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    Ecological assessment of heavy metals in soil around a coal-fired thermal power plant in Turkey
    (Springer, 2020) Turhan, S.; Garad, A. M. K.; Hancerliogullari, A.; Kurnaz, A.; Goren, E.; Duran, C.; Karatasli, M.
    In this study, heavy metal concentrations in agricultural surface soil (0-5 cm) samples collected from the area around the Kangal lignite-fired thermal power plant were determined using energy-dispersive X-ray fluorescence spectrometry. Also, the pH values of agricultural soil samples were measured to assess the level of acidification. Geo-accumulation index (I-geo), enrichment factor (E-F), contamination factor (C-F), contamination degree (C-D), modified contamination degree (mC(D)), and pollution load index (I-PL) were estimated to assess the heavy metals pollution in soil samples. The average concentration of Fe, Ti, Mn, Cr, Ni, Zn, Zr, Co, Cu, Pb, As, Sn and Hg was found as 39,065 +/- 5096, 2262 +/- 738, 721 +/- 119, 713 +/- 236, 610 +/- 199, 82 +/- 37, 65 +/- 26, 64 +/- 19, 29 +/- 3, 17 +/- 7, 9 +/- 7, 3 +/- 1 and 2 +/- 1 mg kg(-1), respectively. The values of pH varied from 7.5 to 8.2 with an average value of 8.0 (moderately alkaline). The I-geo, E-F and C-F results reveal that the study area is heavily or very highly contaminated with Cr, Ni, and Hg. On the basis of the I-PL value, the soil samples are polluted with heavy metals. However, the mC(D) indicates moderate heavy-metal contamination of the soil samples.
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    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.