Journal
ENVIRONMENTAL MONITORING AND ASSESSMENT
Volume 189, Issue 11, Pages -Publisher
SPRINGER
DOI: 10.1007/s10661-017-6306-7
Keywords
Forest soils; Hazardous elements; Nacetin; Contamination; Mobility; BCR sequential extraction
Categories
Funding
- Czech Science Foundation [13-17501S]
- Operational Programme Prague-Competitiveness [CZ.2.16/3.1.00/21516]
- Grant Agency of the Charles University in Prague [338811]
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Early efforts at remediation of contaminated soils involve overturn or removal of the uppermost soil horizons. We find that such disruption is counterproductive, as it actually increases the mobility of the heavy metals involved. In our study, we sought to replicate in a controlled manner this commonly used remediation strategy and measure Pb, Zn, Cu and As concentrations in all soil horizons-both prior to and 1 year after disruption by trenching. BCR analyses (sequential leaching) indicate that Pb is affected to the greatest degree and is most highly mobile; however, Zn and As remain insoluble, thus partially ameliorating the detrimental effect. Differences in vegetation cover (i.e. spruce vs. beech forest) have little influence on overall element mobility patterns. The Krusne hory (Ore Mts., Czech Republic) study area is one of the more heavily contaminated areas in Central Europe, and thus the results reported here are applicable to areas affected by brown-coal-burning power plants.
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