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    Determination of essential and toxic elements content of Turkish peanut and assessment of health risk
    (Taylor & Francis Ltd, 2022) Abugoufa, A. H. A.; Turhan, S.; Kurnaz, A.; Karatasli, M.
    Peanut (Arachis hypogaeaL.), which is one of the most important members of the legumes family, contains appreciable amounts of high-quality dietary oil and vegetable protein. It can be added to many foods to enhance their levels of high-quality protein in diets lacking in nutrition. In this study, 18 essential elements (V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Se, Mo, Mg, P, S, K, Ca, Cl, Br and I) and 4 non-essential toxic metals (Cd, Sn, Hg, and Pb) in 42 peanut samples from Mediterranean region of Turkey were analysed by using an energy-dispersive X-ray fluorescence spectrometer. The most abundant essential elements of K, P, S, Ca, Mg and Cl were determined with average concentrations of 13,437, 5058, 3451, 1786, 1759 and 209 mg kg(-1), respectively. The daily intake of toxic metals for an adult person due to the consumption of peanuts was estimated based on the measured concentrations of the toxic metals (V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sn, Cd, Pb, and Hg). The results revealed that peanut samples contain health-enhancing nutritional elements and consumption of peanut samples as food does not pose any health risk for toxic metals.
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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.