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Title
Heavy metals in Neogene sedimentary rocks as a potential geogenic hazard for sediment, soil, and surface and groundwater contamination (eastern Posavina and the Lopare Basin, Bosnia and Herzegovina)
AuthorGrba, Nenad ; Neubauer, Franz ; Šajnović, Aleksandra ; Stojanović, Ksenija ; Jovančićević, Branimir
Published in
Journal of the Serbian Chemical Society, 2015, Vol. 80, Issue 6, page 827-838
PublishedSerbian Chemical Society, 2015
LanguageEnglish
Document typeJournal Article
Keywords (EN)pollution / river sediments / geo-accumulation index / total enrichment factor / weathering
ISSN1820-7421
URNurn:nbn:at:at-ubs:3-3527 Persistent Identifier (URN)
DOI10.2298/JSC140317047G 
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 The work is publicly available
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Heavy metals in Neogene sedimentary rocks as a potential geogenic hazard for sediment, soil, and surface and groundwater contamination (eastern Posavina and the Lopare Basin, Bosnia and Herzegovina) [0.15 mb]
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Abstract (English)

The influence of geochemical processes (weathering, erosion and dilution) of Internal Dinarides to the Posavina Neogene Basin and their implication to the pollution of Sava River sediments of four sampling sites in the Eastern Posavina (Županja, Brčko, Bosanska Rača and Sremska Mitrovica) was studied. For this purpose, comparison of contents of heavy metals (Pb, Zn, Cu, Ni, Cr, Cd, As, Hg) of the Eastern Posavina sediments with local background values was performed. Sediments from two boreholes of the Lopare Basin considered as non-polluted and representative for specific geologic and hydrogeologic system were used for calculation of local background values. The aim was to assess whether observed heavy metals concentrations of four sampling sites along the Sava River represent background/natural or anthropogenic contamination. This task is performed using the geo-accumulation index and total enrichment factor. According to values of the total enrichment factor (0.25 - 0.71), the anthropogenic impact on the investigated area is quite low. The heavy metals contents in river sediments, soil and groundwater are mainly controlled by geochemical processes, particularly weathering (Chemical Proxy of Alteration value 60). The results also offer novel insights into the elevated geogenic levels of Cr and Ni in the Eastern Posavina region.

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