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    An investigation of anthropogenic pollution in soil samples from residential areas in Erzincan city center and its vicinity by evaluating chemical factors
    (Springer Heidelberg, 2018) Yalçın, Paşa; Kam, Erol; Yümün, Zeki Ünal; Kurt, Dilek
    To measure heavy metal pollution, 42 different soil samples were collected and analyzed from the center, cities, and villages of Erzincan. Average element concentrations in the soil samples in micrograms per gram were as follows: Cadmium (Cd, 6.1), Cobalt (Co, 52.2), Chromium(Cr, 739.6), Copper(Cu, 51.3), Nickel(Ni, 638.4), Lead (Pb, 14.2), and Zinc(Zn, 85.7), and these results were incompatible with natural background values. Heavy metal concentrations were at high levels, especially in agricultural regions and regions with mineral deposits. The results were compared to the allowable levels in soil dictated by pollution regulations in Turkey and some European countries. Krige (1962) method was used to evaluate the distribution of concentrations of heavy metals. Various methods such as Reverse Distance Weighted Interpolation Method (IDW), Local Polynomial, Radial-Based Function, and Kriging were used in preparing density maps. In the maps obtained, critical values for each heavy metal are defined. In addition, these critical values were compared with Krauskopf (1979) values. In this comparison, the values obtained in the samples showed ultramafic rocks in Erzincan region.
  • Küçük Resim
    Öğe
    Gross Alpha and Gross Beta Activity Concentrations in Sediments in
    (2017) Yümün, Zeki Ünal; Kurt, Dilek
    The concentrations of gross alpha and gross beta radioactivity were analyzed in Holocene sediments of the Gulf of Izmir (Eastern Aegean Sea). The sediments were collected from four different locations affected by industrial activities, overpopulation, and shipping in the Gulf of İzmir. Each sample was determined for gross alpha and gross beta radioactivity by using a low-background counter (Berthold, LB 770 10 - channel ??? low-level counter). The obtained results show that natural gross alpha and gross beta activity concentrations in the drilling cores range from 537 ? 77 to 1800 ? 207 Bq kg-1 and 993 ? 60 to 1842 ? 102 Bq kg-1, respectively. These results were compared with previous studies throughout the world, and the study could be a reference data for the future researches related to radiological mapping or environmental monitoring in the area