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Mercury distribution and mobility in contaminated soils from vicinity of waste incineration plant

Author

Listed:
  • A. Šípková

    (Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • J. Száková

    (Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • P. Coufalík

    (Department of Chemistry, Faculty of Science, Masaryk University, Brno, Czech Republic)

  • O. Zvěřina

    (Department of Chemistry, Faculty of Science, Masaryk University, Brno, Czech Republic)

  • L. Kacálková

    (Department of Biology, Faculty of Science, University of Hradec Králové, Hradec Králové, Czech Republic)

  • P. Tlustoš

    (Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

Abstract

The potential bioavailability of Hg from soil might be estimated by a variety of chemical extraction procedures, differing in the extraction agent, its concentration, the sample weight, and the time of extraction. In this study, a comparative analysis of several extraction methods, commonly used for obtaining the mobile and potentially mobilizable phase of the mercury was carried out. Concentrated HNO3, 0.01 mol/L Na2S2O3, 0.05 mol/L EDTA and 0.11 mol/L CH3COOH were used as the single extraction agents. Moreover, the sequential extraction was performed. This procedure involved the following fractions: water soluble Hg, Hg extracted in acidic conditions, Hg bound to humic substances, elemental Hg and mercury bound to complexes, and residual Hg. The results showed that even strong acid HNO3 is unable to release the mercury tightly bound to the soil matrix. This particular method with microwave digestion is commonly used for the estimation of anthropogenic pollution. Conversely, the lowest mercury yield was obtained using the acetic acid as the single extraction agent. In this case, the concentrations were below 0.15% of the total Hg content, which is a proportion generally defined as bioavailable to plants.

Suggested Citation

  • A. Šípková & J. Száková & P. Coufalík & O. Zvěřina & L. Kacálková & P. Tlustoš, 2014. "Mercury distribution and mobility in contaminated soils from vicinity of waste incineration plant," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 60(2), pages 87-92.
    • Handle: RePEc:caa:jnlpse:v:60:y:2014:i:2:id:634-2013-pse
    DOI: 10.17221/634/2013-PSE
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    References listed on IDEAS

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    1. L. Kacálková & P. Tlustoš & J. Száková, 2009. "Phytoextraction of cadmium, copper, zinc and mercury by selected plants," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 55(7), pages 295-304.
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