prvi kongres hrvatskih znanstvenika iz domovine i inozemstva - HATZ

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PRVI KONGRES HRVATSKIH ZNANSTVENIKA IZ DOMOVINE I INOZEMSTVAZagreb - Vukovar, 15. - 19. studenog 2004.anhtropogenic influence could be observed with highest concentrations of trace elementsin sediments of Sava Dolinka in Camp Šobec. It is situated about 10 km downstreamfrom iron industry in Jesenice. Mineralogical composition changes due to tributaries andat the lower part of investigated area is quartz predominating. A principle componentanalysis (PCA) was performed on multivariate data in order to extract the main elementalassociations, which control the multivariate signature of database. Further research willbe extended on influence of Savinja, Krka and Kupa tributaries, where anthropogenicinfluence is assumed and where Mössbauer spectroscopy could also be applied.ACKNOWLEDGEMENTS Research was funded by the Ministry of Science andTechnology of Croatia, project 0098041, bilateral project Slovenia-Croatia (2000-2002)and JF-169, USA-Croatia. REFERENCES: FRANČIŠKOVIĆ-BILINSKI, S. ; BILINSKI, H. ;TIBLJAŠ, D. ; HANŽEL, D. & MERTELJ, A. (2002): Characterization of sediments fromVoglajna and Savinja rivers - preliminary results. Geologija 25/2, 367-372. ŠTERN, J. &FÖRSTNER, U. (1976): Heavy metals distribution in the sediment of the Sava Basin inSlovenia. Geologija 19, 259-274.Presented on:First Conference on Applied Environmental Geology (AEG'03) in Central and EasternEuropeVienna, Austria, 07-10.10.2003.Principal Investigator : Dr.sc. Halka BilinskiProject No. 009804136
PRVI KONGRES HRVATSKIH ZNANSTVENIKA IZ DOMOVINE I INOZEMSTVAZagreb - Vukovar, 15. - 19. studenog 2004.P - 34CHARACTERIZATION OF SEDIMENTS FROM VOGLAJNA ANDSAVINJA RIVERSFrančišković-Bilinski, Stanislav; Bilinski, Halka; Tibljaš, Darko; Hanžel, Darko;Mertelj, AlenkaRuñer Bošković Institute, Zagreb, CroatiaPreliminary studies of surface sediments (f < 63 ľm) from Voglajna and Savinja rivers arereported and discussed. XRD data showed that river sediments predominantly consist ofquartz. Muscovite was found in all samples as minor mineral. Feldspars were detected insediments of Voglajna. Calcite was found in Voglajna near Šentjur and Štore. Calcite anddolomite were found in sediments of Savinja. From about 50 elements determined byICP-MS method, concentration of iron predominates (2.8-5.6%). It is highest in Voglajnaat Štore. From microelements the highest concentrations of Cr, Ni, Cu, Mo, Sb, W and Pbwere found in the same sediment. Concentration of Al and K are similar in all samples.Ca and Mg are higher in Savinja, than in Voglajna. Zn, Cd, Ag and Au show the highestconcentrations in sediments of Savinja at Tremerje, below Celje. Most of trace elementsare in good correlation with iron. Iron minerals could not be well determined by XRD.Further characterization of iron in sediments was performed by 57Fe Mössbauerspectroscopy at room temperature. Spectra were fitted with two doublets showingrelatively similar isomer shifts and quadrupole parameters. The ratio Fe(III)/Fe(II)decreases downstream Voglajna river. In addition to the presence of two doublets, twomagnetic sextets are present in the sediment of Voglajna at Štore, suggesting thepresence of Fe3O4 in minor quantity. The work is in progress to determine ironcontaining minerals in these rivers.Presented on:1. slovenski geološki kongresČrna na Koroškem, Slovenija, 09-11.10.2002.Principal Investigator : Dr.sc. Halka BilinskiProject No. 009804137
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prvi kongres hrvatskih znanstvenika iz domovine i inozemstva - HATZ

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