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COPPER PHYTOEXTRACTION AND PHYTOSTABILIZATION POTENTIAL OF WILD PLANT SPECIES GROWING IN THE MINE POLLUTED AREAS OF ARMENIA
Ghazaryan, K.A., H.S. Movsesyan, H.E. Khachatryan, N.P. Ghazaryan, T.M. Minkina, et al.
Geochemistry: Exploration, Environment, Analysis 19(2):155-163(2018)

The phytoremediation potential of 16 native wild plant species growing in Cu-contaminated soils of a mining region in Armenia was evaluated in this study. In roots of dominant plant species, Cu concentrations varied between 55 mg/kg (Hypericum perforatum) and 775 mg/kg (Thymus kotschyanus), and in shoots of plants in the range from 33 mg/kg (Teucrium orientale) and 243 mg/kg (Phleum pratense). The high contents of soil organic matter and clay in the soil facilitated the decrease of the ratio Cubioavailable/Cutotal and, as a result, the decrease of Cu accumulation capability of plants. . Thymus kotschyanus, Phleum pratense and Achillea millefolium had the highest phytostabilization potential of all the studied species due to high bioconcentration factors of their roots and low translocation factors registered in these plants.



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