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    Öğe
    Cross-border response of mosses to heavy metal atmospheric deposition in Southeastern Bulgaria and European Turkey
    (Springer, 2009) Coskun, Mahmut; Yurukova, L.; Cayir, A.; Coskun, Muenevver; Gecheva, G.
    First cross-border atmospheric pollution of 11 heavy metals and toxic elements assessed by Hypnum cupressiforme was reported for a part of Southeastern Europe (Southeastern Bulgaria and European Turkey). Moss monitoring technique followed the main requirements of European Moss Survey. Moss samples were collected in April 2006 both in Bulgaria and Turkey. Concentration of Al, As, Cd, Cr, Cu, Fe, Ni, Pb, Sb, V, and Zn were determined by ICP-AES. Interlaboratory parallel calibration (exchanged four moss samples from each country), standard reference moss materials (M2 and M3) results ensured the study. ANOVA showed no differences between measured results in both laboratories at the 99% confidence level. Principle Component Analyze proved two factors: F1 group of Al, As, Cd, Cr, Fe, Ni, and V and F2 of Cu, Pb, and Zn as main atmospheric pollutants. Results obtained showed approximately Cu and Pb high concentrations around Istanbul and Burgas and Zn pollution in Istanbul district. Arsenic cross-border atmospheric pollution in the study area of Southeastern Europe was found.
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    Öğe
    Revitalization of urban ecosystems through vascular plants: preliminary results from the BSEC-PDF project
    (Ist Chimica Agraria, 2011) Gorelova, S. V.; Frontasyeva, M. V.; Yurukova, L.; Coskun, M.; Pantelica, A.; Saitanis, C. J.; Tomasevic, M.
    Passive biomonitoring with plants, in urban environment, is of significant practical value in assessing exposure and human health risks caused by various technogenic pollution impacts. In order to select plant species able to accumulate the anthropogenically emitted heavy metals (HM) and toxic elements in excessive amounts, being tolerant to them, an assessment of the accumulation efficiency of several urban tree species was carried out in six European cities and towns: Sofia (Bulgaria), Athens (Greece), Bucharest (Romania), Tula (Russia), Belgrade (Serbia), and Canakkale (Turkey). The leaves of the selected tree species were collected in summer 2009 and subjected to multi-elements analysis by means of several analytical techniques: ICP-OES, AAS, PIXE, and XRF. The preliminary results of the analysis suggest that the leaves of the species Aesculus hippocastanum, Acer platanoides Populus nigra, and Tilia cordata can be used as accumulators of a number of elements originated from the technogenic pollution: Populus nigra: Mn, Fe, Ni, Zn, Cd, and Pb; Acer platanoides: Mn and Fe; Aesculus hippocastanum: Ni, Cu, As, and Pb; cordata: Al, Fe, and Cu, and Betula pendula: Mn, Ni, Zn, Cd, and Pb.