Evaluation of heavy metals accumulation by two eme

Authors: N Shabani M H Sayadi

Publish Date: 2012/01/03

Volume: 32, Issue: 1, Pages: 91-98

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Abstract

The concentrations of copper Cu and lead Pb in and the biomass of the different parts of Persicaria glabra Willd Gamez and Juncellus alopecuroides Rottb CBCl were evaluated while grown in pots under laboratory conditions Cu and Pb were added as sulphates 50 100 200 400 mg/kg to the pots Heavy metal concentrations in the plants were measured by atomic absorption spectrometry Results reveal that the biomass of J alopecuroides particularly roots was higher than P glabra and that the growth tendency of macrophytes decreased with increasing heavy metal concentration in the soil while in P glabra biomass went on increasing with the increase in copper concentration Heavy metal accumulation in the roots was more than in aerial parts and therefore barring two exceptions the transfer factor of heavy metals from roots to aerial parts showed as less than 1 suggesting less transfer of heavy metals from roots to aerial parts Thus these macrophytes are efficient accumulators of trace elements particularly J alopecuroides which can be recommended for biofiltration of heavy metals from contaminated soils

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