Content of Pb, Ni, Cr, Cd and Co in peppermint (Mentha piperita) cultivated on different soil types from Serbia
2001
Radanovic, D. | Maksimovic, S. (Institute for Medicinal Plant Research, Belgrade (Yugoslavia)) | Antic-Mladenovic, S. | Jakovlevic, M.
Content of potentially toxic heavy metals (Pb, Ni, Cr, Cd and Co) in peppermint herb (Mentha piperita) cultivated on seven soil types from Serbia in both field and vegetation trials is presented. Heavy metals in peppermint are within their normal content in a plant material. Exception of that is found only on Vertisols, where contamination of soil and plants by an anthropogenic input (feronickel smelter) occurs. In general, contents of Pb and Cr were higher in field conditions, contents of Cd and Ni were higher in the peppermint grown in pots, while Co contents were mainly equal. Amounts of Pb content in peppermint varied more in the field conditions in comparison with that from pot trial. The same was obtained for Cr. Content of Ni in peppermint varied more in field condition, with the exception of the sample with very high Ni concentration (19.2 ppm), which originate from anthropogenic contamination of leaves. Concentration of Cd in peppermint was significantly lower in the field conditions in comparison with pot trial. Content of Co in peppermint was equal in both types of trial. Available amounts of the listed heavy metals in the investigated soils did not have a significant correlation with their contents in peppermint (except for Cd). Significant correlation coefficients were obtained only for Ni and Cd content in peppermint and soil pH value. This is understood, since the investigated soils have quite different chemical properties, where a metal uptake is being under simultaneous influence of numerous different factors (available content, pH, CEC, humus, etc.).
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