radiological health hazards.