The comparisons between Picea abies and Pinus sylvestris in respect of lead phytoremediation potential

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Research Paper 01/02/2013
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The comparisons between Picea abies and Pinus sylvestris in respect of lead phytoremediation potential

Seyyedeh Mahdokht Maddah, Farhang Moraghebi
Int. J. Biosci.3( 2), 35-41, February 2013.
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Nowadays, heavy metal`s pollution has made some environmental problems in the biosphere. The technique of phytoremediation is using the plants in removing these environmental pollutants .In this study, Forty five three-year old seedlings of Pinus sylvestris L and Picea abies (L.) Karst were planted in plastic pots that there were put in open area. For each species, fifteen pots were treated with three lead concentrations 0 (control), 800, and 1600 mg Kg-1. At the end of October the amounts of Pb in roots, stems, leaves and soil were measured using ICP. Random data in 15 repetitions were analyzed using one-way analysis of variance. The results indicated that unlike Picea abies, P. sylvestris was suitable as a lead phytoremediation plant. In 800 mg kg-1 the Pb accumulation in both parts of P. sylvestris roots and stems while in high concentration 1600 mg kg-1, maximum Pb accumulation was observed in roots and leaves. In the species Picea abies we didn’t observe any significant differences in Pb absorption between treatment and control up to 800 ppm, while in 1600 ppm Pb concentration was transported to stems and leaves. Comparison between the remaining Pb in different treatment levels of each horizontal layer of soil in P.sylvestris seedlings showed there was a significant difference only in first layer of soil. In P.abies there were significantly differences in horizons first and third. In conclusion, Pinus sylvestris is more suitable for Pb phytoremediation than Picea abies.


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