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The role of Mn and Fe oxides in risk elements retention in soils under different forest types

Author

Listed:
  • Pavel ROTTER

    (Research Centre for Toxic Compounds in the Environment, Masaryk University, Brno, Czech Republic
    Department of Forest Ecology, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic)

  • Jan KUTA

    (Research Centre for Toxic Compounds in the Environment, Masaryk University, Brno, Czech Republic)

  • Radim VÁCHA

    (Research Institute for Soil and Water Conservation, Prague, Czech Republic)

  • Milan SÁŇKA

    (Research Centre for Toxic Compounds in the Environment, Masaryk University, Brno, Czech Republic)

Abstract

Retention of four selected risk elements (SRE) - arsen (As), cadmium (Cd), lead (Pb), zinc (Zn) - by manganese (Mn) and iron (Fe) oxides in different forest soils was investigated. The abundance of oxides and the association between oxides and SRE were observed in 91 soil samples of different forests divided into 5 categories covering the variability of forests in the Czech Republic. The sequential extraction procedure was used for dissolution of Mn and Fe oxide fractions (MnOF and FeOF) separately and together with the associated elements. It was found that Mn associated with MnOF is significantly higher in deciduous forests. These differences were ascribed mainly to the higher pH and lower DOC (dissolved organic carbon) in deciduous forests. The association of SRE with MnOF declines in the order Cd » Pb > Zn > As and the association with FeOF in the order As ≍ Pb » Cd > Zn. Despite their relatively lesser occurrence, MnOFs were found to be very significant for retention of Cd. FeOF is strongly associated with As and Pb. The category of forest has been identified to influence the amount of SRE retained by oxides especially in two cases: (1) the category of forests on Fluvisols differs from the other categories; (2) the retention of Cd by MnOF or FeOF is larger in deciduous forests compared with coniferous forests.

Suggested Citation

  • Pavel ROTTER & Jan KUTA & Radim VÁCHA & Milan SÁŇKA, 2017. "The role of Mn and Fe oxides in risk elements retention in soils under different forest types," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 63(5), pages 213-219.
    • Handle: RePEc:caa:jnlpse:v:63:y:2017:i:5:id:116-2017-pse
    DOI: 10.17221/116/2017-PSE
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    References listed on IDEAS

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    1. A. Vaněk & L. Borůvka & O. Drábek & M. Mihaljevič & M. Komárek, 2005. "Mobility of lead, zinc and cadmium in alluvial soils heavily polluted by smelting industry," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 51(7), pages 316-321.
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