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Pregled bibliografske jedinice broj: 605289

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Autori: Mikac, Iva; Fiket, Željka; Terzić, Senka; Barešić, Jadranka; Mikac, Nevenka; Ahel, Marijan
Naslov: Chemical indicators of anthropogenic impacts in sediments of the Plitvice Lakes
( Chemical indicators of anthropogenic impacts in sediments of the Plitvice Lakes )
Izvornik: Case Study I: Monitoring of Water and Lake Sediment Quality in Natural Environment - Programme and Abstracts / Krajcar Bronić, Ines ; Obelić. Bogomil (ur.). - Zagreb :
Skup: Network in solid waste and water treatment between Europe and Mediterranean countries: Case Study I - Monitoring of Water and Lake Sediment Quality in Natural Environment
Mjesto i datum: Plitvička jezera, Hrvatska, 29.05.-1.06. 2011.
Ključne riječi: lake sediments; karst sediments; Plitvice lakes; trace metals; hydrocarbons; surfactants
( lake sediments; karst sediments; Plitvice lakes; trace metals; hydrocarbons; surfactants )
Sažetak:
The anthropogenic impact on the Plitvice Lakes was investigated using a combination of inorganic and organic constituents, including major elements (Al, K, Fe), trace metals (Li, Ag, Cd, Sn, Pb, Bi, Cr, Co, Ni, Cu, Zn and Sb), polycyclic aromatic hydrocarbons (PAHs) and anionic surfactants of linear alkylbenzene sulfonate (LAS) type. Dated cores of recent sediments from the two largest lakes, Lake Prošće and Lake Kozjak, were analysed for the selected contaminants using highly specific methods, including inductively coupled plasma mass spectrometry (ICP/MS), gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/tandem mass spectrometry (LC/MS/MS). The distribution of inorganic constituents reflected primarily the geological background of the area. The concentration of all elements was significantly higher in the Lake Prošće, which was due to the comparatively higher terrigenous input into that lake. The concentration of toxic metals was relatively low in both lakes, except for Cd (>1 mg kg-1) and Pb (up to 40 mg kg-1). The vertical profiles of these metals suggested that elevated concentrations of Cd were of natural origin, while Pb was predominately of recent anthropogenic origin. A similar distribution pattern like for Pb was observed for pyrolytic polycyclic aromatic hydrocarbons (PAHs), suggesting the same prevailing mechanism of input. The characteristic diagnostic PAH ratios revealed that higher PAHs prevailingly originated from the combustion of biomass and fossil fuels. LAS were found in rather high concentrations in the recent sediment layers (up to 4.7 mg kg-1), suggesting that contaminated household and hotel wastewaters reach the Lakes, very probably by leaking through the porous karst rocks. 14
Vrsta sudjelovanja: Predavanje
Vrsta prezentacije u zborniku: Sažetak
Vrsta recenzije: Nema recenziju
Projekt / tema: 098-0982709-2741, 098-0982934-2715, 098-0982934-2712
Izvorni jezik: eng
Kategorija: Znanstveni
Znanstvena područja:
Geologija,Kemija
Upisao u CROSBI: jbaresic@irb.hr (jbaresic@irb.hr), 27. Stu. 2012. u 15:57 sati



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