Izotopske in geokemične značilnosti recentnega sedimenta iz severnega dela Morinjskega zaliva : diplomsko delo
Lampret, Teodora
The sediment from the Morinje Bay represents an important source of healing mud, named peloid, that could according to its organoleptic properties, be used for medical tretment. The aim of our ...investigations was to determine geochemical and isotopic characteristic of the surfical sediments with use of multielement and isotopic analyses. We tried to estimate the degree of heavy metal pollution and eventual presence of antropogenic organic contaminats that may originate from city dump of Šibenik. The dump is located in the N costal part of the Bay and it has been the dumping side for large amount of wastes for many years. The origin of sedimentary organic matter in the surfical sediment was determined with use of stable isotopic composition of organic carbon (delta 13C 1/1000) and mixing model. The results shows that aquatic vegetation has a great influance on the sedimentary organic carbon isotope composition. The mineralogical composition of sediment and distribution of major elemnts suggest that sediment originates from sil erosion. Use of aluminium to normalize heavy metals shows that surfical sediment is relatively unpolluted. The exception represent following elemnts: Pb, Zn, Cu, Sn, Mn, P, Mo and Ba. They most likely originate from city dump Šibenik and agriculture activity. The results of isotopic composition of organic delta 13C 1/1000 and delta 15N 1/1000 shows no impact of antropogenic organic pollutants. The organic pollutants. The organic contamination in the sediment could be present but masked by isotopic composition of other components. The isotopic composition of delta 18O 1/1000 (VPDB) in the skalet of molluscs shows no influence of fresh water in the research area.
Vrsta gradiva - diplomsko delo
; neleposlovje za odrasle
Založništvo in izdelava - Ljubljana : [T. Lampret], 2001
Geologija M LAMPRET Teodora Izotopske IN: 000013069
prosto - na dom, čas izposoje: 14 dni
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