Exchangeable fraction of elements in alluvial sediments under waste disposal site (Zagreb, Croatia) (CROSBI ID 79038)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Vertačnik, Astrea ; Barišić, Delko ; Musani, Ljerka ; Prohić, Esad ; Juračić, Mladen
engleski
Exchangeable fraction of elements in alluvial sediments under waste disposal site (Zagreb, Croatia)
Concentrations of Ag, Ba, Cd, Ce, Cs, Co, Cr, Eu, Fe, Rb, Sc, Sr, Th, and Zn exchangeable fractions were determined in alluvial sediments at waste disposal site area in the vicinity of water-well field. Samples have been leached with 0.5 M NH4Cl at a sample/solution ratio of 1:20 during 24 hours without shaking. INAA of dry NH4Cl residues show that concentrations of exchangeable elements determined in the most of sediments below wastes have natural levels. Ag, Ba and Sr are readily exchangeable ; Rb, Cs and Zn have lower exchangeability, while Cd, Ce, Th, Sc, Eu, Cr, Fe and Co are rather immobile. Extremely high total and exchangeable silver concentration was found at 6.5-6.8 meters below waste in the aerated layer occasionally under the water table. Exchangeable concentrations in deeper water-bearing sediment layers are not elevated. Due to this, one can presume that upper sediment layers act as chemical filter generally preventing the infiltration from overlying wastes into water-bearing layers.
alluvial sediment; exchangeable elements; waste disposal site; Ag; 0.5 M NH4Cl leaching; INAA
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
218 (1)
1997.
45-52
objavljeno
0236-5731
10.1007/BF02033972