Özlem Karadeniz

Publications (2)3.5 Total impact

• Article: Activity concentrations of natural radionuclides and 137Cs in soils of coniferous forest sites in West Anatolia

  Özlem Karadeniz, Günseli Yaprak
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  ABSTRACT: The surveys of natural gamma-emitting radionuclides and 137Cs in surface soils of coniferous forest sites in and around Izmir were conducted during 2003–2004. The soil samples were collected from three different depths of 15 forest sites, particularly local wild edible mushrooms areas. The average activity concentrations and ranges of the natural radionuclides in the soils were as follows: 30 (14–51) Bqkg−1 of 226Ra; 40 (17–79) Bqkg−1 of 232Th; and 581 (308–879) Bqkg−1 of 40K. Moreover, the values of 137Cs activity concentrations averaged over the depth sections varied from 20 to 82Bqkg−1 with a mean value of 52Bqkg−1. Accordingly, the levels of the studied natural radionuclides in the forest soils were within the range specified by UNSCEAR (2000) report for regular soils as well as the agricultural soils from the West Anatolia, while the measured activity levels of 137Cs in the forest soils were still high in contrast to agricultural soils after 16years from the deposition of Chernobyl fallout. KeywordsNatural radionuclides– 137Cs–Forest–Soil–Izmir–West Anatolia
  European Journal of Forest Research 04/2012; 130(2):271-276. · 1.98 Impact Factor
• Article: Soil-to-mushroom transfer of 137Cs, 40K, alkali–alkaline earth element and heavy metal in forest sites of Izmir, Turkey

  Özlem Karadeniz, Günseli Yaprak
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  ABSTRACT: The present work is devoted to an investigation on the soil to mushroom transfer parameters for 137Cs and 40K radionuclides, as well as for some stable elements and heavy metals. The results of transfer factors for 137Cs and 40K were within the range of 0.06–3.15 and 0.67–5.68, respectively and the most efficiently transferred radionuclide was 40K. The TF values for 137Cs typically conformed to a lognormal distribution, while for 40K showed normal distribution. Statistically significant correlations between 137Cs soil to mushroom transfer factors and agrochemical soil properties have been revealed. Although the concentration ratios varied within the species, the most efficiently transferred elements seems to have been K, followed by Rb, Zn, Cu, Cd, S, Cs and Hg. KeywordsSoil to mushroom transfer– 137Cs– 40K–Alkali–alkaline earth elements–Heavy metals
  Journal of Radioanalytical and Nuclear Chemistry 04/2012; 288(1):261-270. · 1.52 Impact Factor