Professional paper
THE ORIGIN OF ARSENIC IN SOILS AND GROUNDWATER OF THE PANNONIAN PART OF CROATIA
Ivica Kisić
orcid.org/0000-0003-4363-3150
; University of Zagreb Faculty of Agriculture, Zagreb, Croatia
Jasna Nemčić-Jurec
; Public Health Institute of Koprivnica-Križevci county, Koprivnica, Croatia
Ferdo Bašić
; Croatian Academy of Sciences and Arts, Zagreb, Croatia
Željka Zgorelec
orcid.org/0000-0002-5535-7950
; University of Zagreb Faculty of Agriculture, Zagreb, Croatia
Abstract
Arsenic content in surface layer (0-25 cm) varies from 0.9 mg/kg soil to almost implausible 490 mg/kg. The reason for the highest
content in hydromorphic soils should probably be sought in recent history. It is less probable that the reason for the increased
arsenic content in hydromorphic soils is the geological origin of rocks in river valleys. It is more probable that the reason for the
increased arsenic content is river flooding and changes in river flows in the recent past. Based on 208 groundwater samples from
12 locations of Koprivnica-križevci county during 2009-2012, the range of arsenic concentration from <0.1 μg/l to 25.4 μg/l was
determined. The concentrations are, generally, very low (<0.1-6.9 μg/l) on the most of locations. The values in Vratno and
Kolarec locations indicate an increase in arsenic concentration above the permitted values. Groundwater that is rich with arsenic is
result of the natural mineral weathering of rocks.
Keywords
origin of arsenic; soil; groundwater
Hrčak ID:
193256
URI
Publication date:
22.1.2018.
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