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Cadmium distribution coefficeints and Cd transport in structured soils

Author

Listed:
  • Ľ. Lichner

    (Institute of Hydrology, Slovak Academy of Sciences, Bratislava, Slovak Republic)

  • A. Čipáková

    (Institute of Hydrology, Slovak Academy of Sciences, Bratislava, Slovak Republic)

Abstract

In the case of cadmium transport via soil macropores, the short-term duration of an interaction between the reactive solute in aqueous phase and soil, as well as cadmium precipitation or adsorption on particles < 10-5 m should be taken into account. Two distribution coefficients are proposed for predicting the cadmium transport in a structured soil: the matrix distribution coefficient Kdm, equal to the equilibrium distribution coefficient Kdeq and estimated using the conventional batch technique, and the macropore distribution coefficient KdM, estimated using the modified batch technique. It was found that the conventional approach (using the coefficient Kdeq only) would underestimate a penetration of the part of Cd transported in the macropores about 255-times in the loamy-sand soil in Kalinkovo, 20-times in the loam soil in Macov, and 122-times in the clay soil in Jurová in comparison with the approach proposed in this study.

Suggested Citation

  • Ľ. Lichner & A. Čipáková, 2002. "Cadmium distribution coefficeints and Cd transport in structured soils," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 48(3), pages 96-100.
  • Handle: RePEc:caa:jnlpse:v:48:y:2002:i:3:id:4206-pse
    DOI: 10.17221/4206-PSE
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