Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/1540
Title: Zn in the soil solution of unpolluted and polluted soils as affected by soil characteristics
Authors: MEERS, Erik 
Unamuno, VR
Du Laing, G.
VANGRONSVELD, Jaco 
Vanbroekhoven, K.
Samson, R.
Diels, L.
GEEBELEN, Wouter 
RUTTENS, Ann 
Vandegehuchte, M.
Tack, FMG
Issue Date: 2006
Publisher: Elsevier
Source: GEODERMA, 136(1-2). p. 107-119
Abstract: Current legislative frameworks for soil pollution focus predominantly on total metal content. However, environmental risks posed by heavy metals are not only function of their overall presence in the soil, but also of their chemical speciation. Soil solution levels of Zn are indicative of its availability to plants and soil (micro)biota. In addition, levels present in the soil solution can tell us something of the potential risks for leaching and subsequently elevating ground water levels. In this research, a total of 29 polluted and unpolluted soils were characterised and assessed for the presence of Zn in the soil solution using Rhizon soil moisture samplers. Interactions between the soil properties and observed solubility of Zn was described and put into empirical multivariate formulations. All obtained equations without exception contained pH as a key factor in determining Zn solubility. Finally, soil solution speciation of Zn was assessed using 2 independent software packages (Visual Minteq 2.23 and WHAM VI), based on pH and the presence of other metals, exchangeable bases, anions, and dissolved organic matter. Both models were largely in disagreement in the fractionation between organically bound and inorganic Zn in the solution. Further investigation into the parametric background of both models will therefore be required to ascertain the cause and nature of the observed discrepancy.
Keywords: Zinc; Soil solution; Mobility; Heavy metals
Document URI: http://hdl.handle.net/1942/1540
ISSN: 0016-7061
e-ISSN: 1872-6259
DOI: 10.1016/j.geoderma.2006.03.031
ISI #: 000242837500010
Category: A1
Type: Journal Contribution
Validations: ecoom 2008
Appears in Collections:Research publications

Show full item record

SCOPUSTM   
Citations

50
checked on Sep 2, 2020

WEB OF SCIENCETM
Citations

39
checked on May 21, 2022

Page view(s)

42
checked on May 27, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.