Author(s):
1. Dijana Mihajlović, University of Banja Luka, Faculty of Architecture, Civil Engineering and Geodesy, Bosnia and Herzego, Republic of Srpska, Bosnia and Herzegovina
2. Svetlana Antić-Mladenović, Univerzitet u Beogradu - Poljoprivredni fakultet, Serbia
3. Dragoja Radanović, Institut za proučavanje lekovitog bilja , Serbia

Abstract:
This paper presents an assessment of the copper availability in soil by different single extractions: DTPA (0,005 mol/L), CaCl2 (0,1 mol/L) and NH4NO3 (1 mol/L, DIN procedure). The research was carried out on the 48 samples of the arable soils taken in the northwestern part of the Republic of Srpska. Total Cu contents were also determined in the soil samples after the acid digestion (HNO3+H2O2). Copper contents in the extracts were determined by the atomic absorption spectrophotometry. Total soil Cu ranged from 7,7-42,9 mg/kg which corresponded to Cu-unpolluted soils. Low level of Cu mobility and availability was found in the investigated soils. In the average DTPA extracted 10,87%, CaCl2 0,31% and NH4NO3 0,44% of the total soil Cu. High statistically significant correlation (r=0,84) between the Cu contents extracted with DTPA and NH4NO3 was found, what implies that maximum allowed level of this element in the soil for the DTPA extraction procedure might be established. That conclusion have to be verified in future research including soils with high total copper content.

Key words:
heavy metals,soil,extraction,pollution

Thematic field:
SYMPOSIUM C - Water

Date of abstract submission:
04.06.2018.

Conference:
Contemporary Materials 2018 - Savremeni Materijali

Applied paper from author Abstract