Naslov
Trace element fractionation in soils and stream sediments in the Istrian-littoral river basin, Croatia

Autori
Hasan, Ozren ; Miko, Slobodan ; Šparica Miko, Martina ; Mesić, Saša ; Crnojević, Helena ; Marković, Tamara ; Ilijanić, Nikolina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
"Environmental Quality and Human Health" (SEGH2010) : abstracts / Zhang, Chaosheng - Galway, 2010, 60-60

Skup
Environmental Quality and Human Health

Mjesto i datum
Gaillimh, Irska, 27.07.2010. - 02.08.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
soil; stream sediments; trace elemnts; istria; karst

Sažetak
The study focuses on application of GIS to study of the relationships between land uses, geomorphology, erosion, water quality, and leaching experiments of topsoils, subsoils, stream sediments and suspended mater in the streams. Forest and agricultural topsoil (0-5 cm) and subsoil (40-50 cm), as well as steam sediments from 59 subcatchments of the Dragonja, Mirna and Raša rivers, were investigated, to determine the influence of different soil environments as sources metal species bound to sediments discharged into the mainstreams of the rivers flowing into the northern Adriatic. Leaching experiments have been performed on soil and sediment samples in order to recover water soluble and adsorbed trace elements or those fixed in acid soluble mineral phases such as Fe-Mn oxyhydroxides. Generally high concentrations of heavy metals such as Cr, Ni, Zn, Co, V and Mn are found in the Mediterranean cambisols and luvisols of the Croatian coastal region, which are a consequence of the specific conditions of their formation. The HAc extractable Cu, Pb, Zn, Mn, As, Tl, Ni, was highest in stream sediments compared to topsoil and subsoil. The HAc extracted contents of Co, Cd, and Ba found to be the same soils and corresponding sediments. The results indicate that metal contents and extracted metal pools of stream sediments is closely associated with both the proportions of soil type, land use and the amount of runoff from agricultural, and forest areas in the catchments.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA