NDLI: Assessment of vertical contamination of Cd, Pb and Zn in soils around a former ore smelter in Wallonia, Belgium

Content Provider	Springer Nature Link
Author	Liénard, Amandine Colinet, Gilles
Copyright Year	2016
Abstract	Concentrations of trace elements (Cd, Co, Cr, Cu, Ni, Pb and Zn) and major elements (Ca, Mg, K, Fe, Al and Mn) as well as pH$_{KCl}$ and total organic carbon (TOC) were measured on 22 profiles located in a 3 km radius of a former ore treatment plant in Wallonia (Belgium). The enrichment factor (EF), vertical impoverishment factor (VIF) and availability ratio (AR) were used as diagnostic tools of contamination and migration of Cd, Pb and Zn in profiles. The data revealed that the soil profiles are significantly contaminated. The ranges of EFs for Cd (17–3570), Pb (1–2883) and Zn (2–309) are very broad with the higher EF in the topsoil of the profiles. VIFs of subhorizons are rarely above 1. In the few cases with VIF > 1, the main factor explaining is the soil type (in particular, Colluvic Regosols, Luvisols and Cambisols with shale load). Cd, Pb and Zn ARs are strongly correlated with TOC and to a lesser extent with pH$_{KCl}$; Pb and Zn ARs are influenced by soil type, while land use only has an effect on Zn AR. The Cd availability is independent of these two factors. The contents of trace elements measured in soil profiles are very high, especially in topsoil. At present, the Cd, Pb and Zn vertical distribution shows a low migration from topsoil to deeper levels. However, we must not discount the hazard of a future potential transfer.
Starting Page	1
Ending Page	15
Page Count	15
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	75
Issue Number	19
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-10-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Enrichment factor Vertical impoverishment factor Soil Trace elements Vertical distribution Availability ratio Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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