Radionuklidi, metali i arsen u sedimentima Kaštelanskog zaljeva

Lovrenčić Mikelić, Ivanka (2011) Radionuklidi, metali i arsen u sedimentima Kaštelanskog zaljeva. Doctoral thesis, Faculty of Science > Department of Geology.

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Abstract

Almost all radionuclides and metals as well as arsenic and organic matter mostly accumulate in a deeper, central part and in the east most part of the Bay. The existence of a few so called hot spots was established. Three hot spots for copper, zinc and/or lead were established in the east part of the Bay and one for arsenic and manganese in the west part. Station K90 next to the ”Adriavinil” factory is the most important hot spot for 226Ra and 238U. The greatest pollution with copper, zinc and lead was found in sediments from the east part of the Bay where the pollution spreads to the rest of the Bay from. The maximum geoaccumulation index of copper points to a very polluted sediment and of zinc and lead to an extremely polluted sediment. Mineral composition of the Bay sediment is uniform and calcite and quartz predominate. Granulometric composition depends on the sedimentation depth. Clayey silt/mud is sedimented in deeper parts of the Bay and silty sand/gravely-muddy sand in shallower parts. Recent terrigenous material sediments in the Bay, but in some shallower parts probably erosion predominates. Longterm effect in the Bay is the sediment rate increase due to the anthropogenic influence.

Item Type: Thesis (Doctoral thesis)
Keywords: radionuclides, metals, arsenic, EDXRF, gamma-spectrometry, sedimentation, Kaštela Bay
Supervisor: Barišić, Delko
Date: 2011
Number of Pages: 375
Subjects: NATURAL SCIENCES > Geology
Divisions: Faculty of Science > Department of Geology
Depositing User: Danica Vujičić
Date Deposited: 23 Jan 2014 10:16
Last Modified: 28 Jan 2014 12:30
URI: http://digre.pmf.unizg.hr/id/eprint/236

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