Nafise Panahi; amirhossein hamidian; Ali Tavili
Abstract
This study was conducted in Halgheh Darreh waste disposal site in Karaj in order to determine theconcentration of Ni and Pb in Halimocnemis pilifera and in region’s soil. Three 50*50 m plots inthe direction of the prevailing wind were selected. The First plot was close to the leachate pondsand ...
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This study was conducted in Halgheh Darreh waste disposal site in Karaj in order to determine theconcentration of Ni and Pb in Halimocnemis pilifera and in region’s soil. Three 50*50 m plots inthe direction of the prevailing wind were selected. The First plot was close to the leachate pondsand the next two plots were located at 500 and 1000 m from the first plot, respectively. Ten randomsamples from root and shoot of the plant and also from the soil were collected. The concentrationsof the metals were determined using a flame atomic absorption spectormetery (AA 240 (FS) VarianCompany, USA) after dry acid digestion. Two-way and one-way ANOVA were used to assess thedifferences of metal concentrations in roots and shoots of the plants, and in the soil of the plots,respectively. Duncan Test was applied to compare the average concentrations of metals in differentplots. The results revealed that the soil of the different plots do not have a significant difference inNi and Pb concentrations. No significant difference was observed between the metal concentrationsin roots and shoots of the plants. The plants in the second and third plots showed to have the highestconcentration of Pb (3.27 mg kg-1) and Ni (4.41 mg kg-1), respectively. Bioconcentration andtransmission factors for Ni and Pb (TF=1.21; 0.75 and BCF=1.11; 0.29, respectively) suggested thatH.pilifera is an appropriate plant to remove Pb and Ni from soil.